Atmospheric River Bringing Heavy Rain to Southern California and Heavy Snow to the Sierra Nevadas

A strong atmospheric river will continue heavy rain over southern California through Friday. The heaviest rainfall is ongoing today in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall has begun over the Sierra Nevada Mountains and will continue through Friday. Travel will become increasingly difficult over the passes due to snow and strong winds. Read More >

Hazardous Weather Conditions

Winter Weather Advisory in effect from December 26, 12:00 PM MST until December 27, 05:00 PM MST

Current conditions at

BOORMAN (BOOM8)

Lat: 48.14389°NLon: 114.71806°WElev: 3963.0ft.

35°F

2°C

Humidity	96%
Wind Speed	S 1 MPH
Barometer	NA
Dewpoint	34°F (1°C)
Visibility	NA
Last update	25 Dec 11:15 PM MST

More Information:

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

Extended Forecast for

7 Miles E Happys Inn MT

Winter Weather Advisory December 26, 12:00pm until December 27, 05:00pm

Click here for hazard details and duration

Winter Weather Advisory

Tonight
Low: 27 °F
Slight Chance
Snow
Friday
High: 28 °F
Heavy Snow
and Patchy
Blowing Snow
Friday Night
Low: 15 °F
Snow and
Blowing Snow
Saturday
High: 17 °F
Chance Snow
and Blowing
Snow
Saturday Night
Low: 5 °F
Partly Cloudy
Sunday
High: 14 °F
Mostly Sunny
Sunday Night
Low: 11 °F
Mostly Cloudy
Monday
High: 20 °F
Mostly Cloudy
Monday Night
Low: 16 °F
Mostly Cloudy

Detailed Forecast

Tonight

A 20 percent chance of snow between 4am and 5am. Mostly cloudy, with a low around 27. Southwest wind 13 to 16 mph, with gusts as high as 22 mph.

Friday

Snow, mainly before 4pm. The snow could be heavy at times. Patchy blowing snow after 8am. High near 28. Breezy, with a south southwest wind 10 to 15 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 36 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 7 inches possible.

Friday Night

Snow. Widespread blowing snow, mainly after 8pm. Low around 15. Wind chill values as low as -5. Windy, with a southwest wind 29 to 34 mph increasing to 36 to 41 mph in the evening. Winds could gust as high as 50 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

Saturday

A 40 percent chance of snow before 11am. Widespread blowing snow, mainly before 8am. Partly sunny, with a high near 17. Wind chill values as low as -6. Windy, with a west northwest wind 28 to 38 mph decreasing to 14 to 24 mph in the afternoon. Winds could gust as high as 55 mph. New snow accumulation of less than a half inch possible.

Saturday Night

Partly cloudy, with a low around 5. West northwest wind 8 to 11 mph.

Sunday

Mostly sunny, with a high near 14.

Sunday Night

Mostly cloudy, with a low around 11.

Monday

Mostly cloudy, with a high near 20.

Monday Night

Mostly cloudy, with a low around 16.

Tuesday

Mostly cloudy, with a high near 23.