Winter Storm Warning

URGENT - WINTER WEATHER MESSAGE
National Weather Service Pocatello ID
143 PM MST Fri Dec 5 2025

IDZ058>066-061200-
/O.CON.KPIH.WS.W.0008.000000T0000Z-251206T1200Z/
Marsh and Arbon Highlands-Franklin/Eastern Oneida Region-Bear
River Range-Bear Lake Valley-Blackfoot Mountains-Caribou Range-
Big Hole Mountains-Teton Valley-Centennial Mountains - Island
Park-
Including the cities of Malad, Thatcher, McCammon, Tetonia,
Inkom, Downey, Victor, Ashton, Montpelier, Lava Hot Springs,
Grace, Swan Valley, Emigration Summit, Georgetown, Island Park,
Driggs, Wayan, Bone, Soda Springs, Henry, St. Charles, Preston,
and Kilgore
143 PM MST Fri Dec 5 2025

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

* WHAT...Heavy snow generally above valley floors. Additional snow
  accumulations of 6 to 10 inches above 6500 ft elevation. The Bear
  River and Caribou Ranges could see additional accumulations of 12
  to 18 inches. Very gusty winds overnight may cause areas of
  blowing and drifting snowfall.

* WHERE...Big Hole Mountains, Centennial Mountains - Island Park,
  Teton Valley, Bear Lake Valley, Bear River Range, Blackfoot
  Mountains, Caribou Range, Franklin/Eastern Oneida Region, and
  Marsh and Arbon Highlands.

* WHEN...Until 5 AM MST Saturday.

* IMPACTS...Travel could be very difficult to impossible. The
  hazardous conditions could impact the Friday 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. Call 5 1 1 or visit
511.idaho.gov for the latest road conditions.

&&

$$

URGENT - WINTER WEATHER MESSAGE
National Weather Service Salt Lake City UT
1059 AM MST Fri Dec 5 2025

UTZ108-060900-
/O.CON.KSLC.WS.W.0007.000000T0000Z-251207T1200Z/
Wasatch Back-
Including the following locations - Huntsville, Heber City, and
Park City
1059 AM MST Fri Dec 5 2025

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

* WHAT...Heavy snow expected. Total snow accumulations between 6 to
  16 inches above 5500 feet, 2 to 6 inches below 5500 feet.

* WHERE...Wasatch Back.

* WHEN...Until 5 AM MST Sunday.

* IMPACTS...Winter driving conditions can be expected on most
  routes, especially those in the Park City area and during the
  Friday morning and evening commutes.

* ADDITIONAL DETAILS...Two scenarios exist for this storm across the
  Wasatch Back regarding precipitation type. If temperatures remain
  near to below freezing through Friday evening below 5500 feet,
  snow accumulations will be at the higher range. If temperatures
  warm above freezing Friday morning, accumulations below 5500 feet
  will shift toward the lower end of the range.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. For winter road conditions
from the Utah Department of Transportation, visit
http://www.udottraffic.utah.gov.

For graphical depictions of the snowfall forecast, including
Official NWS Forecast, High End Amount, and Low End Amount, visit
weather.gov/slc/winter.

&&

$$

URGENT - WINTER WEATHER MESSAGE
National Weather Service Salt Lake City UT
1059 AM MST Fri Dec 5 2025

UTZ112-113-117-060900-
/O.CON.KSLC.WS.W.0007.000000T0000Z-251207T1200Z/
Western Uinta Mountains-Wasatch Plateau/Book Cliffs-Central
Mountains-
Including the following locations - Mirror Lake Highway, Indian
Canyon, Joes Valley, Scofield, Cove Fort, Fish Lake, and Moon
Lake
1059 AM MST Fri Dec 5 2025

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

* WHAT...Heavy snow expected. Total snow accumulations of 1 to 2
  feet, except 4 to 8 inches south of Manti.

* WHERE...Central Mountains, Wasatch Plateau/Book Cliffs, and
  Western Uinta Mountains.

* WHEN...Until 5 AM MST Sunday.

* IMPACTS...Winter driving conditions can be expected on all
  mountain routes with significant impacts to conditions on Soldier
  Summit.


* ADDITIONAL DETAILS...The heaviest period of snow will be Friday
  evening into Saturday morning, with rates exceeding 1 to 2 inches
  per hour at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. For winter road conditions
from the Utah Department of Transportation, visit
http://www.udottraffic.utah.gov.

For graphical depictions of the snowfall forecast, including
Official NWS Forecast, High End Amount, and Low End Amount, visit
weather.gov/slc/winter.

&&

$$

URGENT - WINTER WEATHER MESSAGE
National Weather Service Salt Lake City UT
1059 AM MST Fri Dec 5 2025

UTZ110-111-060900-
/O.CON.KSLC.WS.W.0007.000000T0000Z-251207T1200Z/
Wasatch Mountains I-80 North-Wasatch Mountains South of I-80-
Including the following locations - Brighton, Alta, Mantua, and
Logan Summit
1059 AM MST Fri Dec 5 2025

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

* WHAT...Heavy snow. Total snow accumulations between 1 and 3 feet.

* WHERE...The Wasatch Mountains.

* WHEN...Until 5 AM MST Sunday.

* IMPACTS...Winter driving conditions can be expected on all
  mountain routes. Traction restrictions are likely. Very low
  visibility in blowing and drifting snow is likely near Logan
  Summit.

* ADDITIONAL DETAILS...The heaviest period of snow will be Friday
  evening into Saturday morning, with rates exceeding 2 inches per
  hour at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. For winter road conditions
from the Utah Department of Transportation, visit
http://www.udottraffic.utah.gov.

For graphical depictions of the snowfall forecast, including
Official NWS Forecast, High End Amount, and Low End Amount, visit
weather.gov/slc/winter.

&&

$$