JACKSON, Wyo. – The National Weather Service office in Riverton, Wyo. (NWS) has issued a winter weather advisory for Jackson Hole and a winter storm warning for the Teton and Gros Ventre mountain ranges, effective starting at 5 a.m. Thursday, Dec. 5. 26, until Friday, December 27, 11 p.m.

In the Valley, NWS is calling for total snow accumulations between 5 and 9 inches through Friday night, as well as wind gusts “up to 30 mph, resulting in blowing/blown snow.” In the Teton Mountains, snowfall could be between 20 and 45 centimeters, with “up to 60 centimeters at the peaks,” according to NWS. In the mountains, wind gusts could reach speeds of 40 miles per hour.

In an additional warning covering most of western Wyoming, NWS expects this to be the start of a multi-day snow event, with “several feet of snow” falling in the mountains through Monday.

Vehicle movement is expected to be difficult during this storm sequence. Hazardous driving conditions are expected during commute times on Thursday and Friday. Tips for driving Teton Pass in winter weather can be found here. Please see the Wyoming Department of Transportation’s Teton Pass webcam for conditions and see the travel map for additional details. Drivers can sign up for the agency’s 511 Notify alerts here.

This forecast has changed several times since Christmas morning. This information is current as of Wednesday, 5:15 p.m.; Be sure to check the NWS website for updates.