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.

Mist

29°F

-2°C

Humidity	96%
Wind Speed	N 0 MPH
Barometer	29.58 in (1001.69 mb)
Dewpoint	28°F (-2°C)
Visibility	10.00 mi
Last update	26 Dec 01:56 AM PST

More Information:

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

Extended Forecast for

6 Miles NE Snoqualmie Pass WA

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

Click here for hazard details and duration

Winter Weather Advisory

Overnight
Low: 20 °F
Mostly Cloudy
Friday
High: 24 °F
Heavy Snow
Friday Night
Low: 12 °F
Heavy Snow
and Breezy
Saturday
High: 16 °F
Chance Snow
then Partly
Sunny
Saturday Night
Low: 11 °F
Mostly Cloudy
Sunday
High: 22 °F
Partly Sunny
Sunday Night
Low: 17 °F
Mostly Cloudy
Monday
High: 27 °F
Mostly Cloudy
Monday Night
Low: 21 °F
Mostly Cloudy

Detailed Forecast

Overnight

Mostly cloudy, with a low around 20. Southwest wind around 10 mph.

Friday

Snow, mainly after 7am. The snow could be heavy at times. High near 24. West wind 13 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New snow accumulation of 7 to 11 inches possible.

Friday Night

Snow, mainly before 4am. The snow could be heavy at times. Low around 12. Wind chill values as low as -4. Breezy, with a west wind 26 to 29 mph, with gusts as high as 40 mph. Chance of precipitation is 100%. New snow accumulation of 8 to 12 inches possible.

Saturday

A 40 percent chance of snow before 10am. Partly sunny, with a high near 16. Wind chill values as low as -6. Northwest wind 13 to 20 mph, with gusts as high as 25 mph.

Saturday Night

Mostly cloudy, with a low around 11. Northwest wind around 7 mph.

Sunday

Partly sunny, with a high near 22.

Sunday Night

Mostly cloudy, with a low around 17.

Monday

Mostly cloudy, with a high near 27.

Monday Night

Mostly cloudy, with a low around 21.

Tuesday

Partly sunny, with a high near 30.