Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds from the Upper Midwest into the Northeast

A prolonged atmospheric river will continue to impact the Pacific Northwest into the Northern Rockies with heavy rainfall, areas of urban and river flooding, landslides, heavy mountain snow, and gusty winds into Thursday. A strong clipper system will bring the threat of heavy snow and high winds across the Upper Midwest/Great Lakes as well as portions of the interior Northeast and Appalachians. Read More >

Hazardous Weather Conditions

Flood Watch in effect from December 8, 05:00 PM MST until December 11, 05:00 PM MST

Current conditions at

Lolo Pass (ITD28)

Lat: 46.63592°NLon: 114.58037°WElev: 5262.0ft.

31°F

-1°C

Humidity	99%
Wind Speed	NE 3 MPH
Barometer	NA
Dewpoint	30°F (-1°C)
Visibility	0.72 mi
Last update	09 Dec 09:15 PM MST

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

24 Miles WSW Alberton MT

Flood Watch until December 11, 05:00pm

Click here for hazard details and duration

Flood Watch

Flood Watch until December 11, 05:00pm
NOW until 5:00pm Thu
Flood Watch
Tonight
Low: 27 °F⇑
Heavy Snow
Wednesday
High: 37 °F
Windy.
Rain/Snow
then Rain
Wednesday Night
Low: 33 °F
Rain and
Windy
Thursday
High: 36 °F
Rain/Snow and
Breezy
Thursday Night
Low: 33 °F
Snow and
Breezy
Friday
High: 35 °F
Snow then
Rain/Snow
Likely
Friday Night
Low: 30 °F
Chance Snow
and Breezy
Saturday
High: 32 °F
Chance Snow

Detailed Forecast

Tonight

Snow, mainly between 10pm and 5am. The snow could be heavy at times. Temperature rising to around 34 by 5am. Southwest wind 10 to 18 mph, with gusts as high as 40 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 3 to 7 inches possible.

Wednesday

Rain, possibly mixed with snow, becoming all rain after 8am. Snow level 7400 feet rising to 8400 feet in the afternoon. High near 37. Windy, with a west southwest wind 25 to 31 mph, with gusts as high as 55 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

Wednesday Night

Rain. Low around 33. Windy, with a southwest wind around 31 mph, with gusts as high as 55 mph. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.

Thursday

Rain and snow, becoming all snow after 2pm. Snow level 8100 feet lowering to 6800 feet in the afternoon . High near 36. Breezy, with a west southwest wind around 29 mph, with gusts as high as 55 mph. Chance of precipitation is 100%. New snow accumulation of around an inch possible.

Thursday Night

Snow. Low around 33. Breezy, with a west wind 15 to 22 mph, with gusts as high as 39 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

Friday

Snow before 2pm, then rain and snow likely. High near 35. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

Friday Night

A 50 percent chance of snow. Mostly cloudy, with a low around 30. Breezy. New snow accumulation of around an inch possible.

Saturday

A chance of snow. Mostly cloudy, with a high near 32.

Saturday Night

A slight chance of snow after 11pm. Mostly cloudy, with a low around 27.

Sunday

A chance of snow. Partly sunny, with a high near 32.

Sunday Night

A chance of snow. Mostly cloudy, with a low around 28.