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, 04:00 AM PST until December 27, 07:00 AM PST

Current conditions at

Stampede Pass (KSMP)

Lat: 47.27648°NLon: 121.33817°WElev: 3970.0ft.

unknown precip,freezing fog

31°F

-1°C

Humidity	100%
Wind Speed	N 0 MPH
Barometer	29.57 in (1001.36 mb)
Dewpoint	31°F (-1°C)
Visibility	0.50 mi
Last update	25 Dec 03:05 PM PST

More Information:

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

Extended Forecast for

9 Miles SW Easton WA

Winter Weather Advisory December 26, 04:00am until December 27, 07:00am

Click here for hazard details and duration

Winter Weather Advisory

Christmas Day
High: 30 °F
Snow Likely
Tonight
Low: 22 °F
Chance Snow
Friday
High: 26 °F⇓
Heavy Snow
Friday Night
Low: 18 °F
Heavy Snow
and Breezy
Saturday
High: 20 °F
Slight Chance
Snow then
Partly Sunny
Saturday Night
Low: 15 °F
Mostly Cloudy
Sunday
High: 26 °F
Partly Sunny
Sunday Night
Low: 19 °F
Mostly Cloudy
Monday
High: 29 °F
Mostly Cloudy

Detailed Forecast

Christmas Day

Snow likely, mainly before 4pm. Mostly cloudy, with a high near 30. Southeast wind around 7 mph. Chance of precipitation is 70%. Total daytime snow accumulation of less than one inch possible.

Tonight

A chance of snow before 10pm, then a chance of snow after 1am. Mostly cloudy, with a low around 22. South wind around 7 mph. Chance of precipitation is 30%.

Friday

Snow, mainly after 7am. The snow could be heavy at times. Temperature rising to near 26 by 10am, then falling to around 21 during the remainder of the day. South wind 9 to 15 mph becoming west in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

Friday Night

Snow, mainly before 4am. The snow could be heavy at times. Low around 18. Breezy, with a west wind 25 to 28 mph, with gusts as high as 43 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.

Saturday

A 20 percent chance of snow before 10am. Partly sunny, with a high near 20. West wind 9 to 18 mph, with gusts as high as 30 mph.

Saturday Night

Mostly cloudy, with a low around 15.

Sunday

Partly sunny, with a high near 26.

Sunday Night

Mostly cloudy, with a low around 19.

Monday

Mostly cloudy, with a high near 29.

Monday Night

Mostly cloudy, with a low around 23.