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.

35°F

2°C

Humidity	95%
Wind Speed	SW 8 MPH
Barometer	NA
Dewpoint	34°F (1°C)
Visibility	NA
Wind Chill	28°F (-2°C)
Last update	25 Dec 05:09 PM PST

More Information:

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

Extended Forecast for

5 Miles SSE Donner Summit CA

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

Click here for hazard details and duration

Winter Storm Warning

Winter Storm Warning December 25, 06:06pm until December 26, 10:00pm
NOW until 10:00pm Fri
Winter Storm Warning
Tonight
Low: 26 °F
Heavy Snow
and Breezy
Friday
High: 35 °F
Heavy Snow
Friday Night
Low: 22 °F
Snow
Saturday
High: 38 °F
Chance Snow
Saturday Night
Low: 18 °F
Partly Cloudy
Sunday
High: 40 °F
Mostly Sunny
Sunday Night
Low: 19 °F
Mostly Clear
Monday
High: 44 °F
Sunny

Detailed Forecast

Tonight

Snow. The snow could be heavy at times. Low around 26. Breezy, with a south southwest wind 18 to 23 mph, with gusts as high as 60 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 11 to 17 inches possible.

Friday

Snow. The snow could be heavy at times. High near 35. Southwest wind 10 to 16 mph, with gusts as high as 45 mph. Chance of precipitation is 80%. New snow accumulation of 3 to 5 inches possible.

Friday Night

Snow, mainly before 4am. Low around 22. Southwest wind 9 to 11 mph, with gusts as high as 36 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

Saturday

A 40 percent chance of snow, mainly before 10am. Mostly cloudy, then gradually becoming sunny, with a high near 38. Calm wind. New snow accumulation of less than a half inch possible.

Saturday Night

Partly cloudy, with a low around 18. East wind 5 to 7 mph, with gusts as high as 20 mph.

Sunday

Mostly sunny, with a high near 40.

Sunday Night

Mostly clear, with a low around 19.

Monday

Sunny, with a high near 44.

Monday Night

Mostly clear, with a low around 25.

Tuesday

Sunny, with a high near 49.