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.

34°F

1°C

Humidity	93%
Wind Speed	NW 3 MPH
Barometer	NA
Dewpoint	32°F (0°C)
Visibility	NA
Last update	24 Dec 01:06 PM PST

More Information:

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

Extended Forecast for

3 Miles SSW Winthrop WA

Winter Weather Advisory December 24, 01:31pm until December 24, 04:00pm

Click here for hazard details and duration

Winter Weather Advisory

Winter Weather Advisory December 24, 01:31pm until December 24, 04:00pm
NOW until 4:00pm Wed
Winter Weather Advisory
This Afternoon
High: 32 °F
Chance Rain
Tonight
Low: 21 °F
Chance Rain
and Patchy
Freezing Fog
then Patchy
Freezing Fog
Christmas Day
High: 30 °F
Rain/Snow
Likely and
Patchy
Freezing Fog
Thursday Night
Low: 23 °F
Rain Likely
then Chance
Rain
Friday
High: 30 °F
Rain/Snow
Likely
Friday Night
Low: 15 °F
Slight Chance
Snow then
Partly Cloudy
Saturday
High: 32 °F
Mostly Sunny
Saturday Night
Low: 13 °F
Mostly Cloudy

Detailed Forecast

This Afternoon

A 30 percent chance of rain. Mostly cloudy, with a high near 32. Southwest wind around 5 mph. New precipitation amounts of less than a tenth of an inch possible.

Tonight

A 30 percent chance of rain before 7pm. Patchy freezing fog after 10pm. Partly cloudy, with a low around 21. Calm wind.

Christmas Day

Rain and snow likely before 2pm, then snow likely between 2pm and 4pm, then rain and snow likely after 4pm. Patchy freezing fog before 1pm. Mostly cloudy, with a high near 30. Calm wind. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

Thursday Night

Rain likely, mainly before 10pm. Mostly cloudy, with a low around 23. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

Friday

Rain likely, possibly mixed with snow, mainly after 10am. Mostly cloudy, with a high near 30. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

Friday Night

A 20 percent chance of snow before 10pm. Mostly cloudy, with a low around 15.

Saturday

Mostly sunny, with a high near 32.

Saturday Night

Mostly cloudy, with a low around 13.

Sunday

Partly sunny, with a high near 32.

Sunday Night

Mostly cloudy, with a low around 16.

Monday

Mostly cloudy, with a high near 32.