Winter Weather Advisory:

Issued at: 1:37 PM MST on December 21, 2014, expires at: 5:00 AM MST on December 22, 2014
  • ...Winter Weather Advisory remains in effect until 5 am MST /4 am PST/ Monday above 4000 feet... A Winter Weather Advisory above 4000 feet remains in effect until 5 am MST /4 am PST/ Monday.
  • Impacts/timing:periods of moderate to heavy snow showers will continue the remainder of this afternoon through the overnight hours for area passes. Mountain roads will be very difficult or dangerous to travel on at times especially Lolo and lost trail passes and at Gilmore Summit. Snow levels will decrease to valley bottoms by early Monday allowing for light snow accumulations across some lower elevations.
  • Additional snow accumulations: 2 to 4 inches at Lolo Pass and the Williams Creek Summit with 3 to 6 inches at Lost Trail Pass. Gilmore Summit could see an additional 1 to 2 inches. Precautionary/preparedness actions... A 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.

Avalanche Warning:

Issued at: 1:35 PM MST on December 21, 2014, expires at: 6:00 AM MST on December 22, 2014
  • The west central Montana avalanche center has issued a backcountry avalanche warning for the mountains of west central Montana. For the complete backcountry avalanche warning detailing specific time and location see www.Missoulaavalanche.Org or call 406-549-4488. Recreationalists should use extra caution when venturing into the backcountry until conditions improve. This information has been transmitted by the National Weather Service at the request of the west central Montana avalanche center.

First Alert 48 Hour Forecast

WINTER WEATHER ADVISORY in effect for all mountain passes through early Monday morning for heavy snow and dangerous driving conditions. Continued snowfall through early Monday will add between 1 and 4 inches of new accumulation.
Overnight lows drop into the upper 20s and low 30s.

Rain will gradually turn over to snow in most valleys outside of Sanders and Lincoln counties Monday, but only light accumulations are expected with showers being more scattered than they were over the weekend. Mountain snow will continue to pile up in Southwest Montana through late Monday. Highs top out in the low to mid 30s.

Tuesday will be largely uneventful with light showers around the state. Shower activity in Northwest Montana will spike as we head into Tuesday night.

Another system with much colder air behind it will impact Montana Christmas Eve and Christmas Day. Expect moderate snowfall for all valleys in the region with temperatures only reaching the upper 20s by the time the storm activity wraps up on Friday. Expect a better chance for snow in Kalispell on Christmas Eve and in Bozeman on Christmas Day. Missoula and Butte are pretty much even for snow chances on both days.

Colder air remains in place for the weekend with a slight chance for showers. More cold air could be on the way for early next week. Stay with us.

Matt Gray Watch Meteorologist Matt Gray weekend nights on the NEWS AT 5 and 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.