Tracking Atmospheric River in the Northwest U.S. and Clipper with Winter Weather in the Northeast U.S.

A prolonged atmospheric river will continue to bring gusty winds, heavy rainfall which may lead to urban and river flooding with possible landslides, and heavy inter-mountain snow over the Pacific Northwest into the northern Rockies through Thursday. A clipper will cross the Great Lakes and Northeast U.S. into Thursday with areas of moderate to heavy snow and mixed wintry precipitation. Read More >

Hazardous Weather Conditions

Flood Advisory in effect from December 10, 11:49 PM PST until December 11, 11:45 AM PST

Current conditions at

NCSB (NCSW1)

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

42°F

6°C

Humidity	93%
Wind Speed	NNW 2 MPH
Barometer	NA
Dewpoint	40°F (4°C)
Visibility	NA
Last update	11 Dec 03:06 AM PST

More Information:

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

Extended Forecast for

13 Miles SW Twisp WA

Flood Advisory until December 11, 11:45am

Click here for hazard details and duration

Flood Advisory

Flood Advisory until December 11, 11:45am
NOW until 11:45am Thu
Flood Advisory
Overnight
Low: 27 °F
Snow and
Windy
Thursday
High: 27 °F
Snow and
Windy then
Chance Snow
Thursday Night
Low: 23 °F⇑
Chance Snow
Friday
High: 31 °F
Chance Snow
Friday Night
Low: 27 °F
Slight Chance
Snow
Saturday
High: 30 °F
Partly Sunny
Saturday Night
Low: 23 °F
Chance Snow
then Snow
Likely
Sunday
High: 28 °F
Snow Likely

Detailed Forecast

Overnight

Snow. Steady temperature around 27. Windy, with a west wind around 29 mph, with gusts as high as 44 mph. Chance of precipitation is 90%. Total nighttime snow accumulation of 2 to 4 inches possible.

Thursday

Snow, mainly before 10am. High near 27. Windy, with a west wind 23 to 28 mph decreasing to 10 to 15 mph in the afternoon. Winds could gust as high as 40 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

Thursday Night

A 30 percent chance of snow, mainly between 10pm and 1am. Mostly cloudy, with a temperature falling to near 23 by 8pm, then rising to around 29 during the remainder of the night. West wind around 11 mph, with gusts as high as 20 mph. New snow accumulation of less than a half inch possible.

Friday

A 40 percent chance of snow. Partly sunny, with a high near 31. West wind around 10 mph. New snow accumulation of less than a half inch possible.

Friday Night

A 20 percent chance of snow. Mostly cloudy, with a low around 27. West wind 10 to 14 mph, with gusts as high as 23 mph.

Saturday

Partly sunny, with a high near 30.

Saturday Night

Snow likely, mainly after 4am. Mostly cloudy, with a low around 23. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

Sunday

Snow likely, mainly before 10am. Partly sunny, with a high near 28. Chance of precipitation is 60%.

Sunday Night

Snow likely, mainly after 10pm. Mostly cloudy, with a low around 26. Chance of precipitation is 60%.

Monday

Snow. High near 28. Chance of precipitation is 90%.

Monday Night

Snow. Low around 22. Breezy. Chance of precipitation is 90%.

Tuesday

Snow. The snow could be heavy at times. High near 24. Chance of precipitation is 80%.

Tuesday Night

Snow. The snow could be heavy at times. Low around 19. Breezy. Chance of precipitation is 80%.