BOISE, Idaho — A large storm system will set up winter conditions across the Northwest with heavy snow developing for the mountains of Idaho and lasting through early next week.  Most mountain communities will see 12-24" of snow through Tuesday, with 2-4 feet or more at higher elevations, with poor travel conditions due to the heavy snow and winds causing blowing and drifting at times.

For the Treasure Valley and other lower elevations areas, periods of snow today and tonight, 1-2" likely in most valley areas today and again tonight.  Highs only in the mid to upper 30's.  Snow Sunday morning will gradually mix with and change to rain as milder air moves in, but the rain/snow mix will continue through Tuesday.  Highs do warm a bit, to the low to mid 40's, but it will be windy at times Sunday and Monday.

The rest of the week will be milder with near normal temperatures in the mid to upper 40's, with occasional rain each day, while snow continues in the mountains through the end of the week.

WINTER STORM WARNINGS are in effect for mountain areas above 4000 ' through Tuesday afternoon.

7 day forecast

Road reports from Idaho Transportation Department and Oregon Department of Transportation

Severe weather alerts

Weather-related closures

Air quality real-time monitoring map

Neighborhood radars

Ada County Highway District traffic map and live cameras

Idaho's Chief Meteorologist Rick Lantz began his broadcasting career in 1975 working in both radio and television in Weiser, Caldwell, Nampa, and Boise. He has been bringing you the weather each weeknight for over 30 years on KTVB.

Meteorologist Larry Gebert began his broadcasting career in 1977 working for a radio station while he was completing his degree. He began working in television the following year in Montana before moving to Boise in 1983. Larry has been with KTVB since 1992 working as a meteorologist.

Meteorologist Bri Eggers joined the KTVB weather team in the fall of 2018. She became a meteorologist while working here in the Treasure Valley, and has earned her National Weather Association seal of approval. After spending four years in Boston, forecasting blizzards, nor’easters and humid summer days, Bri is excited to dive back into mountain meteorology. 

Meteorologist Jim Duthie has been a part of KTVB's weather team since August of 2008, but it's not his first experience with Idaho weather. Jim began forecasting on television in the Treasure Valley in 1998. Prior to coming to Idaho, he had extensive weather forecasting experience both in the private sector and in broadcasting.