Alert archive / Idaho / Winter Storm Warnings in 2022

Winter Storm Warning 13, NWS Pocatello, ID

December 19, 202216 counties in Idaho

NWS Pocatello, ID issued this winter storm warning at Dec 19, 2022, 2:39 PM MST for 16 counties in Idaho. It took effect at Dec 19, 2022, 11:00 PM MST. It was in force for 46 hr. 10 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 19, 2022, 2:39 PM MST (21:39 UTC)
In effect from
Dec 19, 2022, 11:00 PM MST
Expired
Dec 21, 2022, 9:03 PM MST
In force
46 hr
Issued by
NWS Pocatello, ID

Counties Bannock County, ID, Bear Lake County, ID, Bingham County, ID, Blaine County, ID, Bonneville County, ID, Butte County, ID, Caribou County, ID, Cassia County, ID, Clark County, ID, Custer County, ID, Franklin County, ID, Fremont County, ID, Jefferson County, ID, Madison County, ID, Power County, ID, Teton County, ID

The radar

The Pocatello radar (KSFX), 34 km from the middle of the area, began a volume at 21:41 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 21, 6:31 AM MSTHEAVY SNOW 8Galena, IDON GALENA LODGE SNOWSTAKE.
Dec 21, 6:35 AM MSTSNOW 22 Sw Ketchum, IDSUN VALLEY SNOW STAKE PAST 12 HRS.
Dec 21, 7:00 AM MSTSNOW 0.95 N Inkom, IDCOCORAHS STATION ID-BK-27 INKOM 5.5 N.
Dec 21, 7:00 AM MSTSNOW 1Soda Springs, IDCOCORAHS STATION ID-CR-1 SODA SPRINGS.
Dec 21, 7:00 AM MSTSNOW 1.21 Wnw Hailey, IDCOCORAHS STATION ID-BN-6 HAILEY 1.0 WNW.
Dec 21, 7:00 AM MSTSNOW 1.2Stanley, IDCO-OP OBSERVER STATION STAI1 STANLEY.
Dec 21, 7:00 AM MSTSNOW 2.63 Nne Driggs, IDCOCORAHS STATION ID-TT-1 3 NNE DRIGGS.
Dec 21, 7:00 AM MSTSNOW 4.72 Sw Sun Valley, IDCOCORAHS STATION ID-BN-7 KETCHUM 2.2 SSE.
Dec 21, 9:00 AM MSTSNOW 3.32 S Sugar City, IDCOCORAHS STATION ID-MD-5 SUGAR CITY 1.9 S.
Dec 21, 3:48 PM MSTSNOW 4.5Bern, ID4.5 INCHES OF SNOW WITH PEAK WIND GUST OF 69 MPH. CURRENT WIND 39 MPH WITH ZERO VISIBILITY AT 3:40 PM.

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

The nearest sounding before it

Salt Lake City I, UT (KSLC), launched 12:00Z, 9.7 hours before the alert went out and 282 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, Salt Lake City I, UT at 12:00Z on 2022-12-19Temperature 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°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Salt Lake City I, UT at 12:00Z on 2022-12-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 94 square meters per square second.193958Sfc1 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
1525 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
94 m²/s²
0-3 km storm-relative helicity
157 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

743 
WWUS45 KPIH 192139
WSWPIH

URGENT - WINTER WEATHER MESSAGE
National Weather Service Pocatello ID
239 PM MST Mon Dec 19 2022

IDZ060-063-064-201200-
/O.NEW.KPIH.WS.W.0013.221220T0600Z-221222T0000Z/
Bear River Range-Caribou Range-Big Hole Mountains-
Including the cities of Emigration Summit, Wayan, Swan Valley, 
and Victor
239 PM MST Mon Dec 19 2022

...WINTER STORM WARNING IN EFFECT FROM 11 PM THIS EVENING TO 5 PM
MST WEDNESDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 5 to 12
  inches, except 6 to 16 inches on ridge tops and elevations above
  passes. Winds gusting as high as 55 mph Wednesday.

* WHERE...Emigration Summit, Wayan, Swan Valley, and Victor.

* WHEN...From 11 PM this evening to 5 PM MST Wednesday.

* IMPACTS...Travel could be very difficult. Patchy blowing snow
  could significantly reduce visibility. The hazardous conditions
  could impact the morning or evening commute. Gusty winds could
  bring down tree branches.

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 can be obtained by calling 5 1 1.

&&

$$

IDZ066-072-201200-
/O.NEW.KPIH.WW.Y.0025.221220T0600Z-221222T0000Z/
Centennial Mountains - Island Park-Sawtooth/Stanley Basin-
Including the cities of Island Park, Kilgore, and Stanley
239 PM MST Mon Dec 19 2022

...WINTER WEATHER ADVISORY IN EFFECT FROM 11 PM THIS EVENING TO
5 PM MST WEDNESDAY...

* WHAT...Snow expected. Total snow accumulations of 2 to 10
  inches, except up to 15 inches on ridge tops and elevations
  above passes. Winds gusting as high as 45 mph Wednesday
  afternoon.

* WHERE...Island Park, Kilgore, and Stanley.

* WHEN...From 11 PM this evening to 5 PM MST Wednesday.

* IMPACTS...Travel could be very difficult. Patchy blowing snow
  could significantly reduce visibility. The hazardous conditions
  could impact the morning or evening commute. Gusty winds could
  bring down tree branches. The cold wind chills as low as 25
  below zero could cause frostbite on exposed skin in as little as
  30 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions can be obtained by calling 5 1 1.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/pocatello
7 follow-up statements
904 
WWUS45 KPIH 192202
WSWPIH

URGENT - WINTER WEATHER MESSAGE
National Weather Service Pocatello ID
302 PM MST Mon Dec 19 2022

IDZ060-063-064-201200-
/O.CON.KPIH.WS.W.0013.221220T0600Z-221222T0000Z/
Bear River Range-Caribou Range-Big Hole Mountains-
Including the cities of Emigration Summit, Wayan, Swan Valley, 
and Victor
302 PM MST Mon Dec 19 2022

...WINTER STORM WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING
TO 5 PM MST WEDNESDAY...

* WHAT...Moderate to heavy snow expected. Total snow accumulations
  of 5 to 12 inches, except 6 to 16 inches on ridge tops and
  elevations above passes. Winds gusting as high as 40 to 50 mph
  Wednesday with cold front passage.

* WHERE...Emigration Summit, Wayan, Pine Creek pass, Swan Valley,
  and Victor to include the Big Holes, Caribou Range and the
  Wasatch range. 

* WHEN...From 11 PM this evening to 5 PM MST Wednesday. Expect
  light to moderate snow through Tuesday afternoon. Tuesday night
  through Wednesday the heavier snow will come with the cold 
  front passage. 

* IMPACTS...Travel could be very difficult. Patchy blowing snow
  could significantly reduce visibility and create blowing and
  drifting snow. The hazardous conditions could impact the 
  morning or evening commute. Gusty winds could bring down tree 
  branches.

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 can be obtained by calling 5 1 1.

&&

$$

IDZ066-072-201200-
/O.CON.KPIH.WW.Y.0025.221220T0600Z-221222T0000Z/
Centennial Mountains - Island Park-Sawtooth/Stanley Basin-
Including the cities of Island Park, Kilgore, and Stanley
302 PM MST Mon Dec 19 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 11 PM THIS
EVENING TO 5 PM MST WEDNESDAY...

* WHAT...Snow expected. Total snow accumulations of 2 to 10
  inches, except up to 15 inches on ridge tops and elevations
  above passes. Winds gusting as high as 45 mph Wednesday with
  cold front passage. 

* WHERE...Island Park, Kilgore, and Stanley.

* WHEN...From 11 PM this evening to 5 PM MST Wednesday. Heavier
  snow and wind will occur with cold front passage late Tuesday
  into Wednesday. 

* IMPACTS...Travel could be very difficult. Patchy blowing snow 
  could significantly reduce visibility. The hazardous 
  conditions could impact the morning or evening commute. Gusty 
  winds could bring down tree branches. The cold wind chills as 
  low as 25 below zero could cause frostbite on exposed skin in 
  as little as 30 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions can be obtained by calling 5 1 1.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/pocatello
991 
WWUS45 KPIH 200308
WSWPIH

URGENT - WINTER WEATHER MESSAGE
National Weather Service Pocatello ID
808 PM MST Mon Dec 19 2022

IDZ060-063-064-201200-
/O.CON.KPIH.WS.W.0013.221220T0600Z-221222T0000Z/
Bear River Range-Caribou Range-Big Hole Mountains-
Including the cities of Emigration Summit, Wayan, Swan Valley, 
and Victor
808 PM MST Mon Dec 19 2022

...WINTER STORM WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING
TO 5 PM MST WEDNESDAY...

* WHAT...Moderate to heavy snow expected. Total snow 
  accumulations of 5 to 12 inches, except 6 to 16 inches on 
  ridge tops and elevations above passes. Winds gusting as high 
  as 40 to 50 mph Wednesday with cold front passage.

* WHERE...Emigration Summit, Wayan, Pine Creek pass, Swan 
  Valley, and Victor to include the Big Holes, Caribou Range and 
  the Wasatch range.

* WHEN...From 11 PM this evening to 5 PM MST Wednesday. Expect 
  light to moderate snow through Tuesday afternoon. Tuesday 
  night through Wednesday the heavier snow will come with the 
  cold front passage.

* IMPACTS...Travel could be very difficult. Patchy blowing snow 
  could significantly reduce visibility and create blowing and 
  drifting snow. The hazardous conditions could impact the 
  morning or evening commute. Gusty winds could bring down tree 
  branches.

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 can be obtained by calling 5 1 1.

&&

$$

IDZ066-072-201200-
/O.CON.KPIH.WW.Y.0025.221220T0600Z-221222T0000Z/
Centennial Mountains - Island Park-Sawtooth/Stanley Basin-
Including the cities of Island Park, Kilgore, and Stanley
808 PM MST Mon Dec 19 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 11 PM THIS
EVENING TO 5 PM MST WEDNESDAY...

* WHAT...Snow expected. Total snow accumulations of 2 to 10 
  inches, except up to 15 inches on ridge tops and elevations 
  above passes. Winds gusting as high as 45 mph Wednesday with 
  cold front passage.

* WHERE...Island Park, Kilgore, and Stanley.

* WHEN...From 11 PM this evening to 5 PM MST Wednesday. Heavier 
  snow and wind will occur with cold front passage late Tuesday 
  into Wednesday.

* IMPACTS...Travel could be very difficult. Patchy blowing snow 
  could significantly reduce visibility. The hazardous 
  conditions could impact the morning or evening commute. Gusty 
  winds could bring down tree branches. The cold wind chills as 
  low as 25 below zero could cause frostbite on exposed skin in 
  as little as 30 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions can be obtained by calling 5 1 1.

&&

$$

IDZ068>071-073>075-201200-
/O.NEW.KPIH.WS.A.0009.221221T0600Z-221222T0000Z/
Lost River Valley-Lost River Range-Challis/Pahsimeroi Valleys-
Frank Church Wilderness-Sun Valley Region-
Big Lost Highlands/Copper Basin-Wood River Foothills-
Including the cities of Howe, Arco, Mackay, Chilly, Borah Peak, 
Challis, Clayton, Ketchum, Sun Valley, Galena, Copper Basin, 
Hailey, Bellevue, and Picabo
808 PM MST Mon Dec 19 2022

...WINTER STORM WATCH IN EFFECT FROM TUESDAY EVENING THROUGH
WEDNESDAY AFTERNOON...

* WHAT...Significant blowing and drifting snow possible. Total 
  snow accumulations of up to two inches possible. Winds could 
  gust as high as 50 mph.

* WHERE...Howe, Arco, Mackay, Chilly, Borah Peak, Challis, 
  Clayton, Ketchum, Sun Valley, Galena, Copper Basin, Hailey, 
  Bellevue, and Picabo.

* WHEN...From Tuesday evening through Wednesday afternoon.

* IMPACTS...Plan on slippery road conditions. Areas of blowing
  snow could significantly reduce visibility. The hazardous
  conditions could impact the morning or evening commute. The 
  cold wind chills as low as 20 below zero could cause frostbite 
  on exposed skin in as little as 30 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts for updates on this situation. 

&&

$$

IDZ051-055>057-201200-
/O.NEW.KPIH.WS.A.0009.221221T0600Z-221222T0000Z/
Shoshone/Lava Beds-Eastern Magic Valley-
Southern Hills/Albion Mountains-Raft River Region-
Including the cities of Shoshone, Richfield, Carey, Burley, 
Rupert, Heyburn, Oakley, Albion, Almo, Malta, Rockland, 
and Holbrook
808 PM MST Mon Dec 19 2022

...WINTER STORM WATCH IN EFFECT FROM TUESDAY EVENING THROUGH
WEDNESDAY AFTERNOON...

* WHAT...Significant blowing and drifting snow possible. Total 
  snow accumulations of up to two inches, except 2 to 4 inches on 
  ridge tops and elevations above passes possible. Winds could 
  gust as high as 50 mph.

* WHERE...Shoshone, Richfield, Carey, Burley, Rupert, Heyburn, 
  Oakley, Albion, Almo, Malta, Rockland, and Holbrook.

* WHEN...From Tuesday evening through Wednesday afternoon.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts for updates on this situation. 

&&

$$

IDZ058-059-061-062-201200-
/O.NEW.KPIH.WS.A.0009.221221T0600Z-221222T0000Z/
Marsh and Arbon Highlands-Franklin/Eastern Oneida Region-
Bear Lake Valley-Blackfoot Mountains-
Including the cities of Inkom, McCammon, Downey, 
Lava Hot Springs, Malad, Preston, Thatcher, St. Charles, 
Montpelier, Georgetown, Grace, Soda Springs, Henry, and Bone
808 PM MST Mon Dec 19 2022

...WINTER STORM WATCH IN EFFECT FROM TUESDAY EVENING THROUGH
WEDNESDAY AFTERNOON...

* WHAT...Significant blowing and drifting snow possible. Total 
  snow accumulations of 2 to 4 inches possible. Winds could gust 
  as high as 55 mph.

* WHERE...Inkom, McCammon, Downey, Lava Hot Springs, Malad, 
  Preston, Thatcher, St. Charles, Montpelier, Georgetown, Grace, 
  Soda Springs, Henry, and Bone.

* WHEN...From Tuesday evening through Wednesday afternoon.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts for updates on this situation. 

&&

$$

IDZ052>054-065-067-201200-
/O.NEW.KPIH.WS.A.0009.221221T0600Z-221222T0000Z/
Arco/Mud Lake Desert-Upper Snake River Plain-
Lower Snake River Plain-Teton Valley-Beaverhead - Lemhi Highlands-
Including the cities of Mud Lake, INL, Craters of the Moon NM, 
Idaho Falls, Rexburg, St. Anthony, Pocatello, Blackfoot, 
American Falls, Shelley, Fort Hall, Ashton, Tetonia, Driggs, 
Dubois, Spencer, Edie School, and Small
808 PM MST Mon Dec 19 2022

...WINTER STORM WATCH IN EFFECT FROM TUESDAY EVENING THROUGH
WEDNESDAY AFTERNOON...

* WHAT...Significant blowing and drifting snow possible. Total
  snow accumulations of up to 2 inches, except up to four inches 
  on ridge tops and elevations above passes possible. Winds could 
  gust as high as 50 mph.

* WHERE...Mud Lake, INL, Craters of the Moon NM, Idaho Falls, 
  Rexburg, St. Anthony, Pocatello, Blackfoot, American Falls, 
  Shelley, Fort Hall, Ashton, Tetonia, Driggs, Dubois, Spencer, 
  Edie School, and Small.

* WHEN...From Tuesday evening through Wednesday afternoon.

* IMPACTS...Plan on slippery road conditions. Areas of blowing 
  snow could significantly reduce visibility. The hazardous 
  conditions could impact the morning or evening commute. The 
  cold wind chills as low as 20 below zero could result in 
  hypothermia if precautions are not taken.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts for updates on this situation. 

&&

$$

For more information from the National Weather Service visit
https://weather.gov/pocatello
928 
WWUS45 KPIH 200957
WSWPIH

URGENT - WINTER WEATHER MESSAGE
National Weather Service Pocatello ID
257 AM MST Tue Dec 20 2022

IDZ060-063-064-202200-
/O.CON.KPIH.WS.W.0013.000000T0000Z-221222T0000Z/
Bear River Range-Caribou Range-Big Hole Mountains-
Including the cities of Emigration Summit, Wayan, Swan Valley, 
and Victor
257 AM MST Tue Dec 20 2022

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

* WHAT...Moderate to heavy snow. Additional snow accumulations of
  4 to 10 inches, except 5 to 13 inches on ridge tops and
  elevations above passes. Winds gusting as high as 55 mph with
  cold front passage.

* WHERE...Emigration Summit, Wayan, Pine Creek pass, Swan 
  Valley, and Victor to include the Big Holes, Caribou Range and 
  the Wasatch range.

* WHEN...Until 5 PM MST Wednesday. Expect light to moderate snow
  through this afternoon. Tonight through Wednesday the heavier 
  snow will come with the cold front passage. 

* IMPACTS...Travel could be very difficult. Patchy blowing snow 
  could significantly reduce visibility and create blowing and 
  drifting snow. The hazardous conditions could impact the 
  morning or evening commute. Gusty winds could bring down tree 
  branches.

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 can be obtained by calling 5 1 1.

&&

$$

IDZ066-072-202200-
/O.CON.KPIH.WW.Y.0025.000000T0000Z-221222T0000Z/
Centennial Mountains - Island Park-Sawtooth/Stanley Basin-
Including the cities of Island Park, Kilgore, and Stanley
257 AM MST Tue Dec 20 2022

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

* WHAT...Snow. Additional snow accumulations of 2 to 10 inches,
  except up to 15 inches on ridge tops and elevations above
  passes. Winds gusting as high as 50 mph Wednesday with cold
  front passage.

* WHERE...Island Park, Kilgore, and Stanley.

* WHEN...Until 5 PM MST Wednesday. Heavier snow and wind will
  occur with cold front passage late Tuesday into Wednesday.


* IMPACTS...Travel could be very difficult. Patchy blowing snow 
  could significantly reduce visibility. The hazardous 
  conditions could impact the morning or evening commute. Gusty 
  winds could bring down tree branches. The cold wind chills as 
  low as 25 below zero could cause frostbite on exposed skin in 
  as little as 30 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions can be obtained by calling 5 1 1.

&&

$$

IDZ068>071-073>075-202200-
/O.CON.KPIH.WS.A.0009.221221T0600Z-221222T0000Z/
Lost River Valley-Lost River Range-Challis/Pahsimeroi Valleys-
Frank Church Wilderness-Sun Valley Region-
Big Lost Highlands/Copper Basin-Wood River Foothills-
Including the cities of Howe, Arco, Mackay, Chilly, Borah Peak, 
Challis, Clayton, Ketchum, Sun Valley, Galena, Copper Basin, 
Hailey, Bellevue, and Picabo
257 AM MST Tue Dec 20 2022

...WINTER STORM WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH
WEDNESDAY AFTERNOON...

* WHAT...Significant blowing and drifting snow possible. Total 
  snow accumulations of up to two inches possible. Winds could 
  gust as high as 50 mph.

* WHERE...Howe, Arco, Mackay, Chilly, Borah Peak, Challis, 
  Clayton, Ketchum, Sun Valley, Galena, Copper Basin, Hailey, 
  Bellevue, and Picabo.

* WHEN...From this evening through Wednesday afternoon.

* IMPACTS...Plan on slippery road conditions. Areas of blowing 
  snow could significantly reduce visibility. The hazardous 
  conditions could impact the morning or evening commute. The 
  cold wind chills as low as 20 below zero could cause frostbite 
  on exposed skin in as little as 30 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts for updates on this situation. 

&&

$$

IDZ051-055>057-202200-
/O.CON.KPIH.WS.A.0009.221221T0600Z-221222T0000Z/
Shoshone/Lava Beds-Eastern Magic Valley-
Southern Hills/Albion Mountains-Raft River Region-
Including the cities of Shoshone, Richfield, Carey, Burley, 
Rupert, Heyburn, Oakley, Albion, Almo, Malta, Rockland, 
and Holbrook
257 AM MST Tue Dec 20 2022

...WINTER STORM WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH
WEDNESDAY AFTERNOON...

* WHAT...Significant blowing and drifting snow possible. Total
  snow accumulations of up to two inches, except 3 to 6 inches on
  ridge tops and elevations above passes possible. Winds could 
  gust as high as 50 mph.

* WHERE...Shoshone, Richfield, Carey, Burley, Rupert, Heyburn, 
  Oakley, Albion, Almo, Malta, Rockland, and Holbrook.

* WHEN...From this evening through Wednesday afternoon.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts for updates on this situation. 

&&

$$

IDZ058-059-061-062-202200-
/O.CON.KPIH.WS.A.0009.221221T0600Z-221222T0000Z/
Marsh and Arbon Highlands-Franklin/Eastern Oneida Region-
Bear Lake Valley-Blackfoot Mountains-
Including the cities of Inkom, McCammon, Downey, 
Lava Hot Springs, Malad, Preston, Thatcher, St. Charles, 
Montpelier, Georgetown, Grace, Soda Springs, Henry, and Bone
257 AM MST Tue Dec 20 2022

...WINTER STORM WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH
WEDNESDAY AFTERNOON...

* WHAT...Significant blowing and drifting snow possible. Total 
  snow accumulations of 2 to 4 inches possible. Winds could gust 
  as high as 50 mph.

* WHERE...Inkom, McCammon, Downey, Lava Hot Springs, Malad, 
  Preston, Thatcher, St. Charles, Montpelier, Georgetown, Grace, 
  Soda Springs, Henry, and Bone.

* WHEN...From this evening through Wednesday afternoon.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts for updates on this situation. 

&&

$$

IDZ052>054-065-067-202200-
/O.CON.KPIH.WS.A.0009.221221T0600Z-221222T0000Z/
Arco/Mud Lake Desert-Upper Snake River Plain-
Lower Snake River Plain-Teton Valley-Beaverhead - Lemhi Highlands-
Including the cities of Mud Lake, INL, Craters of the Moon NM, 
Idaho Falls, Rexburg, St. Anthony, Pocatello, Blackfoot, 
American Falls, Shelley, Fort Hall, Ashton, Tetonia, Driggs, 
Dubois, Spencer, Edie School, and Small
257 AM MST Tue Dec 20 2022

...WINTER STORM WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH
WEDNESDAY AFTERNOON...

* WHAT...Significant blowing and drifting snow possible. Total
  snow accumulations of up to 3 inches possible. Winds could gust
  as high as 45 mph.

* WHERE...Mud Lake, INL, Craters of the Moon NM, Idaho Falls, 
  Rexburg, St. Anthony, Pocatello, Blackfoot, American Falls, 
  Shelley, Fort Hall, Ashton, Tetonia, Driggs, Dubois, Spencer, 
  Edie School, and Small.

* WHEN...From this evening through Wednesday afternoon.

* IMPACTS...Plan on slippery road conditions. Areas of blowing 
  snow could significantly reduce visibility. The hazardous 
  conditions could impact the morning or evening commute. The 
  cold wind chills as low as 20 below zero could result in 
  hypothermia if precautions are not taken.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts for updates on this situation. 

&&

$$

For more information from the National Weather Service visit
https://weather.gov/pocatello
980 
WWUS45 KPIH 201854
WSWPIH

URGENT - WINTER WEATHER MESSAGE
National Weather Service Pocatello ID
1154 AM MST Tue Dec 20 2022

IDZ060-211200-
/O.CAN.KPIH.WS.W.0013.000000T0000Z-221222T0000Z/
/O.NEW.KPIH.WS.W.0014.221221T0600Z-221222T0600Z/
Bear River Range-
Including the city of Emigration Summit
1154 AM MST Tue Dec 20 2022

...WINTER STORM WARNING IN EFFECT FROM 11 PM THIS EVENING TO
11 PM MST WEDNESDAY...

* WHAT...Moderate to heavy snow expected with blowing and drifting
  snow from high wind. Total snow accumulations of 4 to 7 inches,
  except 6 to 12 inches on ridge tops and elevations above 
  passes. Winds gusting as high as 50 to 60 mph.

* WHERE...Emigration Summit...Wasatch Mountains in Idaho. 

* WHEN...From 11 PM this evening to 11 PM MST Wednesday.

* IMPACTS...Travel will be very difficult. Areas of blowing snow
  will significantly reduce visibility. The hazardous conditions
  will impact the morning and evening commute. Strong winds could
  cause tree damage. The cold wind chills as low as 25 below zero
  could cause frostbite on exposed skin in as little as 30 
  minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Avoid outside activities if possible. When outside, make sure you
wear appropriate clothing, a hat, and gloves. 

The latest road conditions and closures can be obtained by 
calling 5 1 1 or going to 511.idaho.gov.

&&

$$

IDZ066-211200-
/O.UPG.KPIH.WW.Y.0025.000000T0000Z-221222T0000Z/
/O.NEW.KPIH.WC.W.0007.221222T0000Z-221222T1900Z/
/O.EXA.KPIH.WS.W.0013.000000T0000Z-221222T0000Z/
Centennial Mountains - Island Park-
Including the cities of Island Park and Kilgore
1154 AM MST Tue Dec 20 2022

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

...WIND CHILL WARNING IN EFFECT FROM 5 PM WEDNESDAY TO NOON MST
THURSDAY...

* WHAT...For the Winter Storm Warning, moderate to heavy snow,
  blowing and drifting snow, and high wind. Additional snow 
  accumulations of 4 to 9 inches, 10 to 18 inches on ridge tops 
  and elevations above passes. Winds gusting as high as 30 to 40 
  mph. 

  For the Wind Chill Warning, dangerously cold wind chills 
  expected. Wind chills as low as 50 below zero.

* WHERE...Cities of Island Park, Raynolds Pass, Targhee Pass and
  Kilgore. The Centennial Mountains and Island Park areas.
  

* WHEN...For the Winter Storm Warning, until 5 PM MST Wednesday. 
  
  For the Wind Chill Warning, from 5 PM Wednesday to noon MST 
  Thursday.

* IMPACTS...Travel will be very difficult. Areas of blowing snow
  will significantly reduce visibility. Blowing and drifting snow
  could cause road closures. The hazardous conditions will impact
  the morning and evening commute. The dangerously cold wind 
  chills could cause frostbite on exposed skin in as little as 5 
  minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Avoid outside activities if possible. When outside, make sure you
wear appropriate clothing, a hat, and gloves. 

The latest road conditions and closures can be obtained by 
calling 5 1 1 or going to 511.idaho.gov.

&&

$$

IDZ065-211200-
/O.UPG.KPIH.WS.A.0009.221221T0600Z-221222T0000Z/
/O.NEW.KPIH.WC.W.0007.221222T0000Z-221222T1900Z/
/O.EXA.KPIH.WS.W.0013.000000T0000Z-221222T0000Z/
Teton Valley-
Including the cities of Ashton, Tetonia, and Driggs
1154 AM MST Tue Dec 20 2022

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

...WIND CHILL WARNING IN EFFECT FROM 5 PM WEDNESDAY TO NOON MST
THURSDAY...

* WHAT...For the Winter Storm Warning, moderate to heavy snow,
  blowing and drifting snow, and high wind. Additional snow 
  accumulations of 2 to 8 inches. Winds gusting as high as 40 mph.
 
  For the Wind Chill Warning, dangerously cold wind chills 
  expected. Wind chills as low as 40 below zero.

* WHERE...Cities of Ashton, Tetonia, Botts Pass, and Driggs. Teton
  Valley.

* WHEN...For the Winter Storm Warning, until 5 PM MST Wednesday. 
  
  For the Wind Chill Warning, from 5 PM Wednesday to noon MST 
  Thursday.

* IMPACTS...Travel will be very difficult. Areas of blowing snow
  could significantly reduce visibility. Blowing and drifting snow
  could cause road closures. The hazardous conditions will impact
  the morning and evening commute. The dangerously cold wind 
  chills could cause frostbite on exposed skin in as little as 10 
  minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Avoid outside activities if possible. When outside, make sure you
wear appropriate clothing, a hat, and gloves. 

The latest road conditions and closures can be obtained by 
calling 5 1 1 or going to 511.idaho.gov.

&&

$$

IDZ056-061-211200-
/O.UPG.KPIH.WS.A.0009.221221T0600Z-221222T0000Z/
/O.NEW.KPIH.WC.W.0007.221222T0600Z-221222T1900Z/
/O.EXB.KPIH.WS.W.0013.221221T0600Z-221222T0600Z/
Southern Hills/Albion Mountains-Bear Lake Valley-
Including the cities of Albion, Almo, St. Charles, Montpelier, 
and Georgetown
1154 AM MST Tue Dec 20 2022

...WINTER STORM WARNING IN EFFECT FROM 11 PM THIS EVENING TO
11 PM MST WEDNESDAY...

...WIND CHILL WARNING IN EFFECT FROM 11 PM WEDNESDAY TO NOON MST
THURSDAY...

* WHAT...For the Winter Storm Warning, heavy snow, blowing and
  drifting snow and high wind expected. Total snow accumulations 
  of 2 to 5 inches with 6 to 9 inches on ridge tops and elevations
  above passes. Winds gusting as high as 40 to 55 mph. 

 For the Wind Chill Warning, dangerously cold wind chills expected.
 Wind chills as low as 30 below zero.

* WHERE...Albion, Almo, St Charles, Montpelier, Georgetown, 
  Geneva Summit, Border Summit, and Georgetown Summit. Bear Lake 
  Valley and Southern Hills/Albion Mountains
  

* WHEN...For the Winter Storm Warning, from 11 PM this evening 
  to 11 PM MST Wednesday. 

   For the Wind Chill Warning, from 11 PM Wednesday to noon MST 
   Thursday.

* IMPACTS...Plan on hazardous road conditions. Areas of blowing
  snow will significantly reduce visibility. The hazardous
  conditions will impact the morning or evening commute. Strong 
  winds could cause tree damage. The cold wind chills could cause 
  frostbite on exposed skin in as little as 30 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Avoid outside activities if possible. When outside, make sure you
wear appropriate clothing, a hat, and gloves. 

The latest road conditions and closures can be obtained by 
calling 5 1 1 or going to 511.idaho.gov.

&&

$$

IDZ058-062-211200-
/O.UPG.KPIH.WS.A.0009.221221T0600Z-221222T0000Z/
/O.NEW.KPIH.WC.W.0007.221222T0000Z-221222T1900Z/
/O.EXB.KPIH.WS.W.0013.221221T0600Z-221222T0000Z/
Marsh and Arbon Highlands-Blackfoot Mountains-
Including the cities of Inkom, McCammon, Downey, 
Lava Hot Springs, Grace, Soda Springs, Henry, and Bone
1154 AM MST Tue Dec 20 2022

...WINTER STORM WARNING IN EFFECT FROM 11 PM THIS EVENING TO 5 PM
MST WEDNESDAY...

...WIND CHILL WARNING IN EFFECT FROM 5 PM WEDNESDAY TO NOON MST
THURSDAY...

* WHAT...For the Winter Storm Warning, heavy snow, blowing and
  drifting snow, and high wind expected. Total snow accumulations
  of 3 to 5 inches, except 6 to 9 inches on ridge tops and
  elevations above passes. Winds gusting as high as 45 to 55 mph.
  
  For the Wind Chill Warning, dangerously cold wind chills 
  expected. Wind chills as low as 40 below zero.

* WHERE...Inkom, McCammon, Downey, Lava Hot Springs, Grace, Soda
  Springs, Henry, Bone, Fish Creek Summit and Malad pass. Marsh
  and Arbon Highlands and the Blackfoot Mountains. 

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

  For the Wind Chill Warning, from 5 PM Wednesday to noon MST 
  Thursday.

* IMPACTS...Plan on slippery road conditions. Areas of blowing
  snow could significantly reduce visibility. The hazardous
  conditions could impact the morning or evening commute. Strong
  winds could cause tree damage. The dangerously cold wind chills
  could cause frostbite on exposed skin in as little as 10
  minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Avoid outside activities if possible. When outside, make sure you
wear appropriate clothing, a hat, and gloves. 

The latest road conditions and closures can be obtained by 
calling 5 1 1 or going to 511.idaho.gov.

&&

$$

IDZ068-070-073-075-211200-
/O.UPG.KPIH.WS.A.0009.221221T0600Z-221222T0000Z/
/O.NEW.KPIH.WW.Y.0026.221221T0600Z-221222T0000Z/
/O.NEW.KPIH.WC.W.0007.221222T0000Z-221222T1900Z/
Lost River Valley-Challis/Pahsimeroi Valleys-Sun Valley Region-
Wood River Foothills-
Including the cities of Howe, Arco, Mackay, Chilly, Challis, 
Ketchum, Sun Valley, Galena, Hailey, Bellevue, and Picabo
1154 AM MST Tue Dec 20 2022

...WINTER WEATHER ADVISORY IN EFFECT FROM 11 PM THIS EVENING TO
5 PM MST WEDNESDAY...

...WIND CHILL WARNING IN EFFECT FROM 5 PM WEDNESDAY TO NOON MST
THURSDAY...

* WHAT...For the Winter Weather Advisory, light snow, blowing and
  drifting snow and high winds expected. Total snow accumulations
  of up to two inches, except 2 to 4 inches on ridge tops and
  elevations above passes. Winds gusting as high as 40 to 50  
  mph.

  For the Wind Chill Warning, dangerously cold wind chills
  expected. Wind chills as low as 40 below zero. 

* WHERE...Howe, Arco, Mackay, Chilly, Challis, Ketchum, Sun
  Valley, Galena, Hailey, Bellevue, Picabo, Willow Creek Summit,
  and Tom Cat Summit. Challis/Pahsimeroi Valleys, Sun Valley
  region and Wood River foothills.

* WHEN...For the Winter Weather Advisory, from 11 PM this evening
  to 5 PM M ST Wednesday.

  For the Wind Chill Warning, from 5 PM Wednesday to noon 
  MST Thursday.

* IMPACTS...Plan on slippery road conditions. Areas of blowing 
  snow could significantly reduce visibility. The hazardous 
  conditions could impact the morning or evening commute. The 
  dangerously cold wind chills could cause frostbite on exposed 
  skin in as little as 10 minutes.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Avoid outside activities if possible. When outside, make sure you
wear appropriate clothing, a hat, and gloves. 

The latest road conditions and closures can be obtained by 
calling 5 1 1 or going to 511.idaho.gov.

&&

$$

IDZ057-059-211200-
/O.UPG.KPIH.WS.A.0009.221221T0600Z-221222T0000Z/
/O.NEW.KPIH.WW.Y.0026.221221T0600Z-221222T0600Z/
/O.NEW.KPIH.WC.W.0007.221222T0600Z-221222T1900Z/
Raft River Region-Franklin/Eastern Oneida Region-
Including the cities of Malta, Rockland, Holbrook, Malad, 
Preston, and Thatcher
1154 AM MST Tue Dec 20 2022

...WINTER WEATHER ADVISORY IN EFFECT FROM 11 PM THIS EVENING TO
11 PM MST WEDNESDAY...

...WIND CHILL WARNING IN EFFECT FROM 11 PM WEDNESDAY TO NOON MST
THURSDAY...

* WHAT...For the Winter Weather Advisory, light snow, blowing and
  drifting snow, and high wind expected. Total snow accumulations
  of 1 to 3 inches. Winds gusting as high as 50 mph.

  For the Wind Chill Warning, dangerously cold wind chills 
 expected. Wind chills as low as 25 below zero. 

* WHERE...Malta, Rockland, Holbrook, Malad, Preston, Thatcher,
  Sweetzer Summit, Holbrook Summit and Malad Pass. Raft River
  Region and Franklin/Oneida Region

* WHEN...For the Winter Weather Advisory, from 11 PM this evening
  to 11 PM MST Wednesday.

  For the Wind Chill Warning, from 11 PM Wednesday to 
  noon MST Thursday.

* IMPACTS...Plan on slippery road conditions. Areas of blowing 
  snow could significantly reduce visibility. The hazardous 
  conditions could impact the morning or evening commute. Gusty 
  winds could bring down tree branches. The cold wind chills 
  could cause frostbite on exposed skin in as little as 30 
  minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Avoid outside activities if possible. When outside, make sure you
wear appropriate clothing, a hat, and gloves. 

Slow down and use caution while traveling. 

The latest road conditions and closures can be obtained by 
calling 5 1 1 or going to 511.idaho.gov.

&&

$$

IDZ051>055-067-211200-
/O.UPG.KPIH.WS.A.0009.221221T0600Z-221222T0000Z/
/O.NEW.KPIH.WW.Y.0026.221221T0600Z-221222T0000Z/
/O.NEW.KPIH.WC.W.0007.221222T0000Z-221222T1900Z/
Shoshone/Lava Beds-Arco/Mud Lake Desert-Upper Snake River Plain-
Lower Snake River Plain-Eastern Magic Valley-Beaverhead -
Lemhi Highlands-
Including the cities of Shoshone, Richfield, Carey, Mud Lake, 
INL, Craters of the Moon NM, Idaho Falls, Rexburg, St. Anthony, 
Pocatello, Blackfoot, American Falls, Shelley, Fort Hall, Burley,
Rupert, Heyburn, Oakley, Dubois, Spencer, Edie School, and Small
1154 AM MST Tue Dec 20 2022

...WINTER WEATHER ADVISORY IN EFFECT FROM 11 PM THIS EVENING TO
5 PM MST WEDNESDAY...

...WIND CHILL WARNING IN EFFECT FROM 5 PM WEDNESDAY TO NOON MST
THURSDAY...

* WHAT...For the Winter Weather Advisory, light snow and blowing
  and drifting snow from high winds. Total snow accumulations of
  up to two inches. Winds gusting as high as 45 to 55 mph.

  For the Wind Chill Warning, dangerously cold wind chills
  expected. Wind chills as low as 45 below zero. 

* WHERE...Shoshone, Richfield, Carey, Mud Lake, INL, Craters of
  the Moon NM, Idaho Falls, Rexburg, St. Anthony, Pocatello,
  Blackfoot, American Falls, Shelley, Fort Hall, Burley, Rupert,
  Heyburn, Oakley, Dubois, Spencer, Edie School, Small, and Monida
  Pass. The Snake Plain, Arco Desert and the Beaverhead/Lemhi
  Highlands.  

* WHEN...For the Winter Weather Advisory, from 11 PM this evening
  to 5 PM MST Wednesday.

  For the Wind Chill Warning, from 5 PM Wednesday to noon 
  MST Thursday. 

* IMPACTS...Plan on slippery road conditions. Areas of blowing 
  snow could significantly reduce visibility. The hazardous 
  conditions could impact the morning or evening commute. Gusty 
  winds could bring down tree branches. The dangerously cold 
  wind chills could cause frostbite on exposed skin in as little 
  as 10 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Avoid outside activities if possible. When outside, make sure you
wear appropriate clothing, a hat, and gloves. 

Slow down and use caution while traveling. 

The latest road conditions and closures can be obtained by 
calling 5 1 1 or going to 511.idaho.gov.

&&

$$

IDZ072-211200-
/O.UPG.KPIH.WW.Y.0025.000000T0000Z-221222T0000Z/
/O.EXA.KPIH.WS.W.0013.000000T0000Z-221222T0000Z/
Sawtooth/Stanley Basin-
Including the city of Stanley
1154 AM MST Tue Dec 20 2022

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

* WHAT...Heavy snow with blowing and drifting snow from high wind.
  Additional snow accumulations of 2 to 7 inches, except 8 to 12 
  inches on ridge tops and elevations above passes. Winds gusting 
  as high as 50 mph.

* WHERE...City of Stanley. Sawtooth and Stanley Basin

* WHEN...Until 5 PM MST Wednesday.

* IMPACTS...Travel will be very difficult. Patchy blowing snow
  will significantly reduce visibility. The hazardous conditions 
  could impact the morning or evening commute. Gusty winds could 
  bring down tree branches. The cold wind chills as low as 25 
  below zero could cause frostbite on exposed skin in as little as
  30 minutes.

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 and closures can be obtained by 
calling 5 1 1 or going to 511.idaho.gov.

&&

$$

IDZ063-064-211200-
/O.CON.KPIH.WS.W.0013.000000T0000Z-221222T0000Z/
Caribou Range-Big Hole Mountains-
Including the cities of Wayan, Swan Valley, and Victor
1154 AM MST Tue Dec 20 2022

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

* WHAT...Moderate to heavy snow. Additional snow accumulations of
  4 to 10 inches, except 10 to 18 inches on ridge tops and 
  elevations above passes. Winds gusting as high as 55 mph with 
  cold front passage.

* WHERE...Emigration Summit, Wayan, Pine Creek pass, Swan 
  Valley, and Victor to include the Big Holes, Caribou Range and 
  the Wasatch range.

* WHEN...Until 5 PM MST Wednesday. Expect light to moderate snow 
  through this afternoon. Tonight through Wednesday the heavier 
  snow will come with the cold front passage.

* IMPACTS...Travel could be very difficult. Patchy blowing snow
  will significantly reduce visibility and create blowing and
  drifting snow. The hazardous conditions could impact the morning
  or evening commute. Gusty winds could bring down tree branches.
  The cold wind chills as low as 30 below zero could cause 
  frostbite on exposed skin in as little as 30 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Avoid outside activities if possible. When outside, make sure you
wear appropriate clothing, a hat, and gloves. 

The latest road conditions and closures can be obtained by 
calling 5 1 1 or going to 511.idaho.gov.

&&

$$

IDZ069-071-074-211200-
/O.UPG.KPIH.WS.A.0009.221221T0600Z-221222T0000Z/
/O.NEW.KPIH.WW.Y.0026.221221T0600Z-221222T0000Z/
Lost River Range-Frank Church Wilderness-
Big Lost Highlands/Copper Basin-
Including the cities of Borah Peak, Clayton, and Copper Basin
1154 AM MST Tue Dec 20 2022

...WINTER WEATHER ADVISORY IN EFFECT FROM 11 PM THIS EVENING TO
5 PM MST WEDNESDAY...

* WHAT...Light snow and blowing and drifting snow from high wind.
  Total snow accumulations of up to three inches. Winds gusting 
  as high as 50 mph.

* WHERE...Borah Peak, Clayton and Copper Basin. Frank Church 
  Wilderness and Big Lost Highlands. 

* WHEN...From 11 PM this evening to 5 PM MST Wednesday.

* IMPACTS...Plan on slippery road conditions. Areas of blowing
  snow could significantly reduce visibility. The hazardous
  conditions could impact the morning or evening commute. Gusty
  winds could bring down tree branches. The cold wind chills as
  low as 30 below zero could cause frostbite on exposed skin in 
  as little as 30 minutes.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions can be obtained by calling 5 1 1.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/pocatello
898 
WWUS45 KPIH 211003
WSWPIH

URGENT - WINTER WEATHER MESSAGE
National Weather Service Pocatello ID
303 AM MST Wed Dec 21 2022

IDZ052>054-212200-
/O.UPG.KPIH.WW.Y.0026.000000T0000Z-221222T0000Z/
/O.EXA.KPIH.WS.W.0013.000000T0000Z-221222T0000Z/
/O.CON.KPIH.WC.W.0007.221222T0000Z-221222T1900Z/
Arco/Mud Lake Desert-Upper Snake River Plain-
Lower Snake River Plain-
Including the cities of Mud Lake, INL, Craters of the Moon NM, 
Idaho Falls, Rexburg, St. Anthony, Pocatello, Blackfoot, 
American Falls, Shelley, and Fort Hall
303 AM MST Wed Dec 21 2022

...WINTER STORM WARNING IN EFFECT UNTIL 5 PM MST THIS AFTERNOON...
...WIND CHILL WARNING REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON
TO NOON MST THURSDAY...

* WHAT...For the Winter Storm Warning, periods of moderate to
  heavy snow with areas of blowing and drifting snow creating near
  whiteout conditions at times. Additional snow accumulations up
  to two inches. Winds gusting as high as 65 mph. For the Wind 
  Chill Warning, dangerously cold wind chills expected. Wind 
  chills as low as 45 below zero.

* WHERE...Mud Lake, INL, Craters of the Moon NM, Idaho Falls,
  Rexburg, St. Anthony, Pocatello, Blackfoot, American Falls,
  Shelley, and Fort Hall.

* WHEN...For the Winter Storm Warning, until 5 PM MST this 
  afternoon. For the Wind Chill Warning, from 5 PM this 
  afternoon to noon MST Thursday.

* IMPACTS...Travel could be very difficult to impossible. Areas 
  of blowing snow will significantly reduce visibility. The 
  hazardous conditions will impact the morning or evening commute.
  Strong winds could cause tree damage. The dangerously cold wind
  chills could cause frostbite on exposed skin in as little as 10
  minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Avoid outside activities if possible. When outside, make sure you
wear appropriate clothing, a hat, and gloves. 

The latest road conditions can be obtained by calling 5 1 1 or
by going to 511.idaho.gov.

&&

$$

IDZ069-074-212200-
/O.UPG.KPIH.WW.Y.0026.000000T0000Z-221222T0000Z/
/O.EXA.KPIH.WS.W.0013.000000T0000Z-221222T0000Z/
Lost River Range-Big Lost Highlands/Copper Basin-
Including the cities of Borah Peak and Copper Basin
303 AM MST Wed Dec 21 2022

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

* WHAT...Periods of moderate to heavy snow with areas of blowing 
  and drifting snow creating near whiteout conditions at times. 
  Additional snow accumulations of up to two inches. Winds gusting
  as high as 55 mph.

* WHERE...Lost River Range and Copper Basin region.

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

* IMPACTS...Travel could be very difficult to impossible. Areas 
  of blowing snow will significantly reduce visibility. The 
  hazardous conditions will impact the morning or evening commute.
  Strong winds could cause tree damage. The cold wind chills as 
  low as 30 below zero could cause frostbite on exposed skin in as
  little as 30 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Avoid outside activities if possible. When outside, make sure you
wear appropriate clothing, a hat, and gloves. 

The latest road conditions can be obtained by calling 5 1 1 or
by going to 511.idaho.gov.

&&

$$

IDZ058-062-212200-
/O.EXT.KPIH.WS.W.0013.000000T0000Z-221222T0600Z/
/O.EXT.KPIH.WC.W.0007.221222T0600Z-221222T1900Z/
Marsh and Arbon Highlands-Blackfoot Mountains-
Including the cities of Inkom, McCammon, Downey, 
Lava Hot Springs, Grace, Soda Springs, Henry, and Bone
303 AM MST Wed Dec 21 2022

...WINTER STORM WARNING NOW IN EFFECT UNTIL 11 PM MST THIS
EVENING...
...WIND CHILL WARNING NOW IN EFFECT FROM 11 PM THIS EVENING TO
NOON MST THURSDAY...

* WHAT...For the Winter Storm Warning, periods of moderate to
  heavy snow with areas of blowing and drifting snow creating near
  whiteout conditions at times. Additional snow accumulations of 
  2 to 4 inches and 3 to 6 inches above 7000 feet. Winds gusting 
  as high as 55 mph. For the Wind Chill Warning, dangerously cold 
  wind chills expected. Wind chills as low as 35 below zero.

* WHERE...Inkom, McCammon, Downey, Lava Hot Springs, Grace, Soda
  Springs, Henry, and Bone.

* WHEN...For the Winter Storm Warning, until 11 PM MST this 
  evening. For the Wind Chill Warning, from 11 PM this evening 
  to noon MST Thursday.

* IMPACTS...Travel could be very difficult to impossible. Areas 
  of blowing snow will significantly reduce visibility. The 
  hazardous conditions will impact the morning or evening commute.
  Strong winds could cause tree damage. The dangerously cold wind
  chills could cause frostbite on exposed skin in as little as 10
  minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Avoid outside activities if possible. When outside, make sure you
wear appropriate clothing, a hat, and gloves. 

The latest road conditions can be obtained by calling 5 1 1 or
by going to 511.idaho.gov.

&&

$$

IDZ051-055-212200-
/O.EXT.KPIH.WC.W.0007.221222T0600Z-221222T1900Z/
/O.EXT.KPIH.WW.Y.0026.000000T0000Z-221222T0600Z/
Shoshone/Lava Beds-Eastern Magic Valley-
Including the cities of Shoshone, Richfield, Carey, Burley, 
Rupert, Heyburn, and Oakley
303 AM MST Wed Dec 21 2022

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 11 PM MST THIS
EVENING...
...WIND CHILL WARNING NOW IN EFFECT FROM 11 PM THIS EVENING TO
NOON MST THURSDAY...

* WHAT...For the Wind Chill Warning, dangerously cold wind chills
  expected. Wind chills as low as 35 below zero. For the Winter
  Weather Advisory, periods of moderate snow with areas of 
  blowing and drifting snow. Additional snow accumulations of up 
  to one inch. Winds gusting as high as 50 mph.

* WHERE...Shoshone, Richfield, Carey, Burley, Rupert, Heyburn, and
  Oakley.

* WHEN...For the Wind Chill Warning, from 11 PM this evening to 
  noon MST Thursday. For the Winter Weather Advisory, until 11 
  PM MST this evening.

* IMPACTS...Travel could be difficult. Areas of blowing snow will
  significantly reduce visibility. The hazardous conditions will 
  impact the morning or evening commute. Strong winds could cause 
  tree damage. The dangerously cold wind chills could cause 
  frostbite on exposed skin in as little as 10 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Avoid outside activities if possible. When outside, make sure you
wear appropriate clothing, a hat, and gloves. 

Slow down and use caution while traveling. 

The latest road conditions can be obtained by calling 5 1 1 or
by going to 511.idaho.gov.

&&

$$

IDZ065-066-212200-
/O.CON.KPIH.WS.W.0013.000000T0000Z-221222T0000Z/
/O.CON.KPIH.WC.W.0007.221222T0000Z-221222T1900Z/
Teton Valley-Centennial Mountains - Island Park-
Including the cities of Ashton, Tetonia, Driggs, Island Park, 
and Kilgore
303 AM MST Wed Dec 21 2022

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...
...WIND CHILL WARNING REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON
TO NOON MST THURSDAY...

* WHAT...For the Winter Storm Warning, periods of moderate to
  heavy snow with areas of blowing and drifting snow creating near
  whiteout conditions at times. Additional snow accumulations of 
  3 to 6 inches. Winds gusting as high as 60 mph. For the Wind 
  Chill Warning, dangerously cold wind chills expected. Wind 
  chills as low as 55 below zero.

* WHERE...Ashton, Tetonia, Driggs, Island Park, and Kilgore.

* WHEN...For the Winter Storm Warning, until 5 PM MST this 
  afternoon. For the Wind Chill Warning, from 5 PM this 
  afternoon to noon MST Thursday.

* IMPACTS...Travel could be very difficult to impossible. Areas of
  blowing snow will significantly reduce visibility. The hazardous
  conditions will impact the morning or evening commute. Strong
  winds could cause tree damage. The dangerously cold wind chills
  could cause frostbite on exposed skin in as little as 5 
  minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Avoid outside activities if possible. When outside, make sure you
wear appropriate clothing, a hat, and gloves. 

The latest road conditions can be obtained by calling 5 1 1 or
by going to 511.idaho.gov.

&&

$$

IDZ056-061-212200-
/O.CON.KPIH.WS.W.0013.000000T0000Z-221222T0600Z/
/O.CON.KPIH.WC.W.0007.221222T0600Z-221222T1900Z/
Southern Hills/Albion Mountains-Bear Lake Valley-
Including the cities of Albion, Almo, St. Charles, Montpelier, 
and Georgetown
303 AM MST Wed Dec 21 2022

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...
...WIND CHILL WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING
TO NOON MST THURSDAY...

* WHAT...For the Winter Storm Warning, periods of moderate to
  heavy snow with areas of blowing and drifting snow creating near
  whiteout conditions at times. Additional snow accumulations of 
  1 to 5 inches. Winds gusting as high as 55 mph. For the Wind 
  Chill Warning, dangerously cold wind chills expected. Wind 
  chills as low as 30 below zero.

* WHERE...Albion, Almo, St. Charles, Montpelier, and Georgetown.

* WHEN...For the Winter Storm Warning, until 11 PM MST this 
  evening. For the Wind Chill Warning, from 11 PM this evening 
  to noon MST Thursday.

* IMPACTS...Travel could be very difficult to impossible. Areas 
  of blowing snow will significantly reduce visibility. The 
  hazardous conditions will impact the morning or evening commute.
  Strong winds could cause tree damage. The dangerously cold wind 
  chills could cause frostbite on exposed skin in as little as 
  10 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Avoid outside activities if possible. When outside, make sure you
wear appropriate clothing, a hat, and gloves. 

The latest road conditions can be obtained by calling 5 1 1 or
by going to 511.idaho.gov.

&&

$$

IDZ067-068-070-073-075-212200-
/O.CON.KPIH.WC.W.0007.221222T0000Z-221222T1900Z/
/O.CON.KPIH.WW.Y.0026.000000T0000Z-221222T0000Z/
Beaverhead - Lemhi Highlands-Lost River Valley-
Challis/Pahsimeroi Valleys-Sun Valley Region-Wood River Foothills-
Including the cities of Dubois, Spencer, Edie School, Small, 
Howe, Arco, Mackay, Chilly, Challis, Ketchum, Sun Valley, Galena,
Hailey, Bellevue, and Picabo
303 AM MST Wed Dec 21 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...
...WIND CHILL WARNING REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON
TO NOON MST THURSDAY...

* WHAT...For the Wind Chill Warning, dangerously cold wind chills
  expected. Wind chills as low as 50 below zero. For the Winter
  Weather Advisory, periods of moderate snow with areas of blowing
  and drifting snow. Additional snow accumulations of up to two 
  inches. Winds gusting as high as 55 mph.

* WHERE...Dubois, Spencer, Edie School, Small, Howe, Arco, Mackay,
  Chilly, Challis, Ketchum, Sun Valley, Galena, Hailey, Bellevue,
  and Picabo. 

* WHEN...For the Wind Chill Warning, from 5 PM this afternoon to 
  noon MST Thursday. For the Winter Weather Advisory, until 5 PM 
  MST this afternoon.

* IMPACTS...Travel could be difficult. Areas of blowing snow will
  significantly reduce visibility. The hazardous conditions will
  impact the morning or evening commute. Strong winds could cause
  tree damage. The dangerously cold wind chills could cause
  frostbite on exposed skin in as little as 5 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Avoid outside activities if possible. When outside, make sure you
wear appropriate clothing, a hat, and gloves. 

Slow down and use caution while traveling. 

The latest road conditions can be obtained by calling 5 1 1 or
by going to 511.idaho.gov.

&&

$$

IDZ057-059-212200-
/O.CON.KPIH.WC.W.0007.221222T0600Z-221222T1900Z/
/O.CON.KPIH.WW.Y.0026.000000T0000Z-221222T0600Z/
Raft River Region-Franklin/Eastern Oneida Region-
Including the cities of Malta, Rockland, Holbrook, Malad, 
Preston, and Thatcher
303 AM MST Wed Dec 21 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...
...WIND CHILL WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING
TO NOON MST THURSDAY...

* WHAT...For the Wind Chill Warning, dangerously cold wind chills
  expected. Wind chills as low as 30 below zero. For the Winter
  Weather Advisory, periods of moderate snow with areas of blowing
  and drifting snow. Additional snow accumulations of up to 3 
  inches. Winds gusting as high as 55 mph.

* WHERE...Malta, Rockland, Holbrook, Malad, Preston, and Thatcher.

* WHEN...For the Wind Chill Warning, from 11 PM this evening to 
  noon MST Thursday. For the Winter Weather Advisory, until 11 
  PM MST this evening.

* IMPACTS...Travel could be difficult. Areas of blowing snow will
  significantly reduce visibility. The hazardous conditions will
  impact the morning or evening commute. Strong winds could cause
  tree damage. The cold wind chills could cause frostbite on 
  exposed skin in as little as 30 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Avoid outside activities if possible. When outside, make sure you
wear appropriate clothing, a hat, and gloves. 

Slow down and use caution while traveling. 

The latest road conditions can be obtained by calling 5 1 1 or
by going to 511.idaho.gov.

&&

$$

IDZ063-064-072-212200-
/O.CON.KPIH.WS.W.0013.000000T0000Z-221222T0000Z/
Caribou Range-Big Hole Mountains-Sawtooth/Stanley Basin-
Including the cities of Wayan, Swan Valley, Victor, and Stanley
303 AM MST Wed Dec 21 2022

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...

* WHAT...Periods of moderate to heavy snow with areas of blowing
  and drifting snow creating near whiteout conditions at times. 
  Additional snow accumulations of 2 to 6 inches. Winds gusting as
  high as 60 mph.

* WHERE...Wayan, Swan Valley, Victor, and Stanley.

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

* IMPACTS...Travel could be very difficult to impossible. Areas of
  blowing snow will significantly reduce visibility. The hazardous
  conditions will impact the morning or evening commute. Strong
  winds could cause tree damage. The dangerously cold wind chills
  could cause frostbite on exposed skin in as little as 30 
  minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Avoid outside activities if possible. When outside, make sure you
wear appropriate clothing, a hat, and gloves. 

The latest road conditions can be obtained by calling 5 1 1 or
by going to 511.idaho.gov.

&&

$$

IDZ060-212200-
/O.CON.KPIH.WS.W.0014.000000T0000Z-221222T0600Z/
Bear River Range-
Including the city of Emigration Summit
303 AM MST Wed Dec 21 2022

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...

* WHAT...Periods of moderate to heavy snow with areas of blowing
  and drifting snow creating near whiteout conditions at times.
  Additional snow accumulations of 4 to 6 inches, except 6 to 12 
  inches on ridge tops and elevations above passes. Winds gusting 
  as high as 60 mph.

* WHERE...Bear River Range including Emigration Summit.

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

* IMPACTS...Travel could be very difficult to impossible. Areas of
  blowing snow will significantly reduce visibility. The hazardous
  conditions will impact the morning or evening commute. Strong
  winds could cause tree damage. The dangerously cold wind chills
  could cause frostbite on exposed skin in as little as 30
  minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Avoid outside activities if possible. When outside, make sure you
wear appropriate clothing, a hat, and gloves. 

The latest road conditions can be obtained by calling 5 1 1 or
by going to 511.idaho.gov.

&&

$$

IDZ071-212200-
/O.CON.KPIH.WW.Y.0026.000000T0000Z-221222T0000Z/
Frank Church Wilderness-
Including the city of Clayton
303 AM MST Wed Dec 21 2022

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

* WHAT...Periods of moderate snow with areas of blowing and
  drifting snow.. Additional snow accumulations of up to one inch.
  Winds gusting as high as 50 mph.

* WHERE...Clayton.

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

* IMPACTS...Travel could be difficult. Areas of blowing snow will
  significantly reduce visibility. The hazardous conditions will
  impact the morning or evening commute. Strong winds could cause
  tree damage. The cold wind chills as low as 25 below zero could
  cause frostbite on exposed skin in as little as 30 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

Avoid outside activities if possible. When outside, make sure you
wear appropriate clothing, a hat, and gloves. 

The latest road conditions can be obtained by calling 5 1 1 or
by going to 511.idaho.gov.

&&

$$

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

MacKay
344 
WWUS45 KPIH 212046
WSWPIH

URGENT - WINTER WEATHER MESSAGE
National Weather Service Pocatello ID
146 PM MST Wed Dec 21 2022

IDZ052-053-065-066-220615-
/O.CAN.KPIH.WS.W.0013.000000T0000Z-221222T0000Z/
/O.CON.KPIH.WC.W.0007.221222T0000Z-221222T1900Z/
Arco/Mud Lake Desert-Upper Snake River Plain-Teton Valley-
Centennial Mountains - Island Park-
Including the cities of Mud Lake, INL, Craters of the Moon NM, 
Idaho Falls, Rexburg, St. Anthony, Ashton, Tetonia, Driggs, 
Island Park, and Kilgore
146 PM MST Wed Dec 21 2022

...WIND CHILL WARNING REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON
TO NOON MST THURSDAY...

...WINTER STORM WARNING IS CANCELLED...

* WHAT...For the Wind Chill Warning, dangerously cold wind chills
  expected. Wind chills as low as 50 below zero, especially along
  the Montana Divide.

* WHERE...Mud Lake, INL, Craters of the Moon, Idaho Falls,
  Rexburg, St. Anthony, Ashton, Tetonia, Driggs, Island Park and
  Kilgore.

* WHEN...From 5 PM this afternoon to noon MST Thursday.

* IMPACTS...The dangerously cold wind chills could cause 
  frostbite on exposed skin in as little as 10 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Avoid outside activities if possible. When outside, make sure you
wear appropriate clothing, a hat, and gloves. 

&&

$$

IDZ054-220615-
/O.CAN.KPIH.WS.W.0013.000000T0000Z-221222T0000Z/
/O.EXT.KPIH.WC.W.0007.221222T0600Z-221222T1900Z/
Lower Snake River Plain-
Including the cities of Pocatello, Blackfoot, American Falls, 
Shelley, and Fort Hall
146 PM MST Wed Dec 21 2022

...WIND CHILL WARNING NOW IN EFFECT FROM 11 PM THIS EVENING TO
NOON MST THURSDAY...

...WINTER STORM WARNING IS CANCELLED...

* WHAT...For the Wind Chill Warning, dangerously cold wind chills
  expected. Wind chills as low as 30 below zero.

* WHERE...Pocatello, Blackfoot, American Falls, Shelly, and Fort
  Hall.

* WHEN...From 11 PM this evening to noon MST Thursday.

* IMPACTS...The dangerously cold wind chills could cause 
  frostbite on exposed skin in as little as 10 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Avoid outside activities if possible. When outside, make sure you
wear appropriate clothing, a hat, and gloves. 

&&

$$

IDZ064-069-072-074-212200-
/O.CAN.KPIH.WS.W.0013.000000T0000Z-221222T0000Z/
Big Hole Mountains-Lost River Range-Sawtooth/Stanley Basin-
Big Lost Highlands/Copper Basin-
Including the cities of Victor, Borah Peak, Stanley, 
and Copper Basin
146 PM MST Wed Dec 21 2022

...WINTER STORM WARNING IS CANCELLED...

Lingering light snow is still occurring. Less than one inch of
additional snow is expected. Winds have switched to northerly
around 10 mph gusting to 20 mph. Expect very cold temperatures to
move across the area with wind chills as low as 40 below zero by 
tomorrow morning.

$$

IDZ051-055-220615-
/O.CAN.KPIH.WW.Y.0026.000000T0000Z-221222T0600Z/
/O.CON.KPIH.WC.W.0007.221222T0600Z-221222T1900Z/
Shoshone/Lava Beds-Eastern Magic Valley-
Including the cities of Shoshone, Richfield, Carey, Burley, 
Rupert, Heyburn, and Oakley
146 PM MST Wed Dec 21 2022

...WIND CHILL WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING
TO NOON MST THURSDAY...

...WINTER WEATHER ADVISORY IS CANCELLED...

* WHAT...For the Wind Chill Warning, dangerously cold wind chills
  expected. Wind chills as low as 35 below zero. 

* WHERE..Shoshone, Richfield, Carey, Burley, Rupert, Heyburn and
  Oakley.

* WHEN...From 11 PM this evening to noon MST Thursday.

* IMPACTS...The dangerously cold wind chills could cause 
  frostbite on exposed skin in as little as 10 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Avoid outside activities if possible. When outside, make sure you
wear appropriate clothing, a hat, and gloves. 

&&

$$

IDZ067-068-070-073-075-220615-
/O.CAN.KPIH.WW.Y.0026.000000T0000Z-221222T0000Z/
/O.CON.KPIH.WC.W.0007.221222T0000Z-221222T1900Z/
Beaverhead - Lemhi Highlands-Lost River Valley-
Challis/Pahsimeroi Valleys-Sun Valley Region-Wood River Foothills-
Including the cities of Dubois, Spencer, Edie School, Small, 
Howe, Arco, Mackay, Chilly, Challis, Ketchum, Sun Valley, Galena,
Hailey, Bellevue, and Picabo
146 PM MST Wed Dec 21 2022

...WIND CHILL WARNING REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON
TO NOON MST THURSDAY...

...WINTER WEATHER ADVISORY IS CANCELLED...

* WHAT...For the Wind Chill Warning, dangerously cold wind chills
  expected. Wind chills as low as 40 below zero. 

* WHERE...Dubois, Spencer, Edie School, Small, Howe, Arco, 
  Mackay, Chilly, Challis, Ketchum, Sun Valley, Galena, Hailey, 
  Bellevue, and Picabo

* WHEN...From 5 PM this afternoon to noon MST Thursday.

* IMPACTS...The dangerously cold wind chills could cause 
  frostbite on exposed skin in as little as 5 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Avoid outside activities if possible. When outside, make sure you
wear appropriate clothing, a hat, and gloves. 

&&

$$

IDZ071-212200-
/O.CAN.KPIH.WW.Y.0026.000000T0000Z-221222T0000Z/
Frank Church Wilderness-
Including the city of Clayton
146 PM MST Wed Dec 21 2022

...WINTER WEATHER ADVISORY IS CANCELLED...

Snow has ended. Winds are still breezy, northerly with gusts up to
around 35 mph. Winds will back off gradually through the evening.
Very cold temperatures will move across the area with wind chills
as low as 45 below zero. 

$$

IDZ063-220600-
/O.EXT.KPIH.WS.W.0013.000000T0000Z-221222T0600Z/
Caribou Range-
Including the cities of Wayan and Swan Valley
146 PM MST Wed Dec 21 2022

...WINTER STORM WARNING NOW IN EFFECT UNTIL 11 PM MST THIS
EVENING...

* WHAT...Periods of light to moderate snow with areas of blowing 
  and drifting snow creating near whiteout conditions at times. 
  Additional snow accumulations of 1 to 3 inches. Winds gusting as
  high as 50 mph.

* WHERE...Wayan and Swan Valley.

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

* IMPACTS...Travel could be very difficult to impossible. Areas 
  of blowing snow will significantly reduce visibility. The 
  hazardous conditions will impact the morning or evening 
  commute. Strong winds could cause tree damage. The dangerously 
  cold wind chills could cause frostbite on exposed skin in as 
  little as 30 minutes.

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 can be obtained by calling 5 1 1.

&&

$$

IDZ056-058-061-062-220615-
/O.CON.KPIH.WS.W.0013.000000T0000Z-221222T0600Z/
/O.CON.KPIH.WC.W.0007.221222T0600Z-221222T1900Z/
Southern Hills/Albion Mountains-Marsh and Arbon Highlands-
Bear Lake Valley-Blackfoot Mountains-
Including the cities of Albion, Almo, Inkom, McCammon, Downey, 
Lava Hot Springs, St. Charles, Montpelier, Georgetown, Grace, 
Soda Springs, Henry, and Bone
146 PM MST Wed Dec 21 2022

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...

...WIND CHILL WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING
TO NOON MST THURSDAY...

* WHAT...For the Winter Storm Warning, periods of light to
  moderate snow with areas of blowing and drifting snow creating
  near whiteout conditions at times. Additional snow accumulations
  of 1 to 4 inches. Winds gusting as high as 55 mph. 

  For the Wind Chill Warning, dangerously cold wind chills 
  expected. Wind chills as low as 30 below zero.

* WHERE...Albion, Almo, Inkom, McCammon, Downey, Lava Hot 
  Springs, St. Charles, Montpelier, Georgetown, Grace, Soda 
  Springs, Henry, and Bone

* WHEN...For the Winter Storm Warning, until 11 PM MST this 
  evening. 
  
  For the Wind Chill Warning, from 11 PM this evening to noon
  MST Thursday.

* IMPACTS...Travel could be very difficult to impossible. Areas of
  blowing snow will significantly reduce visibility. The hazardous
  conditions will impact the evening commute. Strong winds could 
  cause tree damage. The dangerously cold wind chills could cause 
  frostbite on exposed skin in as little as 10 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Avoid outside activities if possible. When outside, make sure you
wear appropriate clothing, a hat, and gloves. 

The latest road conditions can be obtained by calling 5 1 1.

&&

$$

IDZ057-059-220615-
/O.CON.KPIH.WC.W.0007.221222T0600Z-221222T1900Z/
/O.CON.KPIH.WW.Y.0026.000000T0000Z-221222T0600Z/
Raft River Region-Franklin/Eastern Oneida Region-
Including the cities of Malta, Rockland, Holbrook, Malad, 
Preston, and Thatcher
146 PM MST Wed Dec 21 2022

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

...WIND CHILL WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING
TO NOON MST THURSDAY...

* WHAT...For the Winter Weather Advisory, periods of light snow 
  with areas of blowing and drifting snow. Additional snow 
  accumulations of up to 3 inches. Winds gusting as high as 55 
  mph.

  For the Wind Chill Warning, dangerously cold wind chills 
  expected. Wind chills as low as 30 below zero. 

* WHERE...Malta, Rockland, Holbrook, Malad, Preston, and 
  Thatcher.

* WHEN...For the Wind Chill Warning, from 11 PM this evening to 
  noon MST Thursday. For the Winter Weather Advisory, until 11 
  PM MST this evening.

* IMPACTS...Travel could be difficult. Areas of blowing snow will
  significantly reduce visibility. The hazardous conditions will
  impact the evening commute. Strong winds could cause tree 
  damage. The cold wind chills could cause frostbite on exposed 
  skin in as little as 30 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Avoid outside activities if possible. When outside, make sure you
wear appropriate clothing, a hat, and gloves. 

Slow down and use caution while traveling. 

The latest road conditions can be obtained by calling 5 1 1.

&&

$$

IDZ060-220600-
/O.CON.KPIH.WS.W.0014.000000T0000Z-221222T0600Z/
Bear River Range-
Including the city of Emigration Summit
146 PM MST Wed Dec 21 2022

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...

* WHAT...Periods of moderate to heavy snow with areas of blowing
  and drifting snow creating near whiteout conditions at times.
  Additional snow accumulations of 2 to 5 inches. Winds gusting 
  as high as 60 mph.

* WHERE...Bear River Range including Emigration Summit.

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

* IMPACTS...Travel could be very difficult to impossible. Areas of
  blowing snow will significantly reduce visibility. The hazardous
  conditions will impact the evening commute. Strong winds could 
  cause tree damage. The dangerously cold wind chills could cause 
  frostbite on exposed skin in as little as 30 minutes.

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 can be obtained by calling 5 1 1.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/pocatello
976 
WWUS45 KPIH 220403
WSWPIH

URGENT - WINTER WEATHER MESSAGE
National Weather Service Pocatello ID
903 PM MST Wed Dec 21 2022

IDZ056-058-061-062-221215-
/O.CAN.KPIH.WS.W.0013.000000T0000Z-221222T0600Z/
/O.CON.KPIH.WC.W.0007.221222T0600Z-221222T1900Z/
Southern Hills/Albion Mountains-Marsh and Arbon Highlands-
Bear Lake Valley-Blackfoot Mountains-
Including the cities of Albion, Almo, Inkom, McCammon, Downey, 
Lava Hot Springs, St. Charles, Montpelier, Georgetown, Grace, 
Soda Springs, Henry, and Bone
903 PM MST Wed Dec 21 2022

...WIND CHILL WARNING REMAINS IN EFFECT UNTIL NOON MST THURSDAY...
...WINTER STORM WARNING IS CANCELLED...

* WHAT...Dangerously cold wind chills expected. Wind chills as low
  as 30 below zero.

* WHERE....Albion, Almo, Inkom, McCammon, Downey, Lava Hot 
  Springs, St. Charles, Montpelier, Georgetown, Grace, Soda 
  Springs, Henry, and Bone

* WHEN...Until noon MST Thursday.

* IMPACTS...The dangerously cold wind chills could cause 
  frostbite on exposed skin in as little as 10 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Avoid outside activities if possible. When outside, make sure you
wear appropriate clothing, a hat, and gloves. 

&&

$$

IDZ060-220515-
/O.CAN.KPIH.WS.W.0014.000000T0000Z-221222T0600Z/
Bear River Range-
Including the city of Emigration Summit
903 PM MST Wed Dec 21 2022

...WINTER STORM WARNING IS CANCELLED...

Snow has weakened and winds continue to subside across the region.
Therefore the Winter Storm Warning has been cancelled. Gusty 
winds overnight may continue to produce localized areas of blowing
snow. Travelers are urged to remain cautious, and stay prepared 
for continued winter driving conditions.

$$

IDZ063-220515-
/O.CAN.KPIH.WS.W.0013.000000T0000Z-221222T0600Z/
Caribou Range-
Including the cities of Wayan and Swan Valley
903 PM MST Wed Dec 21 2022

...WINTER STORM WARNING IS CANCELLED...

Snow has weakened and winds continue to subside across the region.
Therefore the Winter Storm Warning has been cancelled. Gusty 
winds overnight may continue to produce localized areas of blowing
snow. Travelers are urged to remain cautious, and stay prepared 
for continued winter driving conditions..

$$

IDZ057-059-221215-
/O.CAN.KPIH.WW.Y.0026.000000T0000Z-221222T0600Z/
/O.CON.KPIH.WC.W.0007.221222T0600Z-221222T1900Z/
Raft River Region-Franklin/Eastern Oneida Region-
Including the cities of Malta, Rockland, Holbrook, Malad, 
Preston, and Thatcher
903 PM MST Wed Dec 21 2022

...WIND CHILL WARNING REMAINS IN EFFECT UNTIL NOON MST THURSDAY...
...WINTER WEATHER ADVISORY IS CANCELLED...

* WHAT...Dangerously cold wind chills are expected. Wind chills as
  low as 30 below zero. 

* WHERE...Malta, Rockland, Holbrook, Malad, Preston, and 
  Thatcher.

* WHEN...Until noon MST Thursday.

* IMPACTS...The cold wind chills could cause frostbite on exposed
  skin in as little as 30 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Avoid outside activities if possible. When outside, make sure you
wear appropriate clothing, a hat, and gloves. 

&&

$$

IDZ052-053-065>068-070-073-075-221215-
/O.CON.KPIH.WC.W.0007.000000T0000Z-221222T1900Z/
Arco/Mud Lake Desert-Upper Snake River Plain-Teton Valley-
Centennial Mountains - Island Park-Beaverhead - Lemhi Highlands-
Lost River Valley-Challis/Pahsimeroi Valleys-Sun Valley Region-
Wood River Foothills-
Including the cities of Mud Lake, INL, Craters of the Moon NM, 
Idaho Falls, Rexburg, St. Anthony, Ashton, Tetonia, Driggs, 
Island Park, Kilgore, Dubois, Spencer, Edie School, Small, Howe, 
Arco, Mackay, Chilly, Challis, Ketchum, Sun Valley, Galena, 
Hailey, Bellevue, and Picabo
903 PM MST Wed Dec 21 2022

...WIND CHILL WARNING REMAINS IN EFFECT UNTIL NOON MST THURSDAY...

* WHAT...For the Wind Chill Warning, dangerously cold wind 
  chills expected. Wind chills as low as 50 below zero, 
  especially along the Montana Divide.

* WHERE...Mud Lake, INL, Craters of the Moon, Idaho Falls, 
  Rexburg, St. Anthony, Ashton, Tetonia, Driggs, Island Park and 
  Kilgore.

* WHEN...Until noon MST Thursday.

* IMPACTS...The dangerously cold wind chills could cause 
  frostbite on exposed skin in as little as 10 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Avoid outside activities if possible. When outside, make sure you
wear appropriate clothing, a hat, and gloves. 

&&

$$

IDZ051-054-055-221215-
/O.CON.KPIH.WC.W.0007.221222T0600Z-221222T1900Z/
Shoshone/Lava Beds-Lower Snake River Plain-Eastern Magic Valley-
Including the cities of Shoshone, Richfield, Carey, Pocatello, 
Blackfoot, American Falls, Shelley, Fort Hall, Burley, Rupert, 
Heyburn, and Oakley
903 PM MST Wed Dec 21 2022

...WIND CHILL WARNING REMAINS IN EFFECT UNTIL NOON MST THURSDAY...

* WHAT...For the Wind Chill Warning, dangerously cold wind 
  chills expected. Wind chills as low as 35 below zero.

* WHERE...Shoshone, Richfield, Carey, Pocatello, Blackfoot, 
  American Falls, Shelley, Fort Hall, Burley, Rupert, Heyburn, and
  Oakley.

* WHEN...From 11 PM this evening to noon MST Thursday.

* IMPACTS...The dangerously cold wind chills could cause 
  frostbite on exposed skin in as little as 10 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Avoid outside activities if possible. When outside, make sure you
wear appropriate clothing, a hat, and gloves. 

&&

$$

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

What forecasters said that day

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

NWS Pocatello, ID wrote its last area forecast discussion before this winter storm warning went out at Dec 19, 2:46 AM MST, 11 hours 53 minutes earlier.

Area forecast discussion, Dec 19, 2:46 AM MST, 11 hours 53 minutes before
Area Forecast Discussion
National Weather Service Pocatello ID
246 AM MST Mon Dec 19 2022

.SHORT TERM...Today through Tuesday night. A broad upper level
trough is positioned over the PAC NW this morning with a parent
upper low spinning in Alberta. Moisture could arrive in the Central
Mountains as early as this afternoon, but most high-res models are
suggesting snow onset will be later this evening. There is enough
upslope forcing to justify some slight chance PoPs today. Either
way, snowfall amounts should be light. NBM 4.1 shows only a 25 to 30
percent probability of 2+ inches in the Sawtooth Range through
Tuesday afternoon. Similarly along the Big Hole and Centennial
Mountains, upslope flow will result in light snowfall this afternoon
with about a 20 to 25 probability of 2+ inches there. On Tuesday
night, a strong shortwave will rotate around the upper trough and
deepen across the PAC NW. As a result, snow will begin to intensify
somewhat, mainly over the higher terrain, and will expand more
broadly to lower elevations late Tuesday night.

Wind chill temperatures remain in the 20 to 30 below range across
the Arco Desert and adjacent valleys at forecast issuance. Current
wind chill warning is ongoing through 10 AM today. Hinsberger

.LONG TERM...Wednesday through Monday.
A strong Canadian low will be starting to drop southward on Wednesday
into the Plains. This will help pull moisture south through our area
on Wednesday and bring much stronger winds, too. Not only will we see
snow and wind, but this system opens up the door for a blast of
frigid air behind it on Thursday. Starting with snow on Wednesday,
the highest totals are still expected in the mountains. By the time
snow is tapering off on Thursday, the NBM 4.1 highlights a 40-65
percent chance of at least 8 inches of snow in the Sawtooths, Bear
River Range, and Big Hole mountains. In the Snake Plain, we are
looking at about a 15-25 percent chance of at least 2 inches of
snow. Then, we have the wind. We can expect fairly widespread gusts
of 25-35kts, at least, with higher gusts definitely not out of the
question. In fact, the NBM 4.1 shows a 40-60 percent chance of gusts
greater than 48kts in the Snake Plain on Wednesday. The uncertainty
or current discrepancy between potential versus forecast gusts lies
within how well we can get winds to mix down to the surface.

After the snow and wind on Wednesday, we get the frigid cold on
Thursday. Almost everyone will start Thursday morning below zero. A
few spots in the western Magic Valley and southern most Southern
Hills could stay a couple of degrees above zero, but those will be
the warmest spots. Expect temperatures closer to negative 15-25
anywhere north of Idaho Falls. Wind chills will be even worse,
ranging from negative 20 degrees near Idaho Falls to almost negative
40 near the Island Park area. Wind Chill Warnings will likely be
needed across much of the area. Thankfully, this cold blast is short-
lived as we begin to warm up on Friday and highs head towards the
upper 20s to mid 30s by Christmas day.

The ECMWF and GFS begin to disagree more as we get into Friday and
beyond with the GFS bringing a shortwave through and some more
moisture on Friday which the ECMWF is not nearly as excited about at
this time. Weak ridging builds in on Saturday, drying us out a bit
before another push of moisture arrives arrives in the first half of
next week. It would be beneficial to any holiday travel plans to see
some dry time Saturday through Monday, so we will stay cautiously
optimistic at this time. AMM

.Aviation... This morning we are dealing with more BR and HZ than
FZFG like yesterday. As such, conditions have generally been
VFR/MVFR, but briefly dropping to IFR at times at IDA and PIH. This
will continue through the morning with overall VFR/MVFR conditions
after 16Z at all sites. Any snow today mostly stays in the higher
elevations, so will keep VCSH at DIJ throughout until around 01-02Z
timeframe when light snow looks more likely and impactful, dropping
VIS to borderline MVFR/IFR conditions. Any light snow at SUN in the
same time frame looks light enough to keep VFR conditions, at least
through this forecast period. Will introduce some VCSH around the
same time at BYI, PIH, and IDA, though confidence is lower. There is
quite a bit of dry air to get through for any snow to reach the
ground with more moisture not arriving until Tuesday. Winds today
won't be too impactful with gusts around 15kts possible. AMM

&&

.HYDROLOGY...
...Extreme Cold Temperatures May Cause River Icing and Rising River
and Stream Flows...

With single-digit temperatures forecast in the coming week, rivers
and streams will continue to ice over. As ice buildup moves
downstream, it may cause rapid rise in water levels. As temperatures
begin to rise, ice may continue to move downstream.

People are urged to use caution along rivers and streams as the
rapid increase in flows are dangerous. Keep children and pets away
from riverbanks. Those living or recreating near rivers and streams
should remain cautious. High stream flows can quickly overpower you
and cold water could can lead to hypothermia in minutes.

&&

.PIH WATCHES/WARNINGS/ADVISORIES...
Wind Chill Warning until 10 AM MST this morning for IDZ052-068.

&&

The office that day

Everything else NWS Pocatello, ID issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 19, 2:39 PM MSTWinter Weather AdvisoryPIHBlaine, Clark, Custer, Fremont, Teton21 hr

Nearby

Winter Storm Warnings in Idaho, 2022Every winter storm 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.