Alert archive / Wyoming / Blizzard Warnings in 2020

Blizzard Warning 4, NWS Cheyenne, WY

February 7, 2020Albany County, Carbon County, Laramie County, Wyoming

NWS Cheyenne, WY issued this blizzard warning at Feb 7, 2020, 6:05 PM MST for Albany County, Carbon County, Laramie County, Wyoming. It took effect at Feb 7, 2020, 11:00 PM MST. It was in force for 9 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
Feb 7, 2020, 6:05 PM MST (01:05 UTC)
In effect from
Feb 7, 2020, 11:00 PM MST
Expired
Feb 8, 2020, 8:14 AM MST
In force
9 hr
Issued by
NWS Cheyenne, WY

Counties Albany County, WY, Carbon County, WY, Laramie County, WY

The radar

The Cheyenne radar (KCYS), 93 km from the middle of the area, began a volume at 01:09 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
Feb 8, 7:00 AM MSTSNOW 0.51 N Laramie, WYCOCORAHS STATION WY-AB-177 LARAMIE 0.8 N.
Feb 8, 7:00 AM MSTSNOW 0.52 N Laramie, WYCOCORAHS STATION WY-AB-45 LARAMIE 1.7 N.
Feb 8, 7:00 AM MSTSNOW 0.6Elk Mountain, WYCOCORAHS STATION WY-CR-18 ELK MOUNTAIN 0.3 SW.
Feb 8, 7:00 AM MSTSNOW 12 Ene Laramie, WYCOCORAHS STATION WY-AB-138 LARAMIE 1.8 ENE.
Feb 8, 7:00 AM MSTSNOW 1.23 Ese Laramie, WYCOCORAHS STATION WY-AB-98 LARAMIE 3.3 ESE.
Feb 8, 7:00 AM MSTSNOW 22 Ese Laramie, WYCOCORAHS STATION WY-AB-171 LARAMIE 2.5 ESE.
Feb 8, 7:00 AM MSTSNOW 23 Ese Buford, WYCO-OP OBSERVER STATION BFDW4 BUFORD 4 SE.
Feb 8, 7:00 AM MSTSNOW 3.41 Nw Centennial, WYCOCORAHS STATION WY-AB-108 CENTENNIAL 1.1 NNE.

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 00:00Z, 1.1 hours before the alert went out and 274 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 00:00Z on 2020-02-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Riverton, WY at 00:00Z on 2020-02-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 256 square meters per square second.1939587897117136Sfc1 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
1142 m above ground
0-6 km bulk shear
97 kt
0-1 km storm-relative helicity
256 m²/s²
0-3 km storm-relative helicity
352 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

358 
WWUS45 KCYS 080105
WSWCYS

URGENT - WINTER WEATHER MESSAGE
National Weather Service Cheyenne WY
605 PM MST Fri Feb 7 2020

...SIGNIFICANT TRAVEL IMPACTS WILL PERSIST ALONG AND WEST OF THE
LARAMIE RANGE THROUGH AT LEAST SATURDAY AFTERNOON...

WYZ111-080215-
/O.CAN.KCYS.WW.Y.0012.000000T0000Z-200208T1200Z/
Southwest Carbon County-
Including the city of Baggs
605 PM MST Fri Feb 7 2020

...WINTER WEATHER ADVISORY IS CANCELLED...

Snow has become very light across southwestern Carbon County this
evening and significant snow accumulations are no longer expected.
Therefore...the winter weather advisory has been cancelled.

$$

WYZ110-081200-
/O.NEW.KCYS.BZ.W.0004.200208T0600Z-200209T0000Z/
/O.EXT.KCYS.WS.W.0004.000000T0000Z-200208T0600Z/
North Snowy Range Foothills-
Including the cities of Arlington and Elk Mountain
605 PM MST Fri Feb 7 2020

...WINTER STORM WARNING NOW IN EFFECT UNTIL 11 PM MST THIS
EVENING...
...BLIZZARD WARNING IN EFFECT FROM 11 PM THIS EVENING TO 5 PM MST
SATURDAY...

* WHAT...For the Winter Storm Warning, heavy snow. Additional 
  snow accumulations of up to one inch. Winds gusting as high as 
  50 mph. For the Blizzard Warning, blizzard conditions 
  expected. Total snow accumulations of up to one inch. Winds 
  gusting as high as 70 mph.

* WHERE...Interstate 80 Corridor to include Arlington and Elk
  Mountain.

* WHEN...For the Winter Storm Warning, until 11 PM MST this 
  evening. For the Blizzard Warning, from 11 PM this evening to 
  5 PM MST Saturday.

* IMPACTS...Plan on slippery road conditions. Patchy blowing 
  snow could significantly reduce visibility. Very strong winds 
  could cause extensive tree damage.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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.

&&

$$

WYZ109-116-081200-
/O.NEW.KCYS.BZ.W.0004.200208T1200Z-200209T0000Z/
/O.CON.KCYS.WW.Y.0012.000000T0000Z-200208T1200Z/
Central Carbon County-South Laramie Range-
Including the cities of Rawlins, Buford, Pumpkin Vine, 
and Vedauwoo
605 PM MST Fri Feb 7 2020

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST
SATURDAY...
...BLIZZARD WARNING IN EFFECT FROM 5 AM TO 5 PM MST SATURDAY...

* WHAT...For the Blizzard Warning, blizzard conditions expected.
  Total snow accumulations of up to one inch. Dense freezing fog
  this evening over the Interstate 80 Summit before strong winds
  begin later this evening. Winds gusting as high as 65 mph. For 
  the Winter Weather Advisory, snow. Additional snow accumulations
  of up to one inch. Winds gusting as high as 55 mph.

* WHERE...Central Carbon County east of Rawlins to include the
  Interstate 80 Corridor from mile markers 222 to 235.
  description here

* WHEN...For the Blizzard Warning, from 5 AM to 5 PM MST 
  Saturday. For the Winter Weather Advisory, until 5 AM MST 
  Saturday.

* IMPACTS...Plan on slippery road conditions. Patchy blowing 
  snow could significantly reduce visibility. Strong winds could 
  cause tree damage.

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. 

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.

&&

$$

WYZ112-114-081200-
/O.CON.KCYS.WS.W.0004.000000T0000Z-200208T1200Z/
Sierra Madre Range-Snowy Range-
Including the cities of Centennial and Albany
605 PM MST Fri Feb 7 2020

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST
SATURDAY...

* WHAT...Heavy snow and blowing snow. Additional snow 
  accumulations of 6 to 12 inches, with locally higher amounts 
  possible on northwest facing slopes above 9000 feet. Wind 
  gusts up to 50 MPH.

* WHERE...Snowy and Sierra Madre Mountain Ranges.

* WHEN...Until 5 AM MST Saturday.

* IMPACTS...Mountain travel will be extremely difficult or 
  impossible due to icy, snow covered roads and near zero 
  visibilities in falling and blowing snow. Outdoor recreation 
  will be life threatening to those not prepared for severe 
  winter conditions. Hikers and snowmobilers can easily become 
  disoriented and lost. Frostbite and hypothermia can set in 
  quickly.

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.

&&

$$

WYZ113-081200-
/O.CON.KCYS.WS.W.0004.000000T0000Z-200208T1200Z/
Upper North Platte River Basin-
Including the cities of Saratoga and Encampment
605 PM MST Fri Feb 7 2020

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST
SATURDAY...

* WHAT...Snow and blowing snow. Additional snow accumulations of 
  2 to 6 inches. Wind gusts up to 40 mph.

* WHERE...Upper North Platte River Basin including Saratoga and 
  Encampment.

* WHEN...Until 5 AM MST Saturday.

* IMPACTS...Travel will be difficult or impossible due to icy, 
  snow packed roads and near zero visibilities in falling and 
  blowing snow.

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.

&&

$$

WYZ115-081200-
/O.CON.KCYS.WW.Y.0012.000000T0000Z-200208T1200Z/
Laramie Valley-
Including the cities of Bosler and Laramie
605 PM MST Fri Feb 7 2020

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST
SATURDAY...

* WHAT...Snow and blowing snow. Total snow accumulations of 1 to 
  3 inches. Wind gusts up to 40 MPH.

* WHERE...Laramie Valley including Laramie and Bosler.

* WHEN...Until 5 AM MST Saturday.

* IMPACTS...Travel will be difficult due to icy, snow covered 
  roads and periods of low visibility in falling and blowing 
  snow.

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.

&&

$$

WYZ117-081200-
/O.CON.KCYS.WW.Y.0012.000000T0000Z-200208T1200Z/
South Laramie Range Foothills-
Including the cities of Whitaker, Federal, and Horse Creek
605 PM MST Fri Feb 7 2020

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST
SATURDAY...

* WHAT...Occasional snow and blowing snow. Additional snow 
  accumulations of one to two inches. Winds gusting as high as 
  40 mph.

* WHERE...Central Carbon County, South Laramie Range and South 
  Laramie Range Foothills.

* WHEN...Until 5 AM MST Saturday.

* IMPACTS...Travel will be difficult due to icy, snow covered 
  roads and periods of low visibility in falling and blowing 
  snow.

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.

&&

$$
4 follow-up statements
658 
WWUS45 KCYS 080545
WSWCYS

URGENT - WINTER WEATHER MESSAGE
National Weather Service Cheyenne WY
1045 PM MST Fri Feb 7 2020

...SIGNIFICANT TRAVEL IMPACTS WILL PERSIST ALONG AND WEST OF THE
LARAMIE RANGE THROUGH AT LEAST SATURDAY AFTERNOON...

WYZ110-081200-
/O.EXP.KCYS.WS.W.0004.000000T0000Z-200208T0600Z/
/O.CON.KCYS.BZ.W.0004.200208T0600Z-200209T0000Z/
North Snowy Range Foothills-
Including the cities of Arlington and Elk Mountain
1045 PM MST Fri Feb 7 2020

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 5 PM MST SATURDAY...
...WINTER STORM WARNING WILL EXPIRE AT 11 PM MST THIS EVENING...

* WHAT...Blizzard conditions expected. Total snow accumulations 
  of up to one inch. Winds gusting as high as 70 mph.

* WHERE...Interstate 80 Corridor to include Arlington and Elk 
  Mountain.

* WHEN...11 PM this evening to 5 PM MST Saturday.

* IMPACTS...Plan on slippery road conditions. Patchy blowing 
  snow could significantly reduce visibility. Very strong winds 
  could cause extensive tree damage.

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.

&&

$$

WYZ109-116-081200-
/O.CON.KCYS.BZ.W.0004.200208T1200Z-200209T0000Z/
/O.CON.KCYS.WW.Y.0012.000000T0000Z-200208T1200Z/
Central Carbon County-South Laramie Range-
Including the cities of Rawlins, Buford, Pumpkin Vine, 
and Vedauwoo
1045 PM MST Fri Feb 7 2020

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST
SATURDAY...
...BLIZZARD WARNING REMAINS IN EFFECT FROM 5 AM TO 5 PM MST
SATURDAY...

* WHAT...For the Blizzard Warning, blizzard conditions expected.
  Total snow accumulations of up to one inch. Dense freezing fog
  this evening over the Interstate 80 Summit before strong winds
  begin later Saturday morning. Winds gusting as high as 65 mph. 
  For the Winter Weather Advisory, snow. Additional snow 
  accumulations of up to one inch. Winds gusting as high as 55 
  mph.

* WHERE...Central Carbon County east of Rawlins to include the 
  Interstate 80 Corridor from mile markers 222 to 235. 
  description here.

* WHEN...For the Blizzard Warning, from 5 AM to 5 PM MST 
  Saturday. For the Winter Weather Advisory, until 5 AM MST 
  Saturday.

* IMPACTS...Plan on slippery road conditions. Patchy blowing 
  snow could significantly reduce visibility. Strong winds could 
  cause tree damage.

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. 

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.

&&

$$

WYZ112-114-081200-
/O.CON.KCYS.WS.W.0004.000000T0000Z-200208T1200Z/
Sierra Madre Range-Snowy Range-
Including the cities of Centennial and Albany
1045 PM MST Fri Feb 7 2020

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST
SATURDAY...

* WHAT...Heavy snow and blowing snow. Additional snow 
  accumulations of 6 to 12 inches, with locally higher amounts 
  possible on northwest facing slopes above 9000 feet. Wind 
  gusts up to 50 MPH.

* WHERE...Snowy and Sierra Madre Mountain Ranges.

* WHEN...Until 5 AM MST Saturday.

* IMPACTS...Mountain travel will be extremely difficult or 
  impossible due to icy, snow covered roads and near zero 
  visibilities in falling and blowing snow. Outdoor recreation 
  will be life threatening to those not prepared for severe 
  winter conditions. Hikers and snowmobilers can easily become 
  disoriented and lost. Frostbite and hypothermia can set in 
  quickly.

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.

&&

$$

WYZ113-081200-
/O.CON.KCYS.WS.W.0004.000000T0000Z-200208T1200Z/
Upper North Platte River Basin-
Including the cities of Saratoga and Encampment
1045 PM MST Fri Feb 7 2020

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST
SATURDAY...

* WHAT...Snow and blowing snow. Additional snow accumulations of 
  2 to 6 inches. Wind gusts up to 40 mph.

* WHERE...Upper North Platte River Basin including Saratoga and 
  Encampment.

* WHEN...Until 5 AM MST Saturday.

* IMPACTS...Travel will be difficult or impossible due to icy, 
  snow packed roads and near zero visibilities in falling and 
  blowing snow.

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.

&&

$$

WYZ115-081200-
/O.CON.KCYS.WW.Y.0012.000000T0000Z-200208T1200Z/
Laramie Valley-
Including the cities of Bosler and Laramie
1045 PM MST Fri Feb 7 2020

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST
SATURDAY...

* WHAT...Snow and blowing snow. Total snow accumulations of 1 to 
  3 inches. Wind gusts up to 40 MPH.

* WHERE...Laramie Valley including Laramie and Bosler.

* WHEN...Until 5 AM MST Saturday.

* IMPACTS...Travel will be difficult due to icy, snow covered 
  roads and periods of low visibility in falling and blowing 
  snow.

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.

&&

$$

WYZ117-081200-
/O.CON.KCYS.WW.Y.0012.000000T0000Z-200208T1200Z/
South Laramie Range Foothills-
Including the cities of Whitaker, Federal, and Horse Creek
1045 PM MST Fri Feb 7 2020

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST
SATURDAY...

* WHAT...Occasional snow and blowing snow. Additional snow 
  accumulations of one to two inches. Winds gusting as high as 
  40 mph.

* WHERE...Central Carbon County, South Laramie Range and South 
  Laramie Range Foothills.

* WHEN...Until 5 AM MST Saturday.

* IMPACTS...Travel will be difficult due to icy, snow covered 
  roads and periods of low visibility in falling and blowing 
  snow.

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.

&&

$$
499 
WWUS45 KCYS 080935
WSWCYS

URGENT - WINTER WEATHER MESSAGE
National Weather Service Cheyenne WY
235 AM MST Sat Feb 8 2020

...SIGNIFICANT TRAVEL IMPACTS WILL PERSIST ALONG AND WEST OF THE
LARAMIE RANGE THROUGH SATURDAY AFTERNOON...

WYZ109-082100-
/O.CAN.KCYS.BZ.W.0004.200208T1200Z-200209T0000Z/
/O.EXT.KCYS.WW.Y.0012.000000T0000Z-200208T2100Z/
Central Carbon County-
Including the city of Rawlins
235 AM MST Sat Feb 8 2020

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 2 PM MST THIS
AFTERNOON...

* WHAT...Occasional snow and blowing snow. Additional snow
  accumulations 1 to 2 inches. Winds gusting as high as 50 mph.

* WHERE...Central Carbon County, including Rawlins.

* WHEN...Until 2 PM MST this afternoon.

* IMPACTS...Plan on slippery road conditions. Patchy blowing snow
  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.

&&

$$

WYZ113-081045-
/O.CAN.KCYS.WS.W.0004.000000T0000Z-200208T1200Z/
Upper North Platte River Basin-
Including the cities of Saratoga and Encampment
235 AM MST Sat Feb 8 2020

...WINTER STORM WARNING IS CANCELLED...

Steady snowfall has ended early this morning. Occasional snow
showers are possible through the day, but additional snow
accumulations should remain below one inch.

$$

WYZ115-081045-
/O.CAN.KCYS.WW.Y.0012.000000T0000Z-200208T1200Z/
Laramie Valley-
Including the cities of Bosler and Laramie
235 AM MST Sat Feb 8 2020

...WINTER WEATHER ADVISORY IS CANCELLED...

Steady snowfall has ended across the Laramie Valley. Occasional
snow flurries and patchy blowing snow is possible near the Snowy
Range today.

$$

WYZ116-082145-
/O.CON.KCYS.BZ.W.0004.200208T1200Z-200209T0000Z/
/O.CON.KCYS.WW.Y.0012.000000T0000Z-200208T1200Z/
South Laramie Range-
Including the cities of Buford, Pumpkin Vine, and Vedauwoo
235 AM MST Sat Feb 8 2020

...BLIZZARD WARNING FOR GROUND BLIZZARD CONDITIONS REMAINS IN 
EFFECT UNTIL 5 PM MST THIS AFTERNOON...

* WHAT...Blizzard conditions expected, mainly due to significant
  blowing snow. Total snow accumulations of up to one inch. Winds
  may gust as high as 65 mph. 

* WHERE...The southern Laramie Range, including the I-80 Summit.

* WHEN...For the Blizzard Warning, from 5 AM to 5 PM MST Saturday. 

* IMPACTS...Dangerous travel conditions with very low visibility
  near one quarter of a mile and strong wind gusts up to 65 mph.
  High blowoff or blowover risk for lightweight high profile 
  vehicles including campers. 

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.

&&

$$

WYZ110-082145-
/O.CON.KCYS.BZ.W.0004.000000T0000Z-200209T0000Z/
North Snowy Range Foothills-
Including the cities of Arlington and Elk Mountain
235 AM MST Sat Feb 8 2020

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...

* WHAT...Blizzard conditions expected. Total snow accumulations of
  up to one inch. Winds gusting as high as 65 mph.

* WHERE...Interstate 80 Corridor to include Arlington and Elk 
  Mountain.

* WHEN...Until 5 PM MST Saturday.

* IMPACTS...Dangerous travel conditions with very low visibility
  near one quarter of a mile and strong wind gusts up to 65 mph.
  High blowoff or blowover risk for lightweight high profile 
  vehicles including campers. 

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.

&&

$$

WYZ112-114-081200-
/O.CON.KCYS.WS.W.0004.000000T0000Z-200208T1200Z/
Sierra Madre Range-Snowy Range-
Including the cities of Centennial and Albany
235 AM MST Sat Feb 8 2020

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST EARLY
THIS MORNING...

* WHAT...Heavy snow and blowing snow, ending this morning. 

* WHERE...Snowy and Sierra Madre Mountain Ranges.

* WHEN...Until 5 AM MST Saturday.

* IMPACTS...Mountain travel will be extremely difficult or 
  impossible due to icy, snow covered roads and near zero 
  visibilities in falling and blowing snow. Outdoor recreation 
  will be life threatening to those not prepared for severe 
  winter conditions. Hikers and snowmobilers can easily become 
  disoriented and lost. Frostbite and hypothermia can set in 
  quickly.

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.

&&

$$

WYZ117-081200-
/O.CON.KCYS.WW.Y.0012.000000T0000Z-200208T1200Z/
South Laramie Range Foothills-
Including the cities of Whitaker, Federal, and Horse Creek
235 AM MST Sat Feb 8 2020

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST EARLY
THIS MORNING...

* WHAT...Occasional snow and blowing snow. Additional snow
  accumulations up to one inch. Winds gusting as high as 40 mph.

* WHERE...South Laramie Range Foothills just west of Cheyenne.

* WHEN...Until 5 AM MST Saturday.

* IMPACTS...Travel will be difficult due to icy, snow covered 
  roads and periods of low visibility in falling and blowing 
  snow.

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.

&&

$$
253 
WWUS45 KCYS 081138
WSWCYS

URGENT - WINTER WEATHER MESSAGE
National Weather Service Cheyenne WY
438 AM MST Sat Feb 8 2020

...SIGNIFICANT TRAVEL IMPACTS WILL PERSIST ALONG AND WEST OF THE
LARAMIE RANGE THROUGH SATURDAY AFTERNOON...

WYZ112-114-081245-
/O.EXP.KCYS.WS.W.0004.000000T0000Z-200208T1200Z/
Sierra Madre Range-Snowy Range-
Including the cities of Centennial and Albany
438 AM MST Sat Feb 8 2020

...WINTER STORM WARNING WILL EXPIRE AT 5 AM MST EARLY THIS
MORNING...

Most of the steady heavy snowfall has come to an end early this
morning across the higher mountain ranges of southeast Wyoming.
Scattered snow showers are expected for the rest of the morning
and into early this afternoon with additional snow accumulations
of an inch or so. More snow is possible late this afternoon and
into tonight. 

$$

WYZ116-082330-
/O.EXP.KCYS.WW.Y.0012.000000T0000Z-200208T1200Z/
/O.CON.KCYS.BZ.W.0004.200208T1200Z-200209T0000Z/
South Laramie Range-
Including the cities of Buford, Pumpkin Vine, and Vedauwoo
438 AM MST Sat Feb 8 2020

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...

* WHAT...Blizzard conditions expected. Total snow accumulations 
  of up to one inch. Winds gusting as high as 55 mph.

* WHERE...The southern Laramie Range, including the I-80 Summit.

* WHEN...For the Blizzard Warning, from 5 AM to 5 PM MST 
  Saturday.

* IMPACTS...Plan on slippery road conditions. Patchy blowing 
  snow could significantly reduce visibility. Strong winds could 
  cause tree damage.

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.

&&

$$

WYZ117-081245-
/O.EXP.KCYS.WW.Y.0012.000000T0000Z-200208T1200Z/
South Laramie Range Foothills-
Including the cities of Whitaker, Federal, and Horse Creek
438 AM MST Sat Feb 8 2020

...WINTER WEATHER ADVISORY WILL EXPIRE AT 5 AM MST EARLY THIS
MORNING...

Light snow has ended early this morning with no additional snow
accumulations expected this morning. Another band of snow is
possible this evening as the next cold front moves southeast
across the area this afternoon. 

$$

WYZ110-082330-
/O.CON.KCYS.BZ.W.0004.000000T0000Z-200209T0000Z/
North Snowy Range Foothills-
Including the cities of Arlington and Elk Mountain
438 AM MST Sat Feb 8 2020

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...

* WHAT...Blizzard conditions expected. Additional snow
  accumulations up to one inch. Winds gusting as high as 65 mph.

* WHERE...Interstate 80 Corridor to include Arlington and Elk 
  Mountain.

* WHEN...Until 5 PM MST Saturday.

* IMPACTS...Dangerous travel conditions with very low visibility 
  near one quarter of a mile and strong wind gusts up to 65 mph. 
  High blowoff or blowover risk for lightweight high profile 
  vehicles including campers.

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.

&&

$$

WYZ109-082100-
/O.CON.KCYS.WW.Y.0012.000000T0000Z-200208T2100Z/
Central Carbon County-
Including the city of Rawlins
438 AM MST Sat Feb 8 2020

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 2 PM MST THIS
AFTERNOON...

* WHAT...Occasional snow and blowing snow. Additional snow 
  accumulations 1 to 2 inches. Winds gusting as high as 50 mph.

* WHERE...Central Carbon County, including Rawlins.

* WHEN...Until 2 PM MST this afternoon.

* IMPACTS...Plan on slippery road conditions. Patchy blowing 
  snow 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.

&&

$$
705 
WWUS45 KCYS 081514
WSWCYS

URGENT - WINTER WEATHER MESSAGE
National Weather Service Cheyenne WY
814 AM MST Sat Feb 8 2020

...TRAVEL IMPACTS WILL CONTINUE ALONG AND WEST OF THE LARAMIE RANGE
THROUGH THIS AFTERNOON...

WYZ110-090000-
/O.CAN.KCYS.BZ.W.0004.000000T0000Z-200209T0000Z/
/O.NEW.KCYS.WS.W.0005.200208T1514Z-200209T0000Z/
North Snowy Range Foothills-
Including the cities of Arlington and Elk Mountain
814 AM MST Sat Feb 8 2020

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

* WHAT...Snow and blowing snow. Additional snow accumulations of
  up to one inch. Winds gusting as high as 60 mph.

* WHERE...North Snowy Range Foothills including Arlington and Elk
  Mountain.

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

* IMPACTS...Plan on slippery road conditions. Widespread blowing
  snow could significantly 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.

&&

$$

WYZ116-090000-
/O.CAN.KCYS.BZ.W.0004.000000T0000Z-200209T0000Z/
/O.EXB.KCYS.WW.Y.0012.000000T0000Z-200209T0000Z/
South Laramie Range-
Including the cities of Buford, Pumpkin Vine, and Vedauwoo
814 AM MST Sat Feb 8 2020

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

* WHAT...Snow and blowing snow. Additional snow accumulations of 
  up to one inch. Winds gusting as high as 55 mph.

* WHERE...South Laramie Range including Vedauwoo and the
  Interstate 80 Summit.

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

* IMPACTS...Plan on slippery road conditions. Patchy blowing snow
  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.

&&

$$

WYZ109-082100-
/O.CON.KCYS.WW.Y.0012.000000T0000Z-200208T2100Z/
Central Carbon County-
Including the city of Rawlins
814 AM MST Sat Feb 8 2020

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 2 PM MST THIS
AFTERNOON...

* WHAT...Snow and blowing snow. Additional snow accumulations of 
  up to one inch. Winds gusting as high as 45 mph.

* WHERE...Central Carbon County including Rawlins.

* WHEN...Until 2 PM MST this afternoon.

* IMPACTS...Plan on slippery road conditions. Patchy blowing snow
  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.

&&

$$

The office that day

Everything else NWS Cheyenne, WY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 7, 6:09 PM MSTHigh Wind WarningCYSAlbany, Laramie, Platte23 hr
Feb 8, 8:14 AM MSTWinter Storm WarningCYSAlbany, Carbon3 hr
Feb 8, 4:30 PM MSTSnow Squall WarningCYSAlbany, Carbon, Laramie, Platte45 min

Nearby

Blizzard Warnings in Wyoming, 2020Every blizzard warning in 2020

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.