Alert archive / Wyoming / Blizzard Warnings in 2022

Blizzard Warning 2, NWS Riverton, WY

December 12, 2022Johnson County, Wyoming

NWS Riverton, WY issued this blizzard warning at Dec 12, 2022, 9:21 AM MST for Johnson County, Wyoming. It took effect at Dec 12, 2022, 5:00 PM MST. It was in force for 33 hr. 8 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Dec 12, 2022, 9:21 AM MST (16:21 UTC)
In effect from
Dec 12, 2022, 5:00 PM MST
Expired
Dec 14, 2022, 1:30 AM MST
In force
33 hr
Issued by
NWS Riverton, WY

County Johnson County, WY

The radar

The Riverton/Lander radar (KRIW), 187 km from the middle of the area, began a volume at 16:22 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
Dec 13, 11:01 AM MSTSNOW 413 Sse Buffalo, WYMULTIDAY TOTAL.
Dec 13, 11:01 AM MSTSNOW 414 Wnw Mayoworth, WYMULTIDAY TOTAL.
Dec 13, 11:01 AM MSTSNOW 45 Ssw Buffalo, WYMULTIDAY TOTAL.
Dec 13, 11:01 AM MSTSNOW 6Buffalo, WYMULTIDAY TOTAL.
Dec 13, 11:01 AM MSTSNOW 1015 Wsw Buffalo, WYMULTIDAY TOTAL.
Dec 13, 11:01 AM MSTSNOW 1016 W Buffalo, WYMULTIDAY TOTAL.
Dec 13, 11:01 AM MSTSNOW 1027 Wnw Buffalo, WYMULTIDAY TOTAL.
Dec 13, 11:01 AM MSTSNOW 1318 Wnw Buffalo, WYMULTIDAY TOTAL.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Riverton, WY (KRIW), launched 12:00Z, 4.4 hours before the alert went out and 182 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Riverton, WY at 12:00Z on 2022-12-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Riverton, WY at 12:00Z on 2022-12-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 91 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
3328 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
91 m²/s²
0-3 km storm-relative helicity
134 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

002 
WWUS45 KRIW 121621
WSWRIW

URGENT - WINTER WEATHER MESSAGE
National Weather Service Riverton WY
921 AM MST Mon Dec 12 2022

WYZ010-130030-
/O.UPG.KRIW.WS.W.0014.221213T0000Z-221215T0000Z/
/O.NEW.KRIW.BZ.W.0002.221213T0000Z-221215T0000Z/
Northeast Johnson County-
Including the city of Buffalo
921 AM MST Mon Dec 12 2022

...BLIZZARD WARNING IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 PM
MST WEDNESDAY...

* WHAT...Blizzard conditions expected. Total snow accumulations of
  8 to 12 inches. Winds gusting as high as 50 mph.

* WHERE...Northern Johnson County.

* WHEN...From 5 PM this afternoon to 5 PM MST Wednesday.

* IMPACTS...Travel could be very difficult to impossible at times.
  Blowing snow could significantly reduce visibility, including on
  Interstate 25 and Interstate 90. Whiteout conditions are likely
  at times. Road closures are likely.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, have a winter survival kit with you. If you 
get stranded, stay with your vehicle. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ020-022-130030-
/O.CON.KRIW.WS.W.0014.221213T0000Z-221215T0000Z/
Natrona County Lower Elevations-Casper Mountain-
Including the city of Casper
921 AM MST Mon Dec 12 2022

...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 5 PM MST WEDNESDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 6 to 
  12 inches in the lower elevations, with 15 to 20 inches on 
  Casper Mountain. Casper Mountain could see locally up to 2 
  feet of snow. Winds gusting as high as 35 mph tonight.

* WHERE...Natrona County Lower Elevations and Casper Mountain.

* WHEN...From 5 PM this afternoon to 5 PM Wednesday.

* IMPACTS...Travel could be very difficult to nearly impossible at
  times in rural areas, and any roads on Casper Mountain. Road
  closures are likely.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ011-130030-
/O.CON.KRIW.WS.W.0014.221213T0000Z-221215T0000Z/
Southeast Johnson County-
Including the city of Kaycee
921 AM MST Mon Dec 12 2022

...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 5 PM MST WEDNESDAY...

* WHAT...Heavy snow with significant blowing and drifting snow
  expected. Total snow accumulations of 6 to 12 inches. Winds
  gusting as high as 30 mph, with gusts up to 50 mph over eastern
  portions of the county.

* WHERE...Southern Johnson County.

* WHEN...From 5 PM this afternoon to 5 PM Wednesday.

* IMPACTS...Travel could be very difficult to impossible at times.
  Blowing snow could significantly reduce visibility, including on
  Interstate 25. Whiteout conditions are likely at times. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ005-007-130030-
/O.CON.KRIW.WS.W.0014.221212T2200Z-221214T1300Z/
Southwest Big Horn Basin-Owl Creek and Bridger Mountains-
Including the city of Thermopolis
921 AM MST Mon Dec 12 2022

...WINTER STORM WARNING REMAINS IN EFFECT FROM 3 PM THIS
AFTERNOON TO 6 AM MST WEDNESDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 5 to 
  10 inches for lower elevations, and 12 to 18 inches for the 
  mountains. Winds gusting as high as 30 mph.

* WHERE...Southwest Big Horn Basin and Owl Creek and Bridger 
  Mountains.

* WHEN...From 3 PM today to 6 AM Wednesday.

* IMPACTS...Travel could be very difficult. Blowing and drifting
  of snow is possible, which would result in severely reduced
  visibility at times, including through Wind River Canyon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ019-130030-
/O.CON.KRIW.WS.W.0014.221213T0000Z-221214T1300Z/
Green Mountains and Rattlesnake Range-
Including the city of Jeffrey City
921 AM MST Mon Dec 12 2022

...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 6 AM MST WEDNESDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 5 to 
  10 inches. Winds gusting as high as 45 mph.

* WHERE...Green Mountains and Rattlesnake Range.

* WHEN...From 5 PM this afternoon to 6 AM Wednesday.

* IMPACTS...Plan on slippery road and difficult travel conditions.
  Blowing and drifting snow is possible, which would reduce
  visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ030-130030-
/O.CON.KRIW.WS.W.0014.221213T0000Z-221214T1300Z/
East Sweetwater County-
Including the city of Wamsutter
921 AM MST Mon Dec 12 2022

...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 6 AM MST WEDNESDAY...

* WHAT...Periods of snow, heavy at times. Total snow 
  accumulations of 4 to 7 inches. Winds gusting as high as 40 
  mph.

* WHERE...East Sweetwater County.

* WHEN...From 5 PM Monday to 6 AM Wednesday.

* IMPACTS...Travel could be difficult including along Interstate
  80.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ026-130030-
/O.EXB.KRIW.WW.Y.0030.221212T1621Z-221213T1300Z/
Upper Green River Basin-
Including the cities of La Barge, Big Piney, and Farson
921 AM MST Mon Dec 12 2022

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 AM MST TUESDAY...

* WHAT...Snow. Total snow accumulations of 2 to 4 inches.

* WHERE...Upper Green River Basin.

* WHEN...Until 6 AM MST Tuesday.

* IMPACTS...Travel could be very difficult. Blowing and drifting 
  of snow is possible and would limit visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ003-130030-
/O.EXB.KRIW.WW.Y.0030.221212T2100Z-221214T0000Z/
Cody Foothills-
Including the cities of Clark, Cody, and Meeteetse
921 AM MST Mon Dec 12 2022

...WINTER WEATHER ADVISORY IN EFFECT FROM 2 PM THIS AFTERNOON TO
5 PM MST TUESDAY...

* WHAT...Snow expected. Total snow accumulations of 3 to 5 
  inches. Winds gusting as high as 45 mph.

* WHERE...Cody Foothills.

* WHEN...From 2 PM this afternoon to 5 PM MST Tuesday.

* IMPACTS...Travel could be very difficult. Blowing and drifting 
  of snow is possible and would limit visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ028-029-130030-
/O.EXB.KRIW.WW.Y.0030.221212T1900Z-221214T0600Z/
Rock Springs and Green River-Flaming Gorge-
Including the cities of Rock Springs and Green River
921 AM MST Mon Dec 12 2022

...WINTER WEATHER ADVISORY IN EFFECT FROM NOON TODAY TO 11 PM MST
TUESDAY...

* WHAT...Snow expected. Total snow accumulations of 3 to 6 inches.
  Locally higher amounts up to 10 inches east of Flaming Gorge
  Reservoir. Winds gusting as high as 40 mph.

* WHERE...Rock Springs and Green River and Flaming Gorge.

* WHEN...From noon today to 11 PM MST Tuesday.

* IMPACTS...Travel could be very difficult, including on
  Interstate 80. Blowing and drifting of snow is possible and would
  limit visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ027-130030-
/O.EXT.KRIW.WW.Y.0030.000000T0000Z-221213T1300Z/
South Lincoln County-
Including the cities of Kemmerer and Cokeville
921 AM MST Mon Dec 12 2022

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 6 AM MST TUESDAY...

* WHAT...Periods of snow. Additional snow accumulations of up to 
  3 inches near Sage Junction and Cokeville, with around 1 inch 
  of additional snowfall expected near Kemmerer.

* WHERE...South Lincoln County.

* WHEN...Until 6 AM MST Tuesday.

* IMPACTS...Plan on slippery road conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ017-018-130030-
/O.EXT.KRIW.WW.Y.0030.221212T1900Z-221214T1300Z/
Wind River Basin-Lander Foothills-
Including the cities of Riverton, Shoshoni, and Lander
921 AM MST Mon Dec 12 2022

...WINTER WEATHER ADVISORY NOW IN EFFECT FROM NOON TODAY TO 6 AM
MST WEDNESDAY...

* WHAT...Snow expected. Total snow accumulations of 3 to 6 
  inches with isolated higher amounts up to 9 inches in portions 
  of the Lander Foothills. Winds gusting as high as 35 mph 
  tonight.

* WHERE...Wind River Basin and Lander Foothills.

* WHEN...From noon today to 6 AM MST Wednesday.

* IMPACTS...Plan on slippery road and difficult travel conditions.
  Blowing and drifting snow is possible, which would reduce
  visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ001-130030-
/O.CON.KRIW.WW.Y.0030.000000T0000Z-221213T0600Z/
Yellowstone National Park-
Including the cities of Lake, Mammoth, and Old Faithful
921 AM MST Mon Dec 12 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...

* WHAT...Periods of snow. Additional snow of 2 to 4 inches are 
  expected.

* WHERE...Yellowstone National Park.

* WHEN...Until 11 PM Monday.

* IMPACTS...Travel could be difficult at times on the roads 
  across northern Yellowstone National Park.

* ADDITIONAL DETAILS...If you are planning outdoor recreation in 
  Yellowstone, prepare for hazardous winter conditions, cold, 
  and low visibility. Backcountry enthusiasts can easily become 
  disoriented and lost. Frostbite and hypothermia can set in 
  quickly.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ012-013-130030-
/O.CON.KRIW.WW.Y.0030.000000T0000Z-221213T0600Z/
Teton and Gros Ventre Mountains-Jackson Hole-
Including the city of Jackson
921 AM MST Mon Dec 12 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...

* WHAT...Periods of snow. Additional snowfall of 2 to 3 inches 
  in the lower elevations, and 3 to 6 inches in the mountains.

* WHERE...Teton and Gros Ventre Mountains and Jackson Hole.

* WHEN...Until 11 PM Monday.

* IMPACTS...Travel could be difficult, especially over Teton and 
  Togwotee Passes.

* ADDITIONAL DETAILS...Please monitor the Bridger-Teton Avalanche
  Center at JHAVALANCHE.ORG, if your plans include travel into the
  backcountry. Backcountry enthusiasts can easily become 
  disoriented and lost. Frostbite and hypothermia can set in 
  quickly.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ023-024-130030-
/O.CON.KRIW.WW.Y.0030.000000T0000Z-221213T0600Z/
Star Valley-Salt River and Wyoming Ranges-
Including the cities of Afton, Alpine, Star Valley Ranch, 
and Thayne
921 AM MST Mon Dec 12 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...

* WHAT...Periods of snow. Additional snowfall of 2 to 4 inches 
  in the lower elevations, and 4 to 6 inches in the mountains.

* WHERE...Star Valley and Salt River and Wyoming Ranges.

* WHEN...Until 11 PM Monday.

* IMPACTS...Plan on slippery road conditions and reduced 
  visibility at times.

* ADDITIONAL DETAILS...Please monitor the Bridger-Teton Avalanche
  Center at JHAVALANCHE.ORG, if your plans include travel into the
  backcountry. Backcountry enthusiasts can easily become 
  disoriented and lost. Frostbite and hypothermia can set in 
  quickly.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ014-130030-
/O.CON.KRIW.WW.Y.0030.000000T0000Z-221213T0600Z/
Wind River Mountains West-
921 AM MST Mon Dec 12 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...

* WHAT...Periods of snow. Additional snowfall between 3 and 6 
  inches.

* WHERE...Western Wind River Mountains.

* WHEN...Until 11 PM Monday.

* IMPACTS...Plan on slippery road conditions, including over 
  South Pass. Blowing snow at times could significantly reduce 
  visibility.

* ADDITIONAL DETAILS...Backcountry enthusiasts can easily become 
  disoriented and lost. Frostbite and hypothermia can set in 
  quickly.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ025-130030-
/O.CON.KRIW.WW.Y.0030.000000T0000Z-221213T0600Z/
Upper Green River Basin Foothills-
Including the city of Pinedale
921 AM MST Mon Dec 12 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...

* WHAT...Periods of snow. Additional snow accumulations of 2 to 
  4 inches.

* WHERE...Upper Green River Basin Foothills including Pinedale 
  and Bondurant.

* WHEN...Until 11 PM Monday.

* IMPACTS...Plan on slippery road conditions and reduced
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ006-130030-
/O.CON.KRIW.WW.Y.0030.221212T2200Z-221214T1300Z/
Southeast Big Horn Basin-
Including the cities of Ten Sleep and Worland
921 AM MST Mon Dec 12 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 3 PM THIS
AFTERNOON TO 6 AM MST WEDNESDAY...

* WHAT...Snow expected. Total snow accumulations of 3 to 6 
  inches.

* WHERE...Southeast Big Horn Basin including Ten Sleep and 
  Worland. Heavier amounts of snow could occur in the Nowood 
  Valley.

* WHEN...From 3 PM Monday to 6 AM Wednesday.

* IMPACTS...Plan on slippery roads and difficult travel
  conditions. Blowing snow could reduce visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ008-009-130030-
/O.CON.KRIW.WW.Y.0030.221212T2200Z-221214T1300Z/
Bighorn Mountains West-Bighorn Mountains Southeast-
921 AM MST Mon Dec 12 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 3 PM THIS
AFTERNOON TO 6 AM MST WEDNESDAY...

* WHAT...Snow expected. Total snow accumulations of 5 to 10 
  inches with isolated amounts up to 15 inches.

* WHERE...Bighorn Mountains.

* WHEN...From 3 PM today to 6 AM Wednesday.

* IMPACTS...Travel could be very difficult over mountain passes.
  Blowing and drifting of snow is possible and would limit
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ015-130030-
/O.CON.KRIW.WW.Y.0030.221213T0000Z-221214T1300Z/
Wind River Mountains East-
921 AM MST Mon Dec 12 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 6 AM MST WEDNESDAY...

* WHAT...Snow expected. Total snow accumulations of 4 to 8 
  inches along South Pass, with 1 to 2 inches expected in the 
  northern portions of the range, including over Union Pass. 
  Winds gusting as high as 40 mph.

* WHERE...Eastern Wind River Mountains.

* WHEN...From 5 PM Monday to 6 AM Wednesday.

* IMPACTS...Plan on slippery road and difficult travel conditions,
  including over South Pass. Blowing and drifting snow is
  possible, which would severely reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/riw
8 follow-up statements
113 
WWUS45 KRIW 122046
WSWRIW

URGENT - WINTER WEATHER MESSAGE
National Weather Service Riverton WY
146 PM MST Mon Dec 12 2022

WYZ017-018-130500-
/O.UPG.KRIW.WW.Y.0030.000000T0000Z-221214T1300Z/
/O.EXB.KRIW.WS.W.0014.221212T2046Z-221214T1300Z/
Wind River Basin-Lander Foothills-
Including the cities of Riverton, Shoshoni, and Lander
146 PM MST Mon Dec 12 2022

...WINTER STORM WARNING IN EFFECT UNTIL 6 AM MST WEDNESDAY...

* WHAT...Heavy snow. Additional snow accumulations of 8 to 12
  inches for Riverton; 4 to 6 inches for Shoshoni; 10 to 14 inches
  for Lander. Winds gusting as high as 35 mph.

* WHERE...Wind River Basin and Lander Foothills.

* WHEN...Until 6 AM MST Wednesday.

* IMPACTS...Plan on slippery roads and difficult to nearly
  impossible travel conditions. Blowing and drifting snow is 
  possible, which would reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ015-130500-
/O.UPG.KRIW.WW.Y.0030.221213T0000Z-221214T1300Z/
/O.EXB.KRIW.WS.W.0014.221212T2046Z-221214T1300Z/
Wind River Mountains East-
146 PM MST Mon Dec 12 2022

...WINTER STORM WARNING IN EFFECT UNTIL 6 AM MST WEDNESDAY...

* WHAT...Heavy snow. Additional snow accumulations of 8 to 14 
  inches. Winds gusting as high as 35 mph.

* WHERE...Wind River Mountains East.

* WHEN...Until 6 AM MST Wednesday.

* IMPACTS...Plan on slippery road and difficult travel conditions,
  including over South Pass. Blowing and drifting snow is
  possible, which would severely reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ010-130500-
/O.CON.KRIW.BZ.W.0002.221213T0000Z-221215T0000Z/
Northeast Johnson County-
Including the city of Buffalo
146 PM MST Mon Dec 12 2022

...BLIZZARD WARNING REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON TO
5 PM MST WEDNESDAY...

* WHAT...Blizzard conditions expected. Total snow accumulations 
  of 8 to 12 inches. Winds gusting as high as 50 mph.

* WHERE...Northern Johnson County.

* WHEN...From 5 PM this afternoon to 5 PM MST Wednesday.

* IMPACTS...Travel could be very difficult to impossible at 
  times. Blowing snow could significantly reduce visibility, 
  including on Interstate 25 and Interstate 90. Whiteout 
  conditions are likely at times. Road closures are likely.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Travel should be restricted to emergencies only. If you must
travel, have a winter survival kit with you. If you get stranded,
stay with your vehicle. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ020-022-130500-
/O.CON.KRIW.WS.W.0014.221213T0000Z-221215T0000Z/
Natrona County Lower Elevations-Casper Mountain-
Including the city of Casper
146 PM MST Mon Dec 12 2022

...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 5 PM MST WEDNESDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 6 to 
  12 inches in the lower elevations, with 15 to 20 inches on 
  Casper Mountain. Casper Mountain could see locally up to 2 
  feet of snow. Winds gusting as high as 35 mph tonight.

* WHERE...Natrona County Lower Elevations and Casper Mountain.

* WHEN...From 5 PM this afternoon to 5 PM Wednesday.

* IMPACTS...Travel could be very difficult to nearly impossible 
  at times in rural areas, and any roads on Casper Mountain. 
  Road closures are likely.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ011-130500-
/O.CON.KRIW.WS.W.0014.221213T0000Z-221215T0000Z/
Southeast Johnson County-
Including the city of Kaycee
146 PM MST Mon Dec 12 2022

...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 5 PM MST WEDNESDAY...

* WHAT...Heavy snow with significant blowing and drifting snow 
  expected. Total snow accumulations of 6 to 12 inches. Winds 
  gusting as high as 30 mph, with gusts up to 50 mph over 
  eastern portions of the county.

* WHERE...Southern Johnson County.

* WHEN...From 5 PM this afternoon to 5 PM Wednesday.

* IMPACTS...Travel could be very difficult to impossible at 
  times. Blowing snow could significantly reduce visibility, 
  including on Interstate 25. Whiteout conditions are likely at 
  times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ005-007-130500-
/O.CON.KRIW.WS.W.0014.221212T2200Z-221214T1300Z/
Southwest Big Horn Basin-Owl Creek and Bridger Mountains-
Including the city of Thermopolis
146 PM MST Mon Dec 12 2022

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MST
WEDNESDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 5 to 
  10 inches for lower elevations, and 12 to 18 inches for the 
  mountains. Winds gusting as high as 30 mph.

* WHERE...Southwest Big Horn Basin and Owl Creek and Bridger 
  Mountains.

* WHEN...From 3 PM today to 6 AM Wednesday.

* IMPACTS...Travel could be very difficult. Blowing and drifting 
  of snow is possible, which would result in severely reduced 
  visibility at times, including through Wind River Canyon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ019-130500-
/O.CON.KRIW.WS.W.0014.221213T0000Z-221214T1300Z/
Green Mountains and Rattlesnake Range-
Including the city of Jeffrey City
146 PM MST Mon Dec 12 2022

...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 6 AM MST WEDNESDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 10 to 14 
  inches. Winds gusting as high as 45 mph.

* WHERE...Green Mountains and Rattlesnake Range.

* WHEN...From 5 PM this afternoon to 6 AM Wednesday.

* IMPACTS...Plan on slippery roads and difficult travel 
  conditions. Blowing and drifting snow is possible, which would 
  reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ030-130500-
/O.CON.KRIW.WS.W.0014.221213T0000Z-221214T1300Z/
East Sweetwater County-
Including the city of Wamsutter
146 PM MST Mon Dec 12 2022

...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 6 AM MST WEDNESDAY...

* WHAT...Periods of snow, heavy at times. Total snow accumulations
  of 4 to 10 inches. Winds gusting as high as 40 mph.

* WHERE...East Sweetwater County.

* WHEN...From 5 PM Monday to 6 AM Wednesday.

* IMPACTS...Travel could be difficult including along Interstate 
  80.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ016-130500-
/O.EXA.KRIW.WW.Y.0030.000000T0000Z-221214T0600Z/
Upper Wind River Basin-
Including the city of Dubois
146 PM MST Mon Dec 12 2022

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 11 PM MST TUESDAY...

* WHAT...Snow. Additional snow accumulations of 1 to 3 inches for
  Dubois; 4 to 6 inches for Crowheart.

* WHERE...Upper Wind River Basin.

* WHEN...From noon today to 11 PM MST Tuesday.

* IMPACTS...Plan on slippery road conditions and reduced
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ001-130500-
/O.CON.KRIW.WW.Y.0030.000000T0000Z-221213T0600Z/
Yellowstone National Park-
Including the cities of Lake, Mammoth, and Old Faithful
146 PM MST Mon Dec 12 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...

* WHAT...Periods of snow. Additional snow of up to 2 inches is
  possible.

* WHERE...Yellowstone National Park.

* WHEN...Until 11 PM Monday.

* IMPACTS...Travel could be difficult at times on the roads across
  northern Yellowstone National Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ012-013-130500-
/O.CON.KRIW.WW.Y.0030.000000T0000Z-221213T0600Z/
Teton and Gros Ventre Mountains-Jackson Hole-
Including the city of Jackson
146 PM MST Mon Dec 12 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...

* WHAT...Periods of snow. Additional snowfall of 1 to 3 inches 
  in the lower elevations, and 2 to 4 inches in the mountains.

* WHERE...Teton and Gros Ventre Mountains and Jackson Hole.

* WHEN...Until 11 PM Monday.

* IMPACTS...Travel could be difficult, especially over Teton and
  Togwotee Passes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ023-024-130500-
/O.CON.KRIW.WW.Y.0030.000000T0000Z-221213T0600Z/
Star Valley-Salt River and Wyoming Ranges-
Including the cities of Afton, Alpine, Star Valley Ranch, 
and Thayne
146 PM MST Mon Dec 12 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...

* WHAT...Periods of snow. Additional snowfall of 3 to 5 inches 
  in the lower elevations, and 6 to 10 inches in the mountains.

* WHERE...Star Valley and Salt River and Wyoming Ranges.

* WHEN...Until 11 PM Monday.

* IMPACTS...Plan on slippery road conditions and reduced
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ014-130500-
/O.CON.KRIW.WW.Y.0030.000000T0000Z-221213T0600Z/
Wind River Mountains West-
146 PM MST Mon Dec 12 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...

* WHAT...Periods of snow. Additional snowfall between 3 and 6 
  inches.

* WHERE...Western Wind River Mountains.

* WHEN...Until 11 PM Monday.

* IMPACTS...Plan on slippery road conditions, including over South
  Pass. Blowing snow at times could significantly reduce
  visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ026-027-130500-
/O.CON.KRIW.WW.Y.0030.000000T0000Z-221213T1300Z/
Upper Green River Basin-South Lincoln County-
Including the cities of La Barge, Big Piney, Farson, Kemmerer, 
and Cokeville
146 PM MST Mon Dec 12 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MST
TUESDAY...

* WHAT...Snow. Total snow accumulations of 3 to 5 inches.

* WHERE...Upper Green River Basin.

* WHEN...Until 6 AM MST Tuesday.

* IMPACTS...Travel could be very difficult. Blowing and drifting 
  of snow is possible and would limit visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ025-130500-
/O.CON.KRIW.WW.Y.0030.000000T0000Z-221213T0600Z/
Upper Green River Basin Foothills-
Including the city of Pinedale
146 PM MST Mon Dec 12 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...

* WHAT...Periods of snow. Additional snow accumulations of 2 to 
  4 inches.

* WHERE...Upper Green River Basin Foothills including Pinedale 
  and Bondurant.

* WHEN...Until 11 PM Monday.

* IMPACTS...Plan on slippery road conditions and reduced 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ006-130500-
/O.CON.KRIW.WW.Y.0030.221212T2200Z-221214T1300Z/
Southeast Big Horn Basin-
Including the cities of Ten Sleep and Worland
146 PM MST Mon Dec 12 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MST
WEDNESDAY...

* WHAT...Snow expected. Total snow accumulations of 3 to 6 
  inches.

* WHERE...Southeast Big Horn Basin including Ten Sleep and 
  Worland. Heavier amounts of snow could occur in the Nowood 
  Valley.

* WHEN...From 3 PM Monday to 6 AM Wednesday.

* IMPACTS...Plan on slippery roads and difficult travel 
  conditions. Blowing snow could reduce visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ008-009-130500-
/O.CON.KRIW.WW.Y.0030.221212T2200Z-221214T1300Z/
Bighorn Mountains West-Bighorn Mountains Southeast-
146 PM MST Mon Dec 12 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MST
WEDNESDAY...

* WHAT...Snow expected. Total snow accumulations of 5 to 10 
  inches with isolated amounts up to 15 inches.

* WHERE...Bighorn Mountains.

* WHEN...From 3 PM today to 6 AM Wednesday.

* IMPACTS...Travel could be very difficult over mountain passes. 
  Blowing and drifting of snow is possible and would limit 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ003-130500-
/O.CON.KRIW.WW.Y.0030.221212T2100Z-221214T0000Z/
Cody Foothills-
Including the cities of Clark, Cody, and Meeteetse
146 PM MST Mon Dec 12 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST
TUESDAY...

* WHAT...Snow expected. Total snow accumulations of 3 to 6 
  inches. Winds gusting as high as 45 mph.

* WHERE...Cody Foothills.

* WHEN...From 2 PM this afternoon to 5 PM MST Tuesday.

* IMPACTS...Travel could be very difficult. Blowing and drifting 
  of snow is possible and would limit visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ028-029-130500-
/O.CON.KRIW.WW.Y.0030.000000T0000Z-221214T0600Z/
Rock Springs and Green River-Flaming Gorge-
Including the cities of Rock Springs and Green River
146 PM MST Mon Dec 12 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST
TUESDAY...

* WHAT...Snow expected. Total snow accumulations of 4 to 8 
  inches. Locally higher amounts up to 10 inches east of Flaming 
  Gorge Reservoir. Winds gusting as high as 40 mph.

* WHERE...Rock Springs and Green River and Flaming Gorge.

* WHEN...From noon today to 11 PM MST Tuesday.

* IMPACTS...Travel could be very difficult, including on 
  Interstate 80. Blowing and drifting of snow is possible and 
  would limit visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/riw
699 
WWUS45 KRIW 130053
WSWRIW

URGENT - WINTER WEATHER MESSAGE
National Weather Service Riverton WY
553 PM MST Mon Dec 12 2022

WYZ010-130600-
/O.CON.KRIW.BZ.W.0002.000000T0000Z-221215T0000Z/
Northeast Johnson County-
Including the city of Buffalo
553 PM MST Mon Dec 12 2022

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 5 PM MST WEDNESDAY...

* WHAT...Blizzard conditions expected to begin early Tuesday.
  Total snow accumulations of 8 to 12 inches. Winds gusting 35 to
  45 mph.

* WHERE...Northern Johnson County.

* WHEN...Until 5 PM MST Wednesday.

* IMPACTS...Travel could be very difficult to impossible at times,
  especially Tuesday and Tuesday night. Blowing snow could
  significantly reduce visibility, including on Interstate 25 and
  Interstate 90. Whiteout conditions are likely at times. Road
  closures possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Travel should be restricted to emergencies only. If you must
travel, have a winter survival kit with you. If you get stranded,
stay with your vehicle.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ020-022-130600-
/O.CON.KRIW.WS.W.0014.000000T0000Z-221215T0000Z/
Natrona County Lower Elevations-Casper Mountain-
Including the city of Casper
553 PM MST Mon Dec 12 2022

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST
WEDNESDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 6 to 12
  inches in the lower elevations, with 15 to 20 inches on Casper
  Mountain. Casper Mountain could see locally up to 2 feet of
  snow. Winds gusting 25 to 35 mph through midday Tuesday.

* WHERE...Natrona County Lower Elevations and Casper Mountain.

* WHEN...Until 5 PM MST Wednesday.

* IMPACTS...Travel could be very difficult to nearly impossible at
  times in rural areas, and any roads on Casper Mountain. Road
  closures are possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ011-130600-
/O.CON.KRIW.WS.W.0014.000000T0000Z-221215T0000Z/
Southeast Johnson County-
Including the city of Kaycee
553 PM MST Mon Dec 12 2022

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST
WEDNESDAY...

* WHAT...Heavy snow with significant blowing and drifting snow
  expected to begin early Tuesday. Total snow accumulations of 6
  to 12 inches. Winds gusting as high as 30 mph, with gusts 35 to
  45 mph near the Campbell County line.

* WHERE...Southern Johnson County.

* WHEN...Until 5 PM MST Wednesday.

* IMPACTS...Travel could be very difficult to impossible at times.
  Blowing snow could significantly reduce visibility, including on
  Interstate 25. Whiteout conditions are likely at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ005-007-130600-
/O.CON.KRIW.WS.W.0014.000000T0000Z-221214T1300Z/
Southwest Big Horn Basin-Owl Creek and Bridger Mountains-
Including the city of Thermopolis
553 PM MST Mon Dec 12 2022

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MST
WEDNESDAY...

* WHAT...Moderate to heavy snow expected. Total snow 
  accumulations of 5 to 10 inches for lower elevations, and 12 to 
  18 inches for the mountains. Winds gusting as high as 30 mph.

* WHERE...Southwest Big Horn Basin and Owl Creek and Bridger 
  Mountains.

* WHEN...Until 6 AM MST Wednesday.

* IMPACTS...Travel could be very difficult. Blowing and drifting 
  of snow is possible, which would result in severely reduced 
  visibility at times, including through Wind River Canyon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ019-130600-
/O.CON.KRIW.WS.W.0014.000000T0000Z-221214T1300Z/
Green Mountains and Rattlesnake Range-
Including the city of Jeffrey City
553 PM MST Mon Dec 12 2022

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MST
WEDNESDAY...

* WHAT...Moderate to heavy snow expected. Total snow accumulations
  of 8 to 14 inches. Winds gusting 35 to 45 mph.

* WHERE...Green Mountains and Rattlesnake Range.

* WHEN...Until 6 AM MST Wednesday.

* IMPACTS...Plan on difficult travel conditions. Blowing and
  drifting snow is likely, which would reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ030-130600-
/O.CON.KRIW.WS.W.0014.000000T0000Z-221214T1300Z/
East Sweetwater County-
Including the city of Wamsutter
553 PM MST Mon Dec 12 2022

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MST
WEDNESDAY...

* WHAT...Periods of snow, heavy at times. Total snow accumulations
  of 5 to 10 inches. Winds gusting 20 to 30 mph.

* WHERE...East Sweetwater County.

* WHEN...Until 6 AM MST Wednesday.

* IMPACTS...Travel could be difficult including along Interstate 
  80.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ015-017-018-130600-
/O.CON.KRIW.WS.W.0014.000000T0000Z-221214T1300Z/
Wind River Mountains East-Wind River Basin-Lander Foothills-
Including the cities of Riverton, Shoshoni, and Lander
553 PM MST Mon Dec 12 2022

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MST
WEDNESDAY...

* WHAT...Heavy snow. Storm total accumulations of 10 to 14 
  inches. Winds gusting as high as 35 mph.

* WHERE...Wind River Mountains East.

* WHEN...Until 6 AM MST Wednesday.

* IMPACTS...Plan on difficult travel conditions, including over 
  South Pass. Blowing and drifting snow is possible, which would 
  severely reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ001-130600-
/O.CON.KRIW.WW.Y.0030.000000T0000Z-221213T0600Z/
Yellowstone National Park-
Including the cities of Lake, Mammoth, and Old Faithful
553 PM MST Mon Dec 12 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...

* WHAT...Periods of snow. Additional snow of up to 2 inches.

* WHERE...Yellowstone National Park.

* WHEN...Until 11 PM MST Monday.

* IMPACTS...Travel could be difficult at times on the roads 
  across northern Yellowstone National Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ012-013-130600-
/O.CON.KRIW.WW.Y.0030.000000T0000Z-221213T0600Z/
Teton and Gros Ventre Mountains-Jackson Hole-
Including the city of Jackson
553 PM MST Mon Dec 12 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...

* WHAT...Periods of light snow. Additional snowfall around 1 inch
  in the lower elevations, and 1 to 3 inches in the mountains.

* WHERE...Teton and Gros Ventre Mountains and Jackson Hole.

* WHEN...Until 11 PM MST Monday.

* IMPACTS...Travel could be difficult, especially over Teton and 
  Togwotee Passes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ023-024-130600-
/O.CON.KRIW.WW.Y.0030.000000T0000Z-221213T0600Z/
Star Valley-Salt River and Wyoming Ranges-
Including the cities of Afton, Alpine, Star Valley Ranch, 
and Thayne
553 PM MST Mon Dec 12 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...

* WHAT...Periods of light snow. Additional snowfall of 1 to 2
  inches in the lower elevations, and 3 to 5 inches in the 
  mountains.

* WHERE...Star Valley and Salt River and Wyoming Ranges.

* WHEN...Until 11 PM MST Monday.

* IMPACTS...Plan on slippery road conditions and reduced 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ014-130600-
/O.CON.KRIW.WW.Y.0030.000000T0000Z-221213T0600Z/
Wind River Mountains West-
553 PM MST Mon Dec 12 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...

* WHAT...Periods of snow. Additional snowfall between 1 and 3 
  inches.

* WHERE...Western Wind River Mountains.

* WHEN...Until 11 PM MST Monday.

* IMPACTS...Plan on slippery road conditions, including over 
  South Pass. Blowing snow at times could significantly reduce 
  visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ026-027-130600-
/O.CON.KRIW.WW.Y.0030.000000T0000Z-221213T1300Z/
Upper Green River Basin-South Lincoln County-
Including the cities of La Barge, Big Piney, Farson, Kemmerer, 
and Cokeville
553 PM MST Mon Dec 12 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MST
TUESDAY...

* WHAT...Snow. Total snow accumulations of 3 to 5 inches.

* WHERE...Upper Green River Basin.

* WHEN...Until 6 AM MST Tuesday.

* IMPACTS...Travel could be very difficult. Blowing and drifting 
  of snow is possible and would limit visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ025-130600-
/O.CON.KRIW.WW.Y.0030.000000T0000Z-221213T0600Z/
Upper Green River Basin Foothills-
Including the city of Pinedale
553 PM MST Mon Dec 12 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...

* WHAT...Periods of snow. Total snow accumulations of 3 to 5
  inches. 

* WHERE...Upper Green River Basin Foothills including Pinedale 
  and Bondurant.

* WHEN...Until 11 PM MST Monday.

* IMPACTS...Plan on slippery road conditions and reduced 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ006-130600-
/O.CON.KRIW.WW.Y.0030.000000T0000Z-221214T1300Z/
Southeast Big Horn Basin-
Including the cities of Ten Sleep and Worland
553 PM MST Mon Dec 12 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MST
WEDNESDAY...

* WHAT...Snow expected. Total snow accumulations of 3 to 6 
  inches.

* WHERE...Southeast Big Horn Basin including Ten Sleep and 
  Worland. Heavier amounts of snow could occur in the Nowood 
  Valley south of Ten Sleep.

* WHEN...Until 6 AM MST Wednesday.

* IMPACTS...Plan on slippery roads and difficult travel 
  conditions. Blowing snow could reduce visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ008-009-130600-
/O.CON.KRIW.WW.Y.0030.000000T0000Z-221214T1300Z/
Bighorn Mountains West-Bighorn Mountains Southeast-
553 PM MST Mon Dec 12 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MST
WEDNESDAY...

* WHAT...Snow. Total snow accumulations of 5 to 10 inches with
  isolated amounts up to 15 inches west of Buffalo and over the
  far southern end of the range.

* WHERE...Bighorn Mountains.

* WHEN...Until 6 AM MST Wednesday.

* IMPACTS...Travel could be very difficult over mountain passes. 
  Blowing and drifting of snow is possible and would limit 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ016-130600-
/O.CON.KRIW.WW.Y.0030.000000T0000Z-221214T0600Z/
Upper Wind River Basin-
Including the city of Dubois
553 PM MST Mon Dec 12 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST
TUESDAY...

* WHAT...Snow. Total snowfall of 3 to 5 inches, with amounts
  around 6 inches near Crowheart.

* WHERE...Upper Wind River Basin.

* WHEN...Until 11 PM MST Tuesday.

* IMPACTS...Plan on slippery road conditions and reduced 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ003-130600-
/O.CON.KRIW.WW.Y.0030.000000T0000Z-221214T0000Z/
Cody Foothills-
Including the cities of Clark, Cody, and Meeteetse
553 PM MST Mon Dec 12 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST
TUESDAY...

* WHAT...Snow expected. Total snow accumulations of 3 to 6 inches.
  Winds gusting 25 to 35 mph through Tuesday.

* WHERE...Cody Foothills.

* WHEN...Until 5 PM MST Tuesday.

* IMPACTS...Travel could be very difficult. Blowing and drifting 
  of snow is possible and would limit visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ028-029-130600-
/O.CON.KRIW.WW.Y.0030.000000T0000Z-221214T0600Z/
Rock Springs and Green River-Flaming Gorge-
Including the cities of Rock Springs and Green River
553 PM MST Mon Dec 12 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST
TUESDAY...

* WHAT...Snow. Total snow accumulations of 4 to 8 inches. Locally amounts
  up to 10 inches in the higher mountains of southern Sweetwater 
  County. Winds gusting 20 to 30 mph.

* WHERE...Rock Springs and Green River and Flaming Gorge.

* WHEN...Until 11 PM MST Tuesday.

* IMPACTS...Travel could be very difficult, including on 
  Interstate 80. Blowing and drifting of snow is possible and 
  would limit visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/riw
006 
WWUS45 KRIW 130543
WSWRIW

URGENT - WINTER WEATHER MESSAGE
National Weather Service Riverton WY
1043 PM MST Mon Dec 12 2022

WYZ001-130645-
/O.EXP.KRIW.WW.Y.0030.000000T0000Z-221213T0600Z/
Yellowstone National Park-
Including the cities of Lake, Mammoth, and Old Faithful
1043 PM MST Mon Dec 12 2022

...WINTER WEATHER ADVISORY WILL EXPIRE AT 11 PM MST THIS
EVENING...

Any additional snow accumulations will be minimal. Therefore, the
winter weather advisory will be allowed to expire.

$$

WYZ012-013-130645-
/O.EXP.KRIW.WW.Y.0030.000000T0000Z-221213T0600Z/
Teton and Gros Ventre Mountains-Jackson Hole-
Including the city of Jackson
1043 PM MST Mon Dec 12 2022

...WINTER WEATHER ADVISORY WILL EXPIRE AT 11 PM MST THIS
EVENING...

Any additional snow accumulations will be minimal and likely
limited to the mountains. Therefore, the winter weather advisory 
will be allowed to expire.

$$

WYZ023-024-130645-
/O.EXP.KRIW.WW.Y.0030.000000T0000Z-221213T0600Z/
Star Valley-Salt River and Wyoming Ranges-
Including the cities of Afton, Alpine, Star Valley Ranch, 
and Thayne
1043 PM MST Mon Dec 12 2022

...WINTER WEATHER ADVISORY WILL EXPIRE AT 11 PM MST THIS
EVENING...

Any additional snow accumulations will be minimal and likely
limited to the mountains. Therefore, the winter weather advisory 
will be allowed to expire.

$$

WYZ014-130645-
/O.EXP.KRIW.WW.Y.0030.000000T0000Z-221213T0600Z/
Wind River Mountains West-
1043 PM MST Mon Dec 12 2022

...WINTER WEATHER ADVISORY WILL EXPIRE AT 11 PM MST THIS
EVENING...

Any additional snow accumulations will total an inch or less. 
Therefore, the winter weather advisory will be allowed to expire.

$$

WYZ025-130645-
/O.EXP.KRIW.WW.Y.0030.000000T0000Z-221213T0600Z/
Upper Green River Basin Foothills-
Including the city of Pinedale
1043 PM MST Mon Dec 12 2022

...WINTER WEATHER ADVISORY WILL EXPIRE AT 11 PM MST THIS
EVENING...

Any additional snow accumulations will be minimal and much of the
snow will end by 1 AM. Therefore, the winter weather advisory 
will be allowed to expire.

$$

WYZ010-131300-
/O.CON.KRIW.BZ.W.0002.000000T0000Z-221215T0000Z/
Northeast Johnson County-
Including the city of Buffalo
1043 PM MST Mon Dec 12 2022

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 5 PM MST WEDNESDAY...

* WHAT...Blizzard conditions expected to begin early Tuesday. 
  Total snow accumulations of 8 to 12 inches. Winds gusting 35 
  to 45 mph.

* WHERE...Northern Johnson County.

* WHEN...Until 5 PM MST Wednesday.

* IMPACTS...Travel could be very difficult to impossible at 
  times, especially Tuesday and Tuesday night. Blowing snow 
  could significantly reduce visibility, including on Interstate 
  25 and Interstate 90. Whiteout conditions are likely at times. 
  Road closures possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Travel should be restricted to emergencies only. If you must
travel, have a winter survival kit with you. If you get stranded,
stay with your vehicle. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ020-022-131300-
/O.CON.KRIW.WS.W.0014.000000T0000Z-221215T0000Z/
Natrona County Lower Elevations-Casper Mountain-
Including the city of Casper
1043 PM MST Mon Dec 12 2022

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST
WEDNESDAY...

* WHAT...Heavy snow. Total snow accumulations of 6 to 12 inches 
  in the lower elevations, with 15 to 20 inches on Casper 
  Mountain. Casper Mountain could see locally up to 2 feet of 
  snow. Winds gusting 25 to 35 mph through midday Tuesday.

* WHERE...Natrona County Lower Elevations and Casper Mountain.

* WHEN...Until 5 PM MST Wednesday.

* IMPACTS...Travel could be very difficult to nearly impossible 
  at times in rural areas, and any roads on Casper Mountain. 
  Road closures are possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ011-131300-
/O.CON.KRIW.WS.W.0014.000000T0000Z-221215T0000Z/
Southeast Johnson County-
Including the city of Kaycee
1043 PM MST Mon Dec 12 2022

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST
WEDNESDAY...

* WHAT...Heavy snow with significant blowing and drifting snow 
  expected to begin early Tuesday. Total snow accumulations of 6 
  to 12 inches. Winds gusting as high as 30 mph, with gusts 35 
  to 45 mph near the Campbell County line.

* WHERE...Southern Johnson County.

* WHEN...Until 5 PM MST Wednesday.

* IMPACTS...Travel could be very difficult to impossible at 
  times. Blowing snow could significantly reduce visibility, 
  including on Interstate 25. Whiteout conditions are likely at 
  times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ005-007-131300-
/O.CON.KRIW.WS.W.0014.000000T0000Z-221214T1300Z/
Southwest Big Horn Basin-Owl Creek and Bridger Mountains-
Including the city of Thermopolis
1043 PM MST Mon Dec 12 2022

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MST
WEDNESDAY...

* WHAT...Moderate to heavy snow. Total snow accumulations of 5 to
  10 inches for lower elevations, and 12 to 18 inches for the 
  mountains. Winds gusting as high as 30 mph.

* WHERE...Southwest Big Horn Basin and Owl Creek and Bridger 
  Mountains.

* WHEN...Until 6 AM MST Wednesday.

* IMPACTS...Travel could be very difficult. Blowing and drifting 
  of snow is possible, which would result in severely reduced 
  visibility at times, including through Wind River Canyon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ019-131300-
/O.CON.KRIW.WS.W.0014.000000T0000Z-221214T1300Z/
Green Mountains and Rattlesnake Range-
Including the city of Jeffrey City
1043 PM MST Mon Dec 12 2022

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MST
WEDNESDAY...

* WHAT...Moderate to heavy snow. Total snow accumulations of 8 to
  14 inches. Winds gusting 35 to 45 mph.

* WHERE...Green Mountains and Rattlesnake Range.

* WHEN...Until 6 AM MST Wednesday.

* IMPACTS...Plan on difficult travel conditions. Blowing and 
  drifting snow is likely, which would reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ030-131300-
/O.CON.KRIW.WS.W.0014.000000T0000Z-221214T1300Z/
East Sweetwater County-
Including the city of Wamsutter
1043 PM MST Mon Dec 12 2022

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MST
WEDNESDAY...

* WHAT...Periods of snow, heavy at times. Total snow 
  accumulations of 5 to 10 inches. Winds gusting 20 to 30 mph.

* WHERE...East Sweetwater County.

* WHEN...Until 6 AM MST Wednesday.

* IMPACTS...Travel could be difficult including along Interstate 
  80.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ015-017-018-131300-
/O.CON.KRIW.WS.W.0014.000000T0000Z-221214T1300Z/
Wind River Mountains East-Wind River Basin-Lander Foothills-
Including the cities of Riverton, Shoshoni, and Lander
1043 PM MST Mon Dec 12 2022

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MST
WEDNESDAY...

* WHAT...Heavy snow. Storm total accumulations of 10 to 14 
  inches. Winds gusting as high as 35 mph.

* WHERE...Wind River Mountains East.

* WHEN...Until 6 AM MST Wednesday.

* IMPACTS...Plan on difficult travel conditions, including over 
  South Pass. Blowing and drifting snow is possible, which would 
  severely reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ026-027-131300-
/O.CON.KRIW.WW.Y.0030.000000T0000Z-221213T1300Z/
Upper Green River Basin-South Lincoln County-
Including the cities of La Barge, Big Piney, Farson, Kemmerer, 
and Cokeville
1043 PM MST Mon Dec 12 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MST
TUESDAY...

* WHAT...Snow. Total snow accumulations of 3 to 5 inches.

* WHERE...Upper Green River Basin.

* WHEN...Until 6 AM MST Tuesday.

* IMPACTS...Travel could be very difficult. Blowing and drifting 
  of snow is possible and would limit visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ006-131300-
/O.CON.KRIW.WW.Y.0030.000000T0000Z-221214T1300Z/
Southeast Big Horn Basin-
Including the cities of Ten Sleep and Worland
1043 PM MST Mon Dec 12 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MST
WEDNESDAY...

* WHAT...Snow. Total snow accumulations of 3 to 6 inches.

* WHERE...Southeast Big Horn Basin including Ten Sleep and 
  Worland. Heavier amounts of snow could occur in the Nowood 
  Valley south of Ten Sleep.

* WHEN...Until 6 AM MST Wednesday.

* IMPACTS...Plan on slippery roads and difficult travel 
  conditions. Blowing snow could reduce visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ008-009-131300-
/O.CON.KRIW.WW.Y.0030.000000T0000Z-221214T1300Z/
Bighorn Mountains West-Bighorn Mountains Southeast-
1043 PM MST Mon Dec 12 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MST
WEDNESDAY...

* WHAT...Snow. Total snow accumulations of 5 to 10 inches with 
  isolated amounts up to 15 inches west of Buffalo and over the 
  far southern end of the range.

* WHERE...Bighorn Mountains.

* WHEN...Until 6 AM MST Wednesday.

* IMPACTS...Travel could be very difficult over mountain passes. 
  Blowing and drifting of snow is possible and would limit 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ016-131300-
/O.CON.KRIW.WW.Y.0030.000000T0000Z-221214T0600Z/
Upper Wind River Basin-
Including the city of Dubois
1043 PM MST Mon Dec 12 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST
TUESDAY...

* WHAT...Snow. Total snowfall of 3 to 5 inches, with amounts 
  around 6 inches near Crowheart.

* WHERE...Upper Wind River Basin.

* WHEN...Until 11 PM MST Tuesday.

* IMPACTS...Plan on slippery road conditions and reduced 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ003-131300-
/O.CON.KRIW.WW.Y.0030.000000T0000Z-221214T0000Z/
Cody Foothills-
Including the cities of Clark, Cody, and Meeteetse
1043 PM MST Mon Dec 12 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST
TUESDAY...

* WHAT...Snow. Total snow accumulations of 3 to 6 inches. Winds 
  gusting 25 to 35 mph through Tuesday.

* WHERE...Cody Foothills.

* WHEN...Until 5 PM MST Tuesday.

* IMPACTS...Travel could be very difficult. Blowing and drifting 
  of snow is possible and would limit visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ028-029-131300-
/O.CON.KRIW.WW.Y.0030.000000T0000Z-221214T0600Z/
Rock Springs and Green River-Flaming Gorge-
Including the cities of Rock Springs and Green River
1043 PM MST Mon Dec 12 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST
TUESDAY...

* WHAT...Snow. Total snow accumulations of 4 to 8 inches. Local 
  amounts up to 10 inches in the higher mountains of southern 
  Sweetwater County. Winds gusting 20 to 30 mph.

* WHERE...Rock Springs and Green River and Flaming Gorge.

* WHEN...Until 11 PM MST Tuesday.

* IMPACTS...Travel could be very difficult, including on 
  Interstate 80. Blowing and drifting of snow is possible and 
  would limit visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/riw
587 
WWUS45 KRIW 130930
WSWRIW

URGENT - WINTER WEATHER MESSAGE
National Weather Service Riverton WY
230 AM MST Tue Dec 13 2022

WYZ010-131730-
/O.CON.KRIW.BZ.W.0002.000000T0000Z-221215T0000Z/
Northeast Johnson County-
Including the city of Buffalo
230 AM MST Tue Dec 13 2022

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 5 PM MST WEDNESDAY...

* WHAT...Blizzard conditions. Additional snow accumulations of 4
  to 8 inches. Northwest winds gusting as high as 60 mph.

* WHERE...Northern Johnson County.

* WHEN...Until 5 PM Wednesday.

* IMPACTS...Travel will be very difficult to impossible through
  the day Wednesday. Snow and blowing snow will result in 
  whiteout conditions at times. This includes Interstate 25 and 
  Interstate 90. Road closures are likely in rural areas.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Travel should be restricted to emergencies only. If you must
travel, have a winter survival kit with you. If you get stranded,
stay with your vehicle.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ020-022-131730-
/O.CON.KRIW.WS.W.0014.000000T0000Z-221215T0000Z/
Natrona County Lower Elevations-Casper Mountain-
Including the city of Casper
230 AM MST Tue Dec 13 2022

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST
WEDNESDAY...

* WHAT...Periods of snow, heavy at times. Additional snow
  accumulations of 4 to 8 inches in the lower elevations, and 10
  to 14 inches in the mountains. Winds gusting as high as 40 mph.

* WHERE...Natrona County Lower Elevations and Casper Mountain.

* WHEN...Until 5 PM Wednesday. The heaviest snow will occur today.

* IMPACTS...Travel could be very difficult to impossible on rural
  areas, and any roads on Casper Mountain. Road closures and 
  flight delays are likely.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ011-131730-
/O.CON.KRIW.WS.W.0014.000000T0000Z-221215T0000Z/
Southeast Johnson County-
Including the city of Kaycee
230 AM MST Tue Dec 13 2022

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST
WEDNESDAY...

* WHAT...Periods of snow, heavy at times. Additional snow
  accumulations of 4 to 8 inches. Winds gusting as high as 45 
  mph.

* WHERE...Southern Johnson County.

* WHEN...Until 5 PM Wednesday.

* IMPACTS...Travel could be very difficult to impossible. Blowing
  snow could significantly reduce visibility to near whiteout
  conditions, including on Interstate 25. Road closures are 
  likely.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ005-007-131730-
/O.CON.KRIW.WS.W.0014.000000T0000Z-221214T1300Z/
Southwest Big Horn Basin-Owl Creek and Bridger Mountains-
Including the city of Thermopolis
230 AM MST Tue Dec 13 2022

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MST
WEDNESDAY...

* WHAT...Periods of snow, moderate at times. Additional snow
  accumulations of 2 to 4 inches in the lower elevations, and 4 to
  8 inches in the mountains. Winds gusting as high as 50 mph in
  the mountains.

* WHERE...Southwest Big Horn Basin and Owl Creek and Bridger 
  Mountains.

* WHEN...Until 6 AM Wednesday. The heaviest snow will occur
  through noon. 

* IMPACTS...Travel could be very difficult. Blowing and drifting
  of snow are possible, which would result in severely reduced 
  visibility at times, including through Wind River Canyon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ019-131730-
/O.CON.KRIW.WS.W.0014.000000T0000Z-221214T1300Z/
Green Mountains and Rattlesnake Range-
Including the city of Jeffrey City
230 AM MST Tue Dec 13 2022

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MST
WEDNESDAY...

* WHAT...Periods of snow, heavy at times. Additional snow
  accumulations of 3 to 6 inches. Winds gusting as high as 45 
  mph.

* WHERE...Green Mountains and Rattlesnake Range.

* WHEN...Until 6 AM Wednesday. The heaviest snow will occur
  through early afternoon.

* IMPACTS...Plan on difficult travel conditions. Blowing and
  drifting snow is likely, which would reduce visibility to near
  whiteout conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ030-131730-
/O.CON.KRIW.WS.W.0014.000000T0000Z-221214T1300Z/
East Sweetwater County-
Including the city of Wamsutter
230 AM MST Tue Dec 13 2022

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MST
WEDNESDAY...

* WHAT...Periods of snow, moderate at times. Additional snow
  accumulations of 2 to 4 inches. 

* WHERE...East Sweetwater County.

* WHEN...Until 6 AM Wednesday. The heaviest snow will occur
  through today.

* IMPACTS...Travel will be very difficult including along 
  Interstate 80.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ015-017-018-131730-
/O.CON.KRIW.WS.W.0014.000000T0000Z-221214T1300Z/
Wind River Mountains East-Wind River Basin-Lander Foothills-
Including the cities of Riverton, Shoshoni, and Lander
230 AM MST Tue Dec 13 2022

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MST
WEDNESDAY...

* WHAT...Periods of snow, moderate at times. Additional snow
  accumulations of 2 to 4 inches with isolated higher amounts in
  the Lander Foothills and in adjacent mountains. Winds gusting 
  as high as 35 mph.

* WHERE...Wind River Basin, Lander Foothills, and eastern slopes
  of the Wind River Mountains.

* WHEN...Until 6 AM Wednesday. The heaviest snow will occur 
  through early afternoon.

* IMPACTS...Plan on difficult travel conditions, including over
  South Pass. Blowing and drifting snow is possible, which would
  severely reduce visibility. Road closures and flight delays are
  possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ026-027-131300-
/O.CON.KRIW.WW.Y.0030.000000T0000Z-221213T1300Z/
Upper Green River Basin-South Lincoln County-
Including the cities of La Barge, Big Piney, Farson, Kemmerer, 
and Cokeville
230 AM MST Tue Dec 13 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MST EARLY
THIS MORNING...

* WHAT...Snow. Additional snow accumulations of up to one inch.

* WHERE...Upper Green River Basin.

* WHEN...Until 6 AM this morning.

* IMPACTS...Travel could be difficult. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ006-131730-
/O.CON.KRIW.WW.Y.0030.000000T0000Z-221214T1300Z/
Southeast Big Horn Basin-
Including the cities of Ten Sleep and Worland
230 AM MST Tue Dec 13 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MST
WEDNESDAY...

* WHAT...Periods of snow, moderate at times. Additional snow
  accumulations of 1 to 3 inches. 

* WHERE...Southeast Big Horn Basin including Ten Sleep and
  Worland. 

* WHEN...Until 6 AM Wednesday. The heaviest snow will occur this
  morning.

* IMPACTS...Plan on wintry driving conditions. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ008-009-131730-
/O.CON.KRIW.WW.Y.0030.000000T0000Z-221214T1300Z/
Bighorn Mountains West-Bighorn Mountains Southeast-
230 AM MST Tue Dec 13 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MST
WEDNESDAY...

* WHAT...Periods of snow. Additional snow accumulations of 3 to 6
  inches. Winds gusting as high as 40 mph.

* WHERE...Bighorn Mountains.

* WHEN...Until 6 AM Wednesday. The heaviest snow will occur
  through early afternoon.

* IMPACTS...Travel could be difficult over mountain passes.
  Blowing and drifting of snow are possible and would severely 
  limit visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ016-131730-
/O.CON.KRIW.WW.Y.0030.000000T0000Z-221214T0600Z/
Upper Wind River Basin-
Including the city of Dubois
230 AM MST Tue Dec 13 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...

* WHAT...Snow. Additional snow accumulations of 1 to 2 inches.

* WHERE...Upper Wind River Basin.

* WHEN...Until 11 PM Tuesday. The heaviest and bulk of the snow
  will occur this morning.

* IMPACTS...Plan on slippery road conditions and reduced 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ003-131730-
/O.CON.KRIW.WW.Y.0030.000000T0000Z-221214T0000Z/
Cody Foothills-
Including the cities of Clark, Cody, and Meeteetse
230 AM MST Tue Dec 13 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...

* WHAT...Snow. Additional snow accumulations of 1 to 2 inches 
  Winds gusting as high as 40 mph.

* WHERE...Cody Foothills.

* WHEN...Until 5 PM Tuesday. The heaviest snow will occur this
  morning.

* IMPACTS...Travel could be very difficult in rural areas. Blowing
  and drifting of snow is possible and would severely limit
  visibilities at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ028-029-131730-
/O.CON.KRIW.WW.Y.0030.000000T0000Z-221214T0600Z/
Rock Springs and Green River-Flaming Gorge-
Including the cities of Rock Springs and Green River
230 AM MST Tue Dec 13 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...

* WHAT...Snow. Additional snow accumulations of 1 to 3 inches. 
  Winds gusting as high as 40 mph this evening.

* WHERE...Rock Springs and Green River and Flaming Gorge.

* WHEN...Until 11 PM Tuesday.

* IMPACTS...Travel could be difficult, including on Interstate 80.
  Blowing and drifting of snow are possible with limited 
  visibility at times especially this evening as west winds 
  increase.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

Team Riverton/21
738 
WWUS45 KRIW 131240
WSWRIW

URGENT - WINTER WEATHER MESSAGE
National Weather Service Riverton WY
540 AM MST Tue Dec 13 2022

WYZ026-027-131345-
/O.EXP.KRIW.WW.Y.0030.000000T0000Z-221213T1300Z/
Upper Green River Basin-South Lincoln County-
Including the cities of La Barge, Big Piney, Farson, Kemmerer, 
and Cokeville
540 AM MST Tue Dec 13 2022

...WINTER WEATHER ADVISORY WILL EXPIRE AT 6 AM MST EARLY THIS
MORNING...

The snow continues to taper off across the Upper Green River
Basin, and southern Lincoln County. Additional snowfall
accumulations will be under a half an inch. Thus the winter
weather advisory will be allowed to expire at 6 AM.

$$

WYZ010-132300-
/O.CON.KRIW.BZ.W.0002.000000T0000Z-221215T0000Z/
Northeast Johnson County-
Including the city of Buffalo
540 AM MST Tue Dec 13 2022

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 5 PM MST WEDNESDAY...

* WHAT...Blizzard conditions. Additional snow accumulations of 4 
  to 8 inches. Northwest winds gusting as high as 60 mph.

* WHERE...Northern Johnson County.

* WHEN...Until 5 PM Wednesday.

* IMPACTS...Travel will be very difficult to impossible through 
  the day Wednesday. Snow and blowing snow will result in 
  whiteout conditions at times. This includes Interstate 25 and 
  Interstate 90. Road closures are likely in rural areas.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Travel should be restricted to emergencies only. If you must
travel, have a winter survival kit with you. If you get stranded,
stay with your vehicle.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ020-022-132300-
/O.CON.KRIW.WS.W.0014.000000T0000Z-221215T0000Z/
Natrona County Lower Elevations-Casper Mountain-
Including the city of Casper
540 AM MST Tue Dec 13 2022

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST
WEDNESDAY...

* WHAT...Periods of snow, heavy at times. Additional snow 
  accumulations of 4 to 8 inches in the lower elevations, and 10 
  to 14 inches in the mountains. Winds gusting as high as 40 mph.

* WHERE...Natrona County Lower Elevations and Casper Mountain.

* WHEN...Until 5 PM Wednesday. The heaviest snow will occur 
  today.

* IMPACTS...Travel could be very difficult to impossible on 
  rural areas, and any roads on Casper Mountain. Road closures 
  and flight delays are likely.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ011-132300-
/O.CON.KRIW.WS.W.0014.000000T0000Z-221215T0000Z/
Southeast Johnson County-
Including the city of Kaycee
540 AM MST Tue Dec 13 2022

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST
WEDNESDAY...

* WHAT...Periods of snow, heavy at times. Additional snow 
  accumulations of 4 to 8 inches. Winds gusting as high as 45 
  mph.

* WHERE...Southern Johnson County.

* WHEN...Until 5 PM Wednesday.

* IMPACTS...Travel could be very difficult to impossible. 
  Blowing snow could significantly reduce visibility to near 
  whiteout conditions, including on Interstate 25. Road closures 
  are likely.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ005-007-132300-
/O.CON.KRIW.WS.W.0014.000000T0000Z-221214T1300Z/
Southwest Big Horn Basin-Owl Creek and Bridger Mountains-
Including the city of Thermopolis
540 AM MST Tue Dec 13 2022

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MST
WEDNESDAY...

* WHAT...Periods of snow, moderate at times. Additional snow 
  accumulations of 2 to 4 inches in the lower elevations, and 4 
  to 8 inches in the mountains. Winds gusting as high as 50 mph 
  in the mountains.

* WHERE...Southwest Big Horn Basin and Owl Creek and Bridger 
  Mountains.

* WHEN...Until 6 AM Wednesday. The heaviest snow will occur 
  through noon.

* IMPACTS...Travel could be very difficult. Blowing and drifting 
  of snow are possible, which would result in severely reduced 
  visibility at times, including through Wind River Canyon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ019-132300-
/O.CON.KRIW.WS.W.0014.000000T0000Z-221214T1300Z/
Green Mountains and Rattlesnake Range-
Including the city of Jeffrey City
540 AM MST Tue Dec 13 2022

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MST
WEDNESDAY...

* WHAT...Periods of snow, heavy at times. Additional snow 
  accumulations of 3 to 6 inches. Winds gusting as high as 45 
  mph.

* WHERE...Green Mountains and Rattlesnake Range.

* WHEN...Until 6 AM Wednesday. The heaviest snow will occur 
  through early afternoon.

* IMPACTS...Plan on difficult travel conditions. Blowing and 
  drifting snow is likely, which would reduce visibility to near 
  whiteout conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ030-132300-
/O.CON.KRIW.WS.W.0014.000000T0000Z-221214T1300Z/
East Sweetwater County-
Including the city of Wamsutter
540 AM MST Tue Dec 13 2022

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MST
WEDNESDAY...

* WHAT...Periods of snow, moderate at times. Additional snow 
  accumulations of 2 to 4 inches.

* WHERE...East Sweetwater County.

* WHEN...Until 6 AM Wednesday. The heaviest snow will occur 
  through today.

* IMPACTS...Travel will be very difficult including along 
  Interstate 80.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ015-017-018-132300-
/O.CON.KRIW.WS.W.0014.000000T0000Z-221214T1300Z/
Wind River Mountains East-Wind River Basin-Lander Foothills-
Including the cities of Riverton, Shoshoni, and Lander
540 AM MST Tue Dec 13 2022

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MST
WEDNESDAY...

* WHAT...Periods of snow, moderate at times. Additional snow 
  accumulations of 2 to 4 inches with isolated higher amounts in 
  the Lander Foothills and in adjacent mountains. Winds gusting 
  as high as 35 mph.

* WHERE...Wind River Basin, Lander Foothills, and eastern slopes 
  of the Wind River Mountains.

* WHEN...Until 6 AM Wednesday. The heaviest snow will occur 
  through early afternoon.

* IMPACTS...Plan on difficult travel conditions, including over 
  South Pass. Blowing and drifting snow is possible, which would 
  severely reduce visibility. Road closures and flight delays 
  are possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ006-132300-
/O.CON.KRIW.WW.Y.0030.000000T0000Z-221214T1300Z/
Southeast Big Horn Basin-
Including the cities of Ten Sleep and Worland
540 AM MST Tue Dec 13 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MST
WEDNESDAY...

* WHAT...Periods of snow, moderate at times. Additional snow 
  accumulations of 1 to 3 inches.

* WHERE...Southeast Big Horn Basin including Ten Sleep and 
  Worland.

* WHEN...Until 6 AM Wednesday. The heaviest snow will occur this 
  morning.

* IMPACTS...Plan on wintry driving conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ008-009-132300-
/O.CON.KRIW.WW.Y.0030.000000T0000Z-221214T1300Z/
Bighorn Mountains West-Bighorn Mountains Southeast-
540 AM MST Tue Dec 13 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MST
WEDNESDAY...

* WHAT...Periods of snow. Additional snow accumulations of 3 to 
  6 inches. Winds gusting as high as 40 mph.

* WHERE...Bighorn Mountains.

* WHEN...Until 6 AM Wednesday. The heaviest snow will occur 
  through early afternoon.

* IMPACTS...Travel could be difficult over mountain passes. 
  Blowing and drifting of snow are possible and would severely 
  limit visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ016-132300-
/O.CON.KRIW.WW.Y.0030.000000T0000Z-221214T0600Z/
Upper Wind River Basin-
Including the city of Dubois
540 AM MST Tue Dec 13 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...

* WHAT...Snow. Additional snow accumulations of 1 to 2 inches.

* WHERE...Upper Wind River Basin.

* WHEN...Until 11 PM Tuesday. The heaviest and bulk of the snow 
  will occur this morning.

* IMPACTS...Plan on slippery road conditions and reduced 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ003-132300-
/O.CON.KRIW.WW.Y.0030.000000T0000Z-221214T0000Z/
Cody Foothills-
Including the cities of Clark, Cody, and Meeteetse
540 AM MST Tue Dec 13 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...

* WHAT...Snow. Additional snow accumulations of 1 to 2 inches 
  Winds gusting as high as 40 mph.

* WHERE...Cody Foothills.

* WHEN...Until 5 PM Tuesday. The heaviest snow will occur this 
  morning.

* IMPACTS...Travel could be very difficult in rural areas. 
  Blowing and drifting of snow is possible and would severely 
  limit visibilities at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ028-029-132300-
/O.CON.KRIW.WW.Y.0030.000000T0000Z-221214T0600Z/
Rock Springs and Green River-Flaming Gorge-
Including the cities of Rock Springs and Green River
540 AM MST Tue Dec 13 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...

* WHAT...Snow. Additional snow accumulations of 1 to 3 inches. 
  Winds gusting as high as 40 mph this evening.

* WHERE...Rock Springs and Green River and Flaming Gorge.

* WHEN...Until 11 PM Tuesday.

* IMPACTS...Travel could be difficult, including on Interstate 
  80. Blowing and drifting of snow are possible with limited 
  visibility at times especially this evening as west winds 
  increase.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

Team Riverton/21
109 
WWUS45 KRIW 132249
WSWRIW

URGENT - WINTER WEATHER MESSAGE
National Weather Service Riverton WY
349 PM MST Tue Dec 13 2022

WYZ016-140000-
/O.CAN.KRIW.WW.Y.0030.000000T0000Z-221214T0600Z/
Upper Wind River Basin-
Including the city of Dubois
349 PM MST Tue Dec 13 2022

...WINTER WEATHER ADVISORY IS CANCELLED...

Snow has mostly ended across the area. The Winter Weather Advisory
is no longer in effect.

$$

WYZ003-140000-
/O.CAN.KRIW.WW.Y.0030.000000T0000Z-221214T0000Z/
Cody Foothills-
Including the cities of Clark, Cody, and Meeteetse
349 PM MST Tue Dec 13 2022

...WINTER WEATHER ADVISORY IS CANCELLED...

Snow has mostly ended across the area. The Winter Weather Advisory
is no longer in effect.

$$

WYZ010-140600-
/O.CON.KRIW.BZ.W.0002.000000T0000Z-221215T0000Z/
Northeast Johnson County-
Including the city of Buffalo
349 PM MST Tue Dec 13 2022

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 5 PM MST WEDNESDAY...

* WHAT...Blizzard conditions. Additional snow accumulations of 3
  to 6 inches, with additional amounts up to 8 inches across far
  northern and eastern areas. Winds gusting as high as 50 mph.

* WHERE...Northern Johnson County.

* WHEN...Until 5 PM MST Wednesday.

* IMPACTS...Travel will be very difficult to impossible through
  the day Wednesday. Snow and blowing snow will result in whiteout
  conditions at times. This includes Interstate 25 and Interstate
  90. Road closures are likely in rural areas.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Travel should be restricted to emergencies only. If you must
travel, have a winter survival kit with you. If you get stranded,
stay with your vehicle.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ020-022-140600-
/O.CON.KRIW.WS.W.0014.000000T0000Z-221215T0000Z/
Natrona County Lower Elevations-Casper Mountain-
Including the city of Casper
349 PM MST Tue Dec 13 2022

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST
WEDNESDAY...

* WHAT...Heavy snow. Additional snow accumulations of up to 10
  inches in northeastern Natrona County. Additional accumulation 
  of 3 to 6 inches elsewhere. Winds gusting as high as 40 mph.

* WHERE...Natrona County Lower Elevations and Casper Mountain.

* WHEN...Until 5 PM MST Wednesday.

* IMPACTS...Travel could be very difficult to impossible on rural
  areas, and any roads on Casper Mountain.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ011-140600-
/O.CON.KRIW.WS.W.0014.000000T0000Z-221215T0000Z/
Southeast Johnson County-
Including the city of Kaycee
349 PM MST Tue Dec 13 2022

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST
WEDNESDAY...

* WHAT...Heavy snow. Additional snow accumulations of 3 to 6
  inches, with higher amounts across far eastern Johnson County. 
  Winds gusting as high as 45 mph.

* WHERE...Southern Johnson County.

* WHEN...Until 5 PM MST Wednesday.

* IMPACTS...Travel could be very difficult to impossible. Blowing
  snow could significantly reduce visibility to near whiteout
  conditions, including on Interstate 25. Road closures are
  likely.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ005-007-140600-
/O.CON.KRIW.WS.W.0014.000000T0000Z-221214T1300Z/
Southwest Big Horn Basin-Owl Creek and Bridger Mountains-
Including the city of Thermopolis
349 PM MST Tue Dec 13 2022

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MST
WEDNESDAY...

* WHAT...Snow. Additional snow accumulations of up to two inches.
  Winds gusting as high as 40 mph.

* WHERE...Southwest Big Horn Basin and Owl Creek and Bridger 
  Mountains.

* WHEN...Until 6 AM MST Wednesday.

* IMPACTS...Travel could be very difficult. Blowing and drifting
  of snow is possible, which would result in severely reduced 
  visibility at times, including through Wind River Canyon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ019-140600-
/O.CON.KRIW.WS.W.0014.000000T0000Z-221214T1300Z/
Green Mountains and Rattlesnake Range-
Including the city of Jeffrey City
349 PM MST Tue Dec 13 2022

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MST
WEDNESDAY...

* WHAT...Snow. Additional snow accumulations of up to two inches.
  Winds gusting as high as 40 mph.

* WHERE...Green Mountains and Rattlesnake Range.

* WHEN...Until 6 AM MST Wednesday.

* IMPACTS...Plan on difficult travel conditions. Blowing and
  drifting snow is likely, which would reduce visibility to near
  whiteout conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ030-140600-
/O.CON.KRIW.WS.W.0014.000000T0000Z-221214T1300Z/
East Sweetwater County-
Including the city of Wamsutter
349 PM MST Tue Dec 13 2022

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MST
WEDNESDAY...

* WHAT...Snow. Additional snow accumulations of up to two inches 
  across far eastern Sweetwater County. Winds gusting as high as 
  40 mph.

* WHERE...East Sweetwater County.

* WHEN...Until 6 AM MST Wednesday.

* IMPACTS...Travel will be very difficult including along
  Interstate 80.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ015-017-018-140600-
/O.CON.KRIW.WS.W.0014.000000T0000Z-221214T1300Z/
Wind River Mountains East-Wind River Basin-Lander Foothills-
Including the cities of Riverton, Shoshoni, and Lander
349 PM MST Tue Dec 13 2022

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MST
WEDNESDAY...

* WHAT...Snow. Additional snow accumulations of up to one inch.

* WHERE...Wind River Basin, Lander Foothills, and eastern slopes 
  of the Wind River Mountains.

* WHEN...Until 6 AM MST Wednesday.

* IMPACTS...Plan on difficult travel conditions, including over
  South Pass. Blowing and drifting snow is possible, which would
  severely reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ006-140600-
/O.CON.KRIW.WW.Y.0030.000000T0000Z-221214T1300Z/
Southeast Big Horn Basin-
Including the cities of Ten Sleep and Worland
349 PM MST Tue Dec 13 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MST
WEDNESDAY...

* WHAT...Snow. Additional snow accumulations of up to one inch.

* WHERE...Southeast Big Horn Basin including Ten Sleep and 
  Worland.

* WHEN...Until 6 AM MST Wednesday.

* IMPACTS...Plan on wintry driving conditions.
  PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ008-009-140600-
/O.CON.KRIW.WW.Y.0030.000000T0000Z-221214T1300Z/
Bighorn Mountains West-Bighorn Mountains Southeast-
349 PM MST Tue Dec 13 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MST
WEDNESDAY...

* WHAT...Snow. Additional snow accumulations of up to 6 inches. 
  Winds gusting as high as 45 mph.

* WHERE...Bighorn Mountains.

* WHEN...Until 6 AM MST Wednesday.

* IMPACTS...Travel could be difficult over mountain passes.
  Blowing and drifting of snow are possible and would severely
  limit visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ028-029-140600-
/O.CON.KRIW.WW.Y.0030.000000T0000Z-221214T0600Z/
Rock Springs and Green River-Flaming Gorge-
Including the cities of Rock Springs and Green River
349 PM MST Tue Dec 13 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...

* WHAT...Snow. Additional snow accumulations of up to one inch. 
  Winds gusting as high as 40 mph.

* WHERE...Rock Springs and Green River and Flaming Gorge.

* WHEN...Until 11 PM MST this evening.

* IMPACTS...Travel could be difficult, including on Interstate 80.
  Blowing and drifting of snow are possible with limited
  visibility at times especially this evening as west winds
  increase.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/riw
141 
WWUS45 KRIW 140128
WSWRIW

URGENT - WINTER WEATHER MESSAGE
National Weather Service Riverton WY
628 PM MST Tue Dec 13 2022

WYZ005-007-015-017-018-140230-
/O.CAN.KRIW.WS.W.0014.000000T0000Z-221214T1300Z/
Southwest Big Horn Basin-Owl Creek and Bridger Mountains-
Wind River Mountains East-Wind River Basin-Lander Foothills-
Including the cities of Thermopolis, Riverton, Shoshoni, 
and Lander
628 PM MST Tue Dec 13 2022

...WINTER STORM WARNING IS CANCELLED...

Steady snow has ended and any leftover snow showers will leave 
only light accumulation.

$$

WYZ006-140230-
/O.CAN.KRIW.WW.Y.0030.000000T0000Z-221214T1300Z/
Southeast Big Horn Basin-
Including the cities of Ten Sleep and Worland
628 PM MST Tue Dec 13 2022

...WINTER WEATHER ADVISORY IS CANCELLED...

Steady snow has ended and any additional snow showers will leave
only light accumulation.

$$

WYZ028-029-140230-
/O.CAN.KRIW.WW.Y.0030.000000T0000Z-221214T0600Z/
Rock Springs and Green River-Flaming Gorge-
Including the cities of Rock Springs and Green River
628 PM MST Tue Dec 13 2022

...WINTER WEATHER ADVISORY IS CANCELLED...

Steady snow has ended and any additional snow showers will leave
only light accumulation.

$$

WYZ010-141300-
/O.CON.KRIW.BZ.W.0002.000000T0000Z-221215T0000Z/
Northeast Johnson County-
Including the city of Buffalo
628 PM MST Tue Dec 13 2022

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 5 PM MST WEDNESDAY...

* WHAT...Blizzard conditions. Additional snow accumulations of 3
  to 5 inches. Winds gusting as high as 50 mph.

* WHERE...Northern Johnson County.

* WHEN...Until 5 PM MST Wednesday.

* IMPACTS...Travel will be very difficult to impossible through 
  the day Wednesday. Snow and blowing snow will result in 
  whiteout conditions at times. This includes Interstate 25 and 
  Interstate 90. Road closures are likely in rural areas.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Travel should be restricted to emergencies only. If you must
travel, have a winter survival kit with you. If you get stranded,
stay with your vehicle.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ020-022-141300-
/O.CON.KRIW.WS.W.0014.000000T0000Z-221215T0000Z/
Natrona County Lower Elevations-Casper Mountain-
Including the city of Casper
628 PM MST Tue Dec 13 2022

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST
WEDNESDAY...

* WHAT...Heavy snow. Additional snow accumulations of up to 6
  inches in northeastern Natrona County. Additional accumulation
  of 2 to 4 inches around Casper; up to 6 inches on Casper
  Mountain. Winds gusting as high as 40 mph.

* WHERE...Natrona County Lower Elevations and Casper Mountain.

* WHEN...Until 5 PM MST Wednesday.

* IMPACTS...Travel could be very difficult to impossible on 
  rural areas, and any roads on Casper Mountain.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ011-141300-
/O.CON.KRIW.WS.W.0014.000000T0000Z-221215T0000Z/
Southeast Johnson County-
Including the city of Kaycee
628 PM MST Tue Dec 13 2022

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST
WEDNESDAY...

* WHAT...Heavy snow. Additional snow accumulations of 2 to 4 
  inches, with higher amounts across far eastern Johnson County. 
  Winds gusting as high as 45 mph.

* WHERE...Southern Johnson County.

* WHEN...Until 5 PM MST Wednesday.

* IMPACTS...Travel could be very difficult to impossible. 
  Blowing snow could significantly reduce visibility to near 
  whiteout conditions, including on Interstate 25. Road closures 
  are likely.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ019-141300-
/O.CON.KRIW.WS.W.0014.000000T0000Z-221214T1300Z/
Green Mountains and Rattlesnake Range-
Including the city of Jeffrey City
628 PM MST Tue Dec 13 2022

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MST
WEDNESDAY...

* WHAT...Snow. Additional snow accumulations of up to two 
  inches. Winds gusting as high as 40 mph.

* WHERE...Green Mountains and Rattlesnake Range.

* WHEN...Until 6 AM MST Wednesday.

* IMPACTS...Plan on difficult travel conditions. Blowing and 
  drifting snow is likely, which would reduce visibility to near 
  whiteout conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ030-141300-
/O.CON.KRIW.WS.W.0014.000000T0000Z-221214T1300Z/
East Sweetwater County-
Including the city of Wamsutter
628 PM MST Tue Dec 13 2022

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MST
WEDNESDAY...

* WHAT...Snow. Additional snow accumulations of up to two inches 
  across far eastern Sweetwater County. Winds gusting as high as 
  40 mph.

* WHERE...East Sweetwater County.

* WHEN...Until 6 AM MST Wednesday.

* IMPACTS...Travel will be very difficult including along 
  Interstate 80.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ008-009-141300-
/O.CON.KRIW.WW.Y.0030.000000T0000Z-221214T1300Z/
Bighorn Mountains West-Bighorn Mountains Southeast-
628 PM MST Tue Dec 13 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MST
WEDNESDAY...

* WHAT...Snow. Additional snow accumulations 3 to 5 inches;
  especially north of Powder River Pass. Winds gusting as high as
  45 mph.

* WHERE...Bighorn Mountains.

* WHEN...Until 6 AM MST Wednesday.

* IMPACTS...Travel could be difficult over mountain passes. 
  Blowing and drifting of snow are possible and would severely 
  limit visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/riw
073 
WWUS45 KRIW 140830
WSWRIW

URGENT - WINTER WEATHER MESSAGE
National Weather Service Riverton WY
130 AM MST Wed Dec 14 2022

WYZ010-150000-
/O.CAN.KRIW.BZ.W.0002.000000T0000Z-221215T0000Z/
/O.NEW.KRIW.WW.Y.0031.221214T0830Z-221215T1200Z/
Northeast Johnson County-
Including the city of Buffalo
130 AM MST Wed Dec 14 2022

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 5 AM MST THURSDAY...
...BLIZZARD WARNING IS CANCELLED...

* WHAT...Snow and blowing snow. Additional snowfall accumulations
  of 1 to 3 inches. Winds gusting as high as 30 to 40 mph.

* WHERE...Northeast Johnson County.

* WHEN...Until 5 AM MST Thursday.

* IMPACTS...Travel could be difficult. Patchy blowing snow could
  reduce visibility to 1/2 mile in open and rural areas. The 
  hazardous conditions could impact the morning or evening 
  commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ020-022-150000-
/O.CAN.KRIW.WS.W.0014.000000T0000Z-221215T0000Z/
/O.NEW.KRIW.WW.Y.0031.221214T0830Z-221215T0000Z/
Natrona County Lower Elevations-Casper Mountain-
Including the city of Casper
130 AM MST Wed Dec 14 2022

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...
...WINTER STORM WARNING IS CANCELLED...

* WHAT...Snow. Additional snow accumulations of 1 to 2 inches
  around Casper and 2 to 4 inches on Casper Mountain. Winds 
  gusting as high as 35 mph.

* WHERE...Natrona County Lower Elevations and Casper Mountain.

* WHEN...Until 5 PM MST this afternoon.

* IMPACTS...Plan on slippery road conditions. Patchy blowing snow
  could reduce visibility. The hazardous conditions could impact
  the morning or evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ011-150000-
/O.CAN.KRIW.WS.W.0014.000000T0000Z-221215T0000Z/
/O.NEW.KRIW.WW.Y.0031.221214T0830Z-221215T0000Z/
Southeast Johnson County-
Including the city of Kaycee
130 AM MST Wed Dec 14 2022

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...
...WINTER STORM WARNING IS CANCELLED...

* WHAT...Snow. Additional snow accumulations of 1 to 3 inches.
  Winds gusting as high as 20 to 30 mph.

* WHERE...Southeast Johnson County.

* WHEN...Until 5 PM MST this afternoon.

* IMPACTS...Plan on slippery road conditions. Patchy blowing snow
  could reduce visibility. The hazardous conditions could impact 
  the morning or evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ019-030-140930-
/O.CAN.KRIW.WS.W.0014.000000T0000Z-221214T1300Z/
Green Mountains and Rattlesnake Range-East Sweetwater County-
Including the cities of Jeffrey City and Wamsutter
130 AM MST Wed Dec 14 2022

...WINTER STORM WARNING IS CANCELLED...

Heaviest snow has ended conditions will continue to improve. Light
snow showers are possible through late morning with little to no
additional accumulations.

$$

WYZ008-009-140930-
/O.CAN.KRIW.WW.Y.0030.000000T0000Z-221214T1300Z/
Bighorn Mountains West-Bighorn Mountains Southeast-
130 AM MST Wed Dec 14 2022

...WINTER WEATHER ADVISORY IS CANCELLED...

Heaviest snow has ended conditions will continue to improve. Light
snow showers are possible through late morning with little to no
additional accumulations.


$$

For more information from the National Weather Service visit
https://weather.gov/riw

What forecasters said that day

The local office's own words before this blizzard warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Riverton, WY wrote its last area forecast discussion before this blizzard warning went out at Dec 12, 4:15 AM MST, 5 hours 6 minutes earlier.

Area forecast discussion, Dec 12, 4:15 AM MST, 5 hours 6 minutes before
Area Forecast Discussion
National Weather Service Riverton WY
415 AM MST Mon Dec 12 2022

.SHORT TERM...(Today through Wednesday night)
Issued at 415 AM MST Mon Dec 12 2022

Water vapor imagery shows two upper lows in the overall longwave
trough. There is one over south-central California and the other
one over southern Idaho. These features will slowly push eastward
today, before jumping the Continental Divide tonight with a strong
surface low developing over eastern Colorado. A cold front will
push across the region today. Areas of snow across the west will
continue today, but quickly taper off as the system crosses the
Divide. Snow will breakout east of the Divide by around midday
from a combination of strong quasi-geostrophic forcing, and some
isentropic upglide over the front today. Tonight and Tuesday, the
forcing will transition to more upslope flow, and wrap around
moisture from this slow moving upper low. The best upslope flow
will be across Lander Foothills and southern Bighorn Basin
tonight, and then over Natrona County late tonight into Tuesday.
The flow backs to the northwest Tuesday night which should result
in the snow becoming lighter around the Casper area. The snow on
Wednesday is expected over the far east, but should be mainly
light. Models have generally trended with slightly more snow, and
have upgraded the Green Mountains and Rattlesnake Range (zone 19),
and added eastern Sweetwater County into a warning. Have extended
the far east through the day Wednesday for the additional light
snow, and for the strong winds over Johnson County which could
result in blizzard conditions. Northern Johnson County might need
to be upgraded to a blizzard warning, but will let the day shift
take another look at it.

.LONG TERM...(Thursday through Sunday)
Issued at 415 AM MST Mon Dec 12 2022

Snow showers will linger Thursday mainly over northern portions and
Natrona County. Snow showers may be enhanced as a shortwave trough
will try to make its way down from Canada. A ridge looks to develop
over the PACNW which will help guide in potentially the coldest air
of the season so far behind the shortwave. Starting Friday night
overnight lows look to drop well below 0 especially if there is more
than a few inches of snow depth. Highs during the day
Saturday/Sunday may struggle to get out of the single digits for
some. The cold arctic air looks to remain over the region with well
below normal highs/lows going into the start of next week.

&&

.AVIATION...(For the 12Z TAFS through 12Z Tuesday morning)
Issued at 415 AM MST Mon Dec 12 2022

East of the Divide...KCOD/KCPR/KLND/KRIW/KWRL Terminals

VFR conditions will occur through 18Z. Snow develops over the region
between 18Z and 00Z, and the snow continues through the end of the
period. MVFR to IFR conditions will be prevailing after 00Z with
local LIFR conditions. Mountain obscuration will increase today.
Please see individual terminal forecasts for more details.

West of the Divide...KBPI/KJAC/KPNA/KRKS Terminals

Snow will occur over the area through 00Z, then slowly taper off
through 06Z. MVFR to IFR conditions will prevail with local LIFR
conditions. Some improvement to VFR conditions will occur
after 06Z Tue. Frequent mountain obscuration will be observed.

Please see the Aviation Weather Center and/or CWSU ZDV and ZLC for
the latest information on icing and turbulence forecasts.

&&

.FIRE WEATHER...
Issued AT 415 AM MST Mon Dec 12 2022

Areas of snow over the west will taper off tonight, while snow
breaks out east of the Divide by early afternoon. The snow over
the east and southern fire zones will continue through Tuesday
night into the day Wednesday. Several inches of snow are expected
with the heaviest snowfall from eastern Sweetwater County north
into Johnson County including Natrona County where 6 to 12 inches
of snow is expected. Smoke dispersal will generally be poor over
the next couple of days.

&&

.RIW WATCHES/WARNINGS/ADVISORIES...
Winter Weather Advisory until 11 PM MST this evening for WYZ001-
012>014-023>025-027.

Winter Storm Warning from 3 PM this afternoon to 6 AM MST
Wednesday for WYZ005-007.

Winter Weather Advisory from 3 PM this afternoon to 6 AM MST
Wednesday for WYZ006-008-009.

Winter Storm Warning from 5 PM this afternoon to 5 PM MST
Wednesday for WYZ010-011-020-022.

Winter Weather Advisory from 5 PM this afternoon to 6 AM MST
Wednesday for WYZ015-017-018.

Winter Storm Warning from 5 PM this afternoon to 6 AM MST
Wednesday for WYZ019-030.

&&

SHORT TERM...Murrell
LONG TERM...Dziewaltowski
AVIATION...Murrell/Ross
FIRE WEATHER...Murrell
Hazardous weather outlook, Dec 12, 3:34 AM MST, 5 hours 47 minutes before
Hazardous Weather Outlook
National Weather Service Riverton WY
334 AM MST Mon Dec 12 2022

WYZ001>020-022>030-131300-
Yellowstone National Park-Absaroka Mountains-Cody Foothills-
North Big Horn Basin-Southwest Big Horn Basin-
Southeast Big Horn Basin-Owl Creek and Bridger Mountains-
Bighorn Mountains West-Bighorn Mountains Southeast-
Northeast Johnson County-Southeast Johnson County-
Teton and Gros Ventre Mountains-Jackson Hole-
Wind River Mountains West-Wind River Mountains East-
Upper Wind River Basin-Wind River Basin-Lander Foothills-
Green Mountains and Rattlesnake Range-
Natrona County Lower Elevations-Casper Mountain-Star Valley-
Salt River and Wyoming Ranges-Upper Green River Basin Foothills-
Upper Green River Basin-South Lincoln County-
Rock Springs and Green River-Flaming Gorge-East Sweetwater County-
334 AM MST Mon Dec 12 2022

...Winter Weather Advisories in effect over the west until 11
PM...

...Multiple Winter Weather highlights for areas east of the Divide
and southern areas Monday afternoon through Wednesday...

This Hazardous Weather Outlook is for Western and Central Wyoming.

.DAY ONE...Today and Tonight.

Significant snow over the west spreading east of the Divide.
Please see the winter weather statement for additional details.

.DAYS TWO THROUGH SEVEN...Tuesday through Saturday.

Tuesday...Light to moderate snow will continue over areas east of
the Divide and over the south. The heaviest snow occurring over
Johnson and Natrona counties. Light snow will remain possible over
western portions, but additional snowfall amounts expected to be
minimal.

Wednesday...Light snow will remain possible over portions of
Johnson and Natrona counties. Strong winds will be possible over
northern portions of Johnson County with significant blowing and
drifting snow.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions, according to standard operating procedures.

TEAM RIVERTON

In the hours before

Special weather statement, Dec 12, 3:26 AM MST, 5 hours 55 minutes before
Special Weather Statement
National Weather Service Riverton WY
326 AM MST Mon Dec 12 2022

WYZ003-004-122200-
Cody Foothills-North Big Horn Basin-
Including the cities of Clark, Cody, Meeteetse, Basin, Greybull,
Lovell, Powell, and Shell
326 AM MST Mon Dec 12 2022

...Accumulating Snow Monday Through Wednesday...

This is a special weather statement from the National Weather
Service in Riverton.

* WHAT...1 to 3 inches of snow. Gusty northerly wind of 30 to 45
  mph this afternoon and tonight will result in some blowing
  snow.

* WHERE...The northern Bighorn Basin and the Cody Foothills.

* WHEN...Monday afternoon through Wednesday.

* ADDITIONAL DETAILS...Travel will be impacted by snow. Slow down,
  as slick spots are likely with snow covered roads. Visibility
  will be reduced at times. Some drifting of snow is possible,
  especially along west to east oriented roads.

WYZ026-028-029-122200-
Upper Green River Basin-Rock Springs and Green River-
Flaming Gorge-
Including the cities of La Barge, Big Piney, Farson,
Rock Springs, and Green River
326 AM MST Mon Dec 12 2022

...Accumulating Snow tonight Through Wednesday...

This is a special weather statement from the National Weather
Service in Riverton.

* WHAT...1 to 3 inches of snow with localized higher amounts.

* WHERE...Upper Green River Basin and Western Sweetwater County.

* WHEN...Today through Wednesday.

* ADDITIONAL DETAILS...Travel will be impacted by snow. Slow down,
  as slick spots are likely with snow covered roads. Visibility
  will be reduced at times. Some drifting and blowing of snow are
  possible, especially for north to south oriented roads.

Team Riverton/21

Nearby

Blizzard Warnings in Wyoming, 2022Every blizzard warning in 2022

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.