* WHAT...Heavy snow possible. Total snow accumulations between 6 and 12 inches possible. * WHERE...The Interstate 15 Corridor north of Power, Eastern Toole and Liberty Counties, Western and Central Chouteau County, and Cascade County below 5000ft. * WHEN...From Thursday evening through Saturday afternoon. * IMPACTS...Travel could be very difficult with falling and blowing snow significantly reducing visibility at times.

* WHAT...For the Winter Weather Advisory, snow. Additional snow accumulations up to 4 inches. Winds gusting as high as 55 mph. For the Winter Storm Warning, heavy snow expected. Total snow accumulations between 2 and 4 feet. Winds gusting as high as 80 mph on Thursday. * WHERE...The Continental Divide along the Rocky Mountain Front. * WHEN...For the Winter Weather Advisory, until 6 PM MDT this evening. For the Winter Storm Warning, from 6 PM this evening to 6 PM MDT Saturday. * IMPACTS...Whiteout conditions are possible and may make travel treacherous and potentially life-threatening, especially from 12 AM Thursday through 8 AM Thursday.

* WHAT...Southwest to westerly winds 35 to 55 mph, with gusts up to 80 mph expected. Winds may gust over 95 mph along the Rocky Mountain Front. * WHERE...The Rocky Mountain Front and adjacent foothills and plains, and Eastern Glacier, Western Toole, and Central Pondera Counties. * WHEN...From 6 PM this evening to 3 PM MDT Thursday. * IMPACTS...Damaging winds may blow down trees and power lines. Power outages are possible. Travel could be very difficult to dangerous, especially for high profile or light weight vehicles. Blowing dust or snow could significantly reduce visibility at times.