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 26, 10:00 PM PST

Current conditions at

STEHEKIN-AIRSTRIP (STRW1)

Lat: 48.34694°NLon: 120.72028°WElev: 1230.0ft.

33°F

1°C

Humidity	98%
Wind Speed	WSW 0 MPH
Barometer	NA
Dewpoint	32°F (0°C)
Visibility	NA
Last update	25 Dec 01:01 PM PST

More Information:

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

Extended Forecast for

4 Miles WNW Trinity WA

Winter Weather Advisory December 26, 04:00am until December 26, 10:00pm

Click here for hazard details and duration

Winter Weather Advisory

Christmas Day
High: 24 °F
Heavy Snow
Tonight
Low: 17 °F
Heavy Snow
then Chance
Snow
Friday
High: 21 °F⇓
Heavy Snow
and Breezy
Friday Night
Low: 10 °F
Breezy. Heavy
Snow then
Snow Likely
Saturday
High: 14 °F
Chance Snow
and Blustery
then Mostly
Sunny
Saturday Night
Low: 7 °F
Mostly Cloudy
Sunday
High: 20 °F
Mostly Sunny
Sunday Night
Low: 14 °F
Mostly Cloudy
Monday
High: 25 °F
Mostly Cloudy

Detailed Forecast

Christmas Day

Snow. The snow could be heavy at times. High near 24. South wind around 9 mph. Chance of precipitation is 90%. Total daytime snow accumulation of 3 to 5 inches possible.

Tonight

Snow likely, mainly before 7pm. The snow could be heavy at times. Mostly cloudy, with a low around 17. Southwest wind around 9 mph. Chance of precipitation is 60%. New snow accumulation of 2 to 4 inches possible.

Friday

Snow, mainly after 7am. The snow could be heavy at times. Temperature rising to near 21 by 11am, then falling to around 16 during the remainder of the day. Wind chill values as low as -1. Breezy, with a south wind 13 to 21 mph becoming west in the afternoon. Chance of precipitation is 100%. New snow accumulation of 4 to 8 inches possible.

Friday Night

Snow, mainly before 4am. The snow could be heavy at times. Low around 10. Wind chill values as low as -10. Breezy, with a west wind 22 to 24 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 7 inches possible.

Saturday

A 30 percent chance of snow before 10am. Partly sunny, with a high near 14. Blustery, with a northwest wind 14 to 18 mph. New snow accumulation of less than a half inch possible.

Saturday Night

Mostly cloudy, with a low around 7.

Sunday

Mostly sunny, with a high near 20.

Sunday Night

Mostly cloudy, with a low around 14.

Monday

Mostly cloudy, with a high near 25.

Monday Night

Mostly cloudy, with a low around 18.

Tuesday

A 10 percent chance of snow. Partly sunny, with a high near 29.