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, 04:00 PM PST

Current conditions at

CANYON CREEK (CYFW1)

Lat: 45.92944°NLon: 122.20278°WElev: 2592.0ft.

37°F

3°C

Humidity	99%
Wind Speed	NNW 2 MPH
Barometer	NA
Dewpoint	37°F (3°C)
Visibility	NA
Last update	26 Dec 03:52 AM PST

More Information:

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

Extended Forecast for

3 Miles ENE Mount St Helens WA

Winter Weather Advisory until December 27, 04:00pm

Click here for hazard details and duration

Winter Weather Advisory

Winter Weather Advisory until December 27, 04:00pm
NOW until 4:00pm Sat
Winter Weather Advisory
Overnight
Low: 29 °F
Snow Showers
Likely
Friday
High: 32 °F⇓
Heavy Snow
Friday Night
Low: 26 °F
Heavy Snow
and Breezy
Saturday
High: 27 °F
Snow Showers
Likely then
Chance Snow
Showers
Saturday Night
Low: 22 °F
Mostly Cloudy
Sunday
High: 31 °F
Partly Sunny
Sunday Night
Low: 24 °F
Mostly Cloudy
Monday
High: 35 °F
Partly Sunny

Detailed Forecast

Overnight

Snow showers likely, mainly after 5am. Mostly cloudy, with a low around 29. West southwest wind around 6 mph. Chance of precipitation is 60%. Total nighttime snow accumulation of less than a half inch possible.

Friday

Snow showers, mainly before 3pm. The snow could be heavy at times. Temperature rising to near 32 by 11am, then falling to around 26 during the remainder of the day. West wind 6 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.

Friday Night

Snow showers, mainly before 2am. The snow could be heavy at times. Some thunder is also possible. Steady temperature around 26. Breezy, with a west northwest wind around 21 mph, with gusts as high as 33 mph. Chance of precipitation is 90%. New snow accumulation of 5 to 9 inches possible.

Saturday

Snow showers likely, mainly before 10am. Partly sunny, with a high near 27. West northwest wind 6 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

Saturday Night

Mostly cloudy, with a low around 22. Light west northwest wind.

Sunday

Partly sunny, with a high near 31.

Sunday Night

Mostly cloudy, with a low around 24.

Monday

Partly sunny, with a high near 35.

Monday Night

Mostly cloudy, with a low around 27.

Tuesday

Partly sunny, with a high near 38.