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 Storm Warning until December 26, 10:00 PM PST

Current conditions at

HELL HOLE (HLLC1)

Lat: 39.06971°NLon: 120.41989°WElev: 5240.0ft.

34°F

1°C

Humidity	95%
Wind Speed	S 8 MPH
Barometer	NA
Dewpoint	33°F (1°C)
Visibility	NA
Wind Chill	27°F (-3°C)
Last update	25 Dec 05:09 AM PST

More Information:

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

Extended Forecast for

2 Miles ENE Donner Summit CA

Winter Storm Warning December 25, 06:02am until December 26, 10:00pm

Click here for hazard details and duration

Winter Storm Warning

Winter Storm Warning December 25, 06:02am until December 26, 10:00pm
NOW until 10:00pm Fri
Winter Storm Warning
Christmas Day
High: 30 °F
Heavy Snow
and Breezy
Tonight
Low: 23 °F
Heavy Snow
and Breezy
Friday
High: 28 °F
Heavy Snow
Friday Night
Low: 19 °F
Snow
Saturday
High: 31 °F
Chance Snow
Saturday Night
Low: 14 °F
Partly Cloudy
Sunday
High: 32 °F
Mostly Sunny
Sunday Night
Low: 17 °F
Mostly Clear

Detailed Forecast

Christmas Day

Snow. The snow could be heavy at times. High near 30. Breezy, with a south southwest wind 18 to 25 mph, with gusts as high as 55 mph. Chance of precipitation is 100%. Total daytime snow accumulation of 14 to 20 inches possible.

Tonight

Snow. The snow could be heavy at times. Low around 23. Breezy, with a south southwest wind around 24 mph, with gusts as high as 55 mph. Chance of precipitation is 100%. New snow accumulation of 13 to 19 inches possible.

Friday

Snow. The snow could be heavy at times. High near 28. South southwest wind 15 to 21 mph, with gusts as high as 40 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 7 inches possible.

Friday Night

Snow. Low around 19. Southwest wind 7 to 10 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

Saturday

A 40 percent chance of snow. Partly sunny, with a high near 31. Light and variable wind becoming north northwest around 5 mph in the afternoon. New snow accumulation of less than a half inch possible.

Saturday Night

Partly cloudy, with a low around 14.

Sunday

Mostly sunny, with a high near 32.

Sunday Night

Mostly clear, with a low around 17.

Monday

Sunny, with a high near 38.

Monday Night

Mostly clear, with a low around 22.

Tuesday

Sunny, with a high near 43.