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 until December 24, 04:00 PM PST

Current conditions at

NCSB (NCSW1)

Lat: 48.42528°NLon: 120.14194°WElev: 1697.0ft.

30°F

-1°C

Humidity	100%
Wind Speed	W 0 MPH
Barometer	NA
Dewpoint	30°F (-1°C)
Visibility	NA
Last update	24 Dec 07:06 AM PST

More Information:

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

Extended Forecast for

Twisp WA

Winter Weather Advisory December 24, 07:52am until December 24, 04:00pm

Click here for hazard details and duration

Winter Weather Advisory

Winter Weather Advisory December 24, 07:52am until December 24, 04:00pm
NOW until 4:00pm Wed
Winter Weather Advisory
Today
High: 34 °F
Rain/Snow
then Rain
Tonight
Low: 24 °F
Partly Cloudy
then Patchy
Freezing Fog
Christmas Day
High: 33 °F
Rain/Snow
Likely and
Patchy
Freezing Fog
Thursday Night
Low: 25 °F
Rain/Snow
Likely then
Slight Chance
Rain
Friday
High: 33 °F
Chance
Rain/Snow
Friday Night
Low: 16 °F
Slight Chance
Snow then
Partly Cloudy
Saturday
High: 34 °F
Mostly Sunny
Saturday Night
Low: 16 °F
Mostly Cloudy

Detailed Forecast

Today

Snow before 10am, then rain. High near 34. Calm wind becoming north 5 to 7 mph in the morning. Chance of precipitation is 100%. Total daytime snow accumulation of less than one inch possible.

Tonight

Patchy freezing fog after 4am. Partly cloudy, with a low around 24. Calm wind.

Christmas Day

A chance of rain and snow before 11am, then a chance of snow between 11am and noon, then rain and snow likely after noon. Patchy freezing fog before 10am. Mostly cloudy, with a high near 33. Calm wind. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

Thursday Night

Rain and snow likely before 10pm, then a slight chance of rain. Mostly cloudy, with a low around 25. Calm wind. Chance of precipitation is 60%. Little or no snow accumulation expected.

Friday

A chance of rain and snow, mainly after 10am. Partly sunny, with a high near 33. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

Friday Night

A 20 percent chance of snow before 10pm. Partly cloudy, with a low around 16.

Saturday

Mostly sunny, with a high near 34.

Saturday Night

Mostly cloudy, with a low around 16.

Sunday

Partly sunny, with a high near 35.

Sunday Night

Mostly cloudy, with a low around 20.

Monday

Mostly cloudy, with a high near 37.