Posted: Oct 2, 2013 3:43 PM by Meteorologist Mike Heard
Updated: Oct 2, 2013 3:56 PM
Winter Weather Advisory is in effect from midnight tonight to 6am Friday for SW Montana east of the divide.
Snow will increase late tonight and continue through Thursday before diminishing Thursday evening. Snow levels between 6,000'-8,000' this evening will drop to the lower valleys by early Thursday morning. Poor visibilities associated with the snow will affect travel as well as slushy and icy roads.
Snow accumulations up to 3" for elevations between 4,000' to 5,000', 3"-6" of snow between 5,000'-7,000' and 6"-12" of snow above 7,000'. North facing slopes could see 12" or more of snow.
A rain/snow mix is possible at times at elevations between 4,000'-5,000'.
N-NE winds 15-25 and higher gusts could cause local blowing snow and reduce visibilities to one-half mile at times.
Locations affected: White Sulphur Springs, Battle Ridge pass, Bozeman, Bozeman pass, Targhee pass, West Yellowstone, Boulder, Boulder Hill, Elk Park pass, Homestake pass, Big Hole pass, Chief Joseph pass, Dillon, Monida pass, Ennis, Norris Hill and Raynolds pass.
Winter Weather Advisory is in effect from midnight tonight to midnight Thursday night for the Butte/Blackfoot region.
Snow will begin to develop after midnight tonight and intensify by early morning and throughout the day on Thursday. Heavy wet snow could lead to sporadic power outages.
Snow accumulations of 3"-6" is possible with 6"-10" over the mountain passes.
Locations impacted include: Highway 93 & Lost Trail pass, Skalkaho pass, Butte, Georgetown Lake, Highway 12 Garrison to Elliston and MacDonald pass.
Winter weather advisory for snow means that periods of snow will cause primarily travel difficulties. Be prepared for snow covered roads and limited visibilities and use caution while driving.
Winter Storm Warning in effect from 6am Thursday through noon Friday for Southcentral and Southeastern Montana including I-90 from Livingston eastward into Wyoming.
4"-8" of snow is likely with localized accumulations in the 6"-10" range.
NE Winds 15 to 25 mph will create difficult travel conditions, possible downed power lines and tree damage.
Winter Storm Warning means a significant amount of snow is expected. Strong winds are possible. This will make travel very hazardous or impossible.