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

Emigrant Gap, Blue Canyon Nyack Airport (KBLU)

Lat: 39.27611°NLon: 120.70806°WElev: 5282.0ft.

light snow,mist

34°F

1°C

Humidity	100%
Wind Speed	S 18 MPH
Barometer	29.65 in (1004.06 mb)
Dewpoint	34°F (1°C)
Visibility	1.00 mi
Wind Chill	23°F (-5°C)
Last update	25 Dec 05:11 AM PST

More Information:

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

Extended Forecast for

3 Miles W Donner Summit CA

Winter Storm Warning December 25, 05:24am until December 26, 10:00pm

Click here for hazard details and duration

Winter Storm Warning

Winter Storm Warning December 25, 05:24am until December 26, 10:00pm
NOW until 10:00pm Fri
Winter Storm Warning
Overnight
Low: 28 °F
Heavy Snow
Christmas Day
High: 35 °F
Heavy Snow
Thursday Night
Low: 23 °F
Heavy Snow
Friday
High: 33 °F
Heavy Snow
Friday Night
Low: 20 °F
Snow
Saturday
High: 36 °F
Chance Snow
Saturday Night
Low: 16 °F
Partly Cloudy
Sunday
High: 38 °F
Sunny

Detailed Forecast

Overnight

Snow. The snow could be heavy at times. Low around 28. South wind around 18 mph, with gusts as high as 50 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 4 to 8 inches possible.

Christmas Day

Snow. The snow could be heavy at times. High near 35. South southwest wind 14 to 17 mph, with gusts as high as 50 mph. Chance of precipitation is 100%. New snow accumulation of 11 to 17 inches possible.

Thursday Night

Snow. The snow could be heavy at times. Low around 23. South southwest wind around 18 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 33. South southwest wind 10 to 13 mph, with gusts as high as 38 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.

Friday Night

Snow. Low around 20. Southwest wind 3 to 7 mph. Winds could gust as high as 21 mph. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.

Saturday

A 40 percent chance of snow. Partly sunny, with a high near 36. New snow accumulation of less than a half inch possible.

Saturday Night

Partly cloudy, with a low around 16.

Sunday

Sunny, with a high near 38.

Sunday Night

Mostly clear, with a low around 18.

Monday

Sunny, with a high near 44.

Monday Night

Mostly clear, with a low around 24.