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.

light snow,freezing fog

31°F

-1°C

Humidity	100%
Wind Speed	N 0 MPH
Barometer	29.53 in (1000.0 mb)
Dewpoint	31°F (-1°C)
Visibility	0.25 mi
Last update	25 Dec 01:42 PM PST

More Information:

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

Extended Forecast for

15 Miles N Roslyn 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: 36 °F
Rain/Snow
Tonight
Low: 26 °F
Chance
Rain/Snow
then Slight
Chance Snow
Friday
High: 34 °F
Heavy Snow
Friday Night
Low: 20 °F
Heavy Snow
then Snow
Likely
Saturday
High: 28 °F
Slight Chance
Snow then
Mostly Sunny
Saturday Night
Low: 16 °F
Mostly Cloudy
Sunday
High: 32 °F
Partly Sunny
Sunday Night
Low: 21 °F
Mostly Cloudy
Monday
High: 36 °F
Mostly Cloudy

Detailed Forecast

Christmas Day

Snow, possibly mixed with rain, mainly before 4pm. High near 36. South wind around 6 mph. Chance of precipitation is 80%. Total daytime snow accumulation of less than a half inch possible.

Tonight

A chance of rain and snow before 1am, then a slight chance of snow between 1am and 4am. Mostly cloudy, with a low around 26. Light southeast wind. Chance of precipitation is 30%.

Friday

Snow, mainly after 10am. The snow could be heavy at times. High near 34. Southeast wind 5 to 9 mph becoming west in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.

Friday Night

Snow, mainly before 4am. The snow could be heavy at times. Low around 20. West wind 11 to 14 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 7 inches possible.

Saturday

A 20 percent chance of snow before 10am. Partly sunny, with a high near 28. West wind around 8 mph.

Saturday Night

Mostly cloudy, with a low around 16.

Sunday

Partly sunny, with a high near 32.

Sunday Night

Mostly cloudy, with a low around 21.

Monday

Mostly cloudy, with a high near 36.

Monday Night

Mostly cloudy, with a low around 25.