Montana–Idaho – Widespread winter weather advisories remain in effect across western Montana and parts of central Idaho Friday, as mixed precipitation combines with cold road surfaces to create hazardous travel conditions.
According to the National Weather Service in Missoula, Winter Weather Advisories continue through late morning or early afternoon Friday for multiple regions, including the Flathead and Mission Valleys, Missoula and Bitterroot Valleys, Potomac and Seeley Lake region, Bitterroot and Sapphire Mountains, Lower Clark Fork Region, Kootenai/Cabinet Region, West Glacier Region, and the Butte/Blackfoot area. Advisories are also in effect for western and eastern Lemhi County and the Southern Clearwater Mountains in Idaho.
Forecasters expect light snow accumulations generally up to 1 to 3 inches, with localized totals of 3 to 5 inches at higher passes such as Lost Trail Pass, Lookout Pass, Marias Pass, and Lolo Pass. Ice accumulations of a light glaze to around one-tenth of an inch are possible in several valleys and mountain corridors.
The National Weather Service emphasizes that cold road temperatures increase the risk of slick conditions, even where precipitation amounts remain minor. Rain or wet snow falling on frozen surfaces may quickly lead to icy roads, especially where traffic compacts moisture.
Officials warn that hazardous conditions could impact the Friday morning commute, particularly over higher passes and mountain highways including I-90 east of Missoula, Highway 200, Highway 93, Highway 12, Highway 83, and Highway 37.
Drivers are urged to slow down, allow extra stopping distance, and remain alert for rapidly changing road conditions. Travelers should check the latest road information by calling 511 before heading out.
For commuters, freight drivers, and school transportation across the northern Rockies, the advisories signal continued travel risks until temperatures rise and precipitation tapers later today.
