Lewis and Clark

Winter Weather Advisory:

Issued at: 3:22 am MST on December 20, 2014, expires at: 5:00 AM MST on December 22, 2014
  • ...Winter Weather Advisory remains in effect from 5 PM this afternoon to 5 am MST Monday for elevations above 5000 feet... A Winter Weather Advisory for elevations above 5000 feet for snow and blowing snow remains in effect from 5 PM this afternoon to 5 am MST Monday.
  • Timing and main impact: snow will develop over the Rocky Mountains tonight night and continue through early Monday. The axis of heaviest snowfall will gradually shift from north to south.
  • Snow accumulations: 3 to 6 inches of snow are expected over mountain passes with 10 to 20 inches possible above pass level. Snow accumulation may be reduced further south as snow levels rise on Sunday afternoon.
  • Winds and visibility: wind gusts up to 60 mph will peak early Sunday through favored areas along the Rocky Mountain front. Visibility could drop below 1/2 mile at times in blowing snow.
  • Elevations: for elevations above 5000 feet.
  • Locations affected include: Marias Pass...Boulder Hill...Elk Park Pass...Homestake pass...Flesher Pass... MacDonald Pass...Rogers Pass
  • to see a graphical representation of this hazard please visit our web Page and click on the detailed hazards tab. Precautionary/preparedness actions... A Winter Weather Advisory for snow and blowing snow means that visibilities will be limited due to a combination of falling and blowing snow. Use caution when traveling...especially in open areas. For specific Road and travel conditions in Montana...dial 5 1 1.

First Alert 48 Hour Forecast

Saturday starts off with dry skies, but by the afternoon wet weather returns to northwest Montana.  Southwest Montana stays dry all day with partial sunshine.  High temperatures end up a touch above average in the mid 30s.
By Saturday night, the entire region runs into the shower activity.  This is a relatively warm system, so the valleys are mainly staring at rain.  Mountain passes will get pummeled by snow.  Travel over our mountain passes will be tough on Sunday.

Monday and Tuesday appear to be relatively quiet days with just some isolated shower activity.

The potential still stands for a more potent snow storm sometime between Christmas Eve and Christmas Day.  This one will bring enough cold air with it for all valleys to have a good chance at shoveling some snow.  Nice little Christmas present from Old Man Winter...

adam painter Watch Meteorologist Adam Painter weekends on the NEWS AT 10. More Details


First Alert Meteorologists

mark heyka

Mark Heyka

Mark Heyka received a B.A. in broadcast journalism from Washburn University in Topeka, Kansas.

brooke foster

Brooke Foster

Brooke Foster joined the NBC Montana team in March of 2006.

Matt Gray

Matt Gray

Matt joined the NBC Montana weather team in July 2013 after graduating with a Bachelor of Science in meteorology.