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

Special Weather Statement

Current conditions at

Stampede Pass (KSMP)

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

unknown precip,fog

32°F

0°C

Humidity	100%
Wind Speed	N 0 MPH
Barometer	29.47 in (997.97 mb)
Dewpoint	32°F (0°C)
Visibility	0.25 mi
Last update	24 Dec 01:56 PM PST

More Information:

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

Extended Forecast for

2 Miles SSE Snoqualmie Pass WA

This Afternoon
High: 41 °F
Rain/Snow
Likely
Tonight
Low: 28 °F
Slight Chance
Rain/Snow
then Mostly
Cloudy
Christmas Day
High: 38 °F
Rain/Snow
Thursday Night
Low: 29 °F
Rain/Snow and
Patchy Fog
Friday
High: 36 °F
Heavy Snow
and Patchy
Fog
Friday Night
Low: 25 °F
Heavy Snow
then Snow
Likely
Saturday
High: 31 °F
Slight Chance
Snow then
Partly Sunny
Saturday Night
Low: 22 °F
Mostly Cloudy
then Patchy
Fog
Sunday
High: 36 °F
Patchy Fog
then Partly
Sunny

Detailed Forecast

This Afternoon

Rain likely before 4pm, then a slight chance of rain and snow. Mostly cloudy, with a high near 41. South wind around 14 mph, with gusts as high as 31 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

Tonight

A slight chance of rain and snow before 7pm. Mostly cloudy, with a low around 28. Northwest wind 5 to 8 mph becoming east in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 10%.

Christmas Day

Rain and snow, mainly after 10am. High near 38. Southeast wind 5 to 7 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

Thursday Night

Rain and snow, mainly before 1am. Patchy fog. Low around 29. Calm wind. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

Friday

Snow. The snow could be heavy at times. Patchy fog before 10am. High near 36. Calm wind becoming west 5 to 8 mph in the morning. Winds could gust as high as 21 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 25. Chance of precipitation is 90%. New snow accumulation of 3 to 7 inches possible.

Saturday

A 20 percent chance of snow before 10am. Mostly cloudy, with a high near 31.

Saturday Night

Patchy fog between 1am and 4am. Otherwise, mostly cloudy, with a low around 22.

Sunday

Patchy fog between 7am and 10am. Otherwise, partly sunny, with a high near 36.

Sunday Night

Mostly cloudy, with a low around 26.

Monday

Partly sunny, with a high near 39.

Monday Night

Mostly cloudy, with a low around 29.