winterstormwarning.com

Winter Storm Warning, Idaho

Severe

Another up to 6 inches of snow, gusts up to 55 mph. Plan on slippery road conditions.

Ended Friday, December 19, 2025.

Issued
Expires
Updated

Places in this warning

How much

Snow across the area
Another up to 6 inches
Wind gusts
Up to 55 mph

Map

Map of Idaho with this warning The Winter Storm Warning covers Ketchum, Sun Valley, Stanley. I-15I-84KetchumStanleyClaytonIDAHOMONTANA20 mi I-15I-84KetchumStanleyIDAHOMONTANA25 mi KetchumStanleyIDAHOMONTANA50 mi KetchumStanleyIDAHOMONTANA50 mi
  • This warning
  • Interstates
  • US highways
Alert area: National Weather Service. Borders and highways: U.S. Census Bureau. Lakes, rivers and other countries: Natural Earth. Open this area in OpenStreetMap

Details from the National Weather Service

What
Heavy snow. Additional snow accumulations up to 6 inches. Winds gusting as high as 55 mph.
Where
Big Lost Highlands/Copper Basin, Frank Church Wilderness, Sawtooth/Stanley Basin, and Sun Valley Region.
When
Until 5 in the morning Saturday.
Impacts
Plan on slippery road conditions. The hazardous conditions could impact the Friday evening commute. Strong winds could cause tree damage.

Updates

  1. Cancelled by the National Weather Service. December 19, 2025
  2. Snow totals lowered from 6 to 12 inches to up to 6 inches. December 19, 2025
  3. Reissued with no change to the times or amounts. December 19, 2025
  4. Reissued with no change to the times or amounts. December 18, 2025
  5. Reissued with no change to the times or amounts. December 17, 2025
  6. Replaces the Winter Storm Watch. December 17, 2025