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

Current conditions at

HELL HOLE (HLLC1)

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

39°F

4°C

Humidity	93%
Wind Speed	SW 14 MPH
Barometer	NA
Dewpoint	37°F (3°C)
Visibility	NA
Wind Chill	31°F (-1°C)
Last update	24 Dec 08:09 AM PST

More Information:

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

Extended Forecast for

3 Miles E Donner Summit CA

Flood Watch December 24, 09:14am until December 26, 04:00pm

Winter Storm Warning until December 26, 10:00pm

Click here for hazard details and duration

Flood Watch

Winter Storm Warning

Flood Watch December 24, 09:14am until December 26, 04:00pm
Winter Storm Warning until December 26, 10:00pm
NOW: Multiple hazards in effect
Click HERE for Details
Today
High: 38 °F
Rain/Snow
then Heavy
Snow
Tonight
Low: 27 °F
Heavy Snow
and Breezy
Christmas Day
High: 33 °F
Heavy Snow
and Breezy
Thursday Night
Low: 23 °F
Heavy Snow
and Breezy
Friday
High: 30 °F
Heavy Snow
and Breezy
Friday Night
Low: 16 °F
Snow Likely
Saturday
High: 32 °F
Chance Snow
Saturday Night
Low: 15 °F
Partly Cloudy

Detailed Forecast

Today

Rain and snow, becoming all snow after 10am. The rain and snow could be heavy at times. High near 38. South southwest wind 11 to 21 mph, with gusts as high as 46 mph. Chance of precipitation is 100%. Total daytime snow accumulation of 3 to 5 inches possible.

Tonight

Snow. The snow could be heavy at times. Low around 27. Breezy, with a south wind 17 to 25 mph, with gusts as high as 50 mph. Chance of precipitation is 100%. New snow accumulation of 7 to 11 inches possible.

Christmas Day

Snow. The snow could be heavy at times. High near 33. Breezy, with a south southwest wind 18 to 26 mph, with gusts as high as 55 mph. Chance of precipitation is 100%. New snow accumulation of 13 to 19 inches possible.

Thursday Night

Snow. The snow could be heavy at times. Low around 23. Breezy, with a south southwest wind 24 to 26 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 30. Breezy, with a south southwest wind 15 to 22 mph, with gusts as high as 40 mph. Chance of precipitation is 100%. New snow accumulation of 4 to 8 inches possible.

Friday Night

Snow likely, mainly before 10pm. Mostly cloudy, with a low around 16. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.

Saturday

A 30 percent chance of snow, mainly before 10am. Mostly sunny, with a high near 32. New snow accumulation of less than a half inch possible.

Saturday Night

Partly cloudy, with a low around 15.

Sunday

Mostly sunny, with a high near 35.

Sunday Night

Mostly clear, with a low around 17.

Monday

Sunny, with a high near 39.

Monday Night

Mostly clear, with a low around 19.