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	NNW 1 MPH
Barometer	NA
Dewpoint	30°F (-1°C)
Visibility	NA
Last update	24 Dec 05:06 AM PST

More Information:

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

Extended Forecast for

5 Miles ESE Winthrop WA

Winter Weather Advisory December 24, 05:22am until December 24, 04:00pm

Click here for hazard details and duration

Winter Weather Advisory

Winter Weather Advisory December 24, 05:22am until December 24, 04:00pm
NOW until 4:00pm Wed
Winter Weather Advisory
Overnight
Low: 26 °F
Snow
Wednesday
High: 29 °F
Snow then
Rain/Snow
Wednesday Night
Low: 22 °F
Chance Rain
then Partly
Cloudy
Christmas Day
High: 29 °F
Snow Likely
Thursday Night
Low: 24 °F
Snow Likely
then Slight
Chance Snow
Friday
High: 28 °F
Chance Snow
Friday Night
Low: 14 °F
Slight Chance
Snow then
Partly Cloudy
Saturday
High: 28 °F
Mostly Sunny

Detailed Forecast

Overnight

Snow. Steady temperature around 26. Light northeast wind. Chance of precipitation is 100%. Total nighttime snow accumulation of 1 to 3 inches possible.

Wednesday

Snow before noon, then rain, possibly mixed with snow between noon and 1pm, then a chance of rain after 1pm. High near 29. East wind 6 to 9 mph becoming southwest in the afternoon. Chance of precipitation is 100%. New snow accumulation of 1 to 2 inches possible.

Wednesday Night

A 30 percent chance of rain before 7pm. Partly cloudy, with a low around 22. Northeast wind around 5 mph becoming calm in the evening. New precipitation amounts of less than a tenth of an inch possible.

Christmas Day

Snow likely after 10am. Mostly cloudy, with a high near 29. Light north wind. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

Thursday Night

Snow likely, mainly before 10pm. Mostly cloudy, with a low around 24. Calm wind. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

Friday

A 50 percent chance of snow, mainly between 10am and 4pm. Partly sunny, with a high near 28. 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 14.

Saturday

Mostly sunny, with a high near 28.

Saturday Night

Mostly cloudy, with a low around 16.

Sunday

Partly sunny, with a high near 29.

Sunday Night

Mostly cloudy, with a low around 19.