* WHAT...Snow expected. Likelihood of minor impacts from snow is up to 90 percent. Likelihood of isolated major impacts from brief intense snow squalls is up to 50 percent tonight through Friday morning, and road freeze up with falling temperatures is up 60 percent Friday night into Saturday. Total snow accumulations up to 3 inches. Winds gusting as high as 35 mph.
* WHERE...Bitterroot/Sapphire Mountains, Butte/Blackfoot Region, Lower Clark Fork Region, Missoula/Bitterroot Valleys, and Potomac/Seeley Lake Region.
* WHEN...From 8 PM this evening to 5 PM MST Saturday.
* IMPACTS...For MINOR impacts from snow, expect a few inconveniences to normal activities. Use caution while driving. For MAJOR impacts from intense snow and road freeze up, expect considerable disruptions to normal activities. Dangerous or impossible traveling conditions. The hazardous conditions could impact the Friday morning and evening commutes, especially over higher passes.