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, 05:00 AM MST until December 27, 08:00 PM MST

Current conditions at

Ravalli County Airport (KHRF)

Lat: 46.25463°NLon: 114.1246°WElev: 3644.0ft.

Fog

34°F

1°C

Humidity	100%
Wind Speed	N 0 MPH
Barometer	29.66 in (1004.4 mb)
Dewpoint	34°F (1°C)
Visibility	0.25 mi
Last update	26 Dec 04:35 AM MST

More Information:

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

Extended Forecast for

13 Miles ENE Darby MT

Winter Weather Advisory until December 27, 08:00pm

Click here for hazard details and duration

Winter Weather Advisory

Winter Weather Advisory until December 27, 08:00pm
NOW until 8:00pm Sat
Winter Weather Advisory
Overnight
Low: 26 °F
Chance Snow
Friday
High: 29 °F
Snow Likely
then Chance
Snow and
Patchy
Blowing Snow
Friday Night
Low: 13 °F
Heavy Snow
and Patchy
Blowing Snow
Saturday
High: 15 °F
Snow then
Snow Likely
Saturday Night
Low: 2 °F
Partly Cloudy
Sunday
High: 14 °F
Mostly Sunny
Sunday Night
Low: 8 °F
Mostly Clear
Monday
High: 23 °F
Mostly Sunny

Detailed Forecast

Overnight

A 50 percent chance of snow. Mostly cloudy, with a low around 26. South wind around 10 mph, with gusts as high as 24 mph. Total nighttime snow accumulation of less than a half inch possible.

Friday

Snow likely, mainly before 4pm. Patchy blowing snow between noon and 4pm. Partly sunny, with a high near 29. Breezy, with a south wind 10 to 15 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 45 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

Friday Night

Snow, mainly between 11pm and 2am. The snow could be heavy at times. Patchy blowing snow between 8pm and 3am. Low around 13. Wind chill values as low as zero. West southwest wind 17 to 20 mph, with gusts as high as 47 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

Saturday

Snow. High near 15. Wind chill values as low as -7. West wind 11 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 2 inches possible.

Saturday Night

Partly cloudy, with a low around 2. West wind 5 to 8 mph becoming light and variable after midnight.

Sunday

Mostly sunny, with a high near 14.

Sunday Night

Mostly clear, with a low around 8.

Monday

Mostly sunny, with a high near 23.

Monday Night

Mostly cloudy, with a low around 18.

Tuesday

Mostly cloudy, with a high near 29.