044
WWUS45 KPIH 242009
WSWPIH

URGENT - WINTER WEATHER MESSAGE
National Weather Service Pocatello ID
109 PM MST Wed Dec 24 2025

IDZ073-074-251200-
/O.CON.KPIH.WS.W.0011.000000T0000Z-251226T0000Z/
Sun Valley Region-Big Lost Highlands/Copper Basin-
Including the cities of Copper Basin, Galena, Ketchum, and Sun
Valley
109 PM MST Wed Dec 24 2025

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

* WHAT...Heavy snow expected. Total snow accumulations of around 5
  inches to 1 foot at elevations 6500 feet to 8000 feet. Above 8000
  feet expect 1 to 2 feet of snow. For highest peaks, up to 3 feet
  of snow is likely. For Galena Summit about 1 foot of snow is
  expected. Accumulations in Ketchum and Sun Valley will be much
  lower at 2 inches or less. Winds gusting as high as 35 MPH.

* WHERE...Big Lost Highlands/Copper Basin and Sun Valley Region.

* WHEN...Until 5 PM MST Thursday.

* IMPACTS...Travel could be very difficult to impossible, mainly
  over Galena Summit and in backcountry areas. Expect blowing and
  drifting snow.

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.

&&

$$

IDZ069-071-072-251200-
/O.CON.KPIH.WW.Y.0022.000000T0000Z-251226T0000Z/
Lost River Range-Frank Church Wilderness-Sawtooth/Stanley Basin-
Including the cities of Stanley, Clayton, and Borah Peak
109 PM MST Wed Dec 24 2025

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

* WHAT...Moderate to heavy snow expected. Total snow accumulations
  of around 5 inches to 1 foot at elevations 6500 feet to 8000 feet.
  For highest peaks expect 1 to 2 feet of snow. Accumulations in
  Stanley and Clayton will be much lower at 2 inches or less. Winds
  gusting as high as 35 MPH.

* WHERE...Frank Church Wilderness, Lost River Range, and
  Sawtooth/Stanley Basin.

* WHEN...Until 5 PM MST Thursday.

* IMPACTS...Travel could be very difficult above 6500 feet,
  including in backcountry areas.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. Call 5 1 1 or visit
511.idaho.gov for the latest road conditions.

&&

$$

Visit weather.gov/pocatello for more information.

Messick