Strong Atmospheric River Bringing Heavy Rain to the Pacific Northwest; Areas of Snow in the North-Central and Eastern U.S.

A strong atmospheric river will bring prolonged heavy rainfall along with gusty winds to the Pacific Northwest through much of this week. The heavy rainfall may lead to widespread urban and river flooding. Accumulating snow is expected over parts of the central Appalachians and Mid-Atlantic today as well as the Upper Midwest and the Upper Great Lakes this evening into Tuesday. Read More >

Hazardous Weather Conditions

Flood Watch until December 11, 04:00 PM PST

Current conditions at

NCSB (NCSW1)

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

34°F

1°C

Humidity	100%
Wind Speed	N 1 MPH
Barometer	NA
Dewpoint	34°F (1°C)
Visibility	NA
Last update	08 Dec 04:06 PM PST

More Information:

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

Extended Forecast for

16 Miles SW Twisp WA

Flood Watch December 8, 04:17pm until December 11, 04:00pm

Click here for hazard details and duration

Flood Watch

Flood Watch December 8, 04:17pm until December 11, 04:00pm
NOW until 4:00pm Thu
Flood Watch
This Afternoon
High: 31 °F
Rain/Snow and
Breezy
Tonight
Low: 20 °F
Rain/Snow and
Breezy then
Heavy Snow
and Windy
Tuesday
High: 27 °F
Partly Sunny
and Breezy
then Heavy
Snow
Tuesday Night
Low: 22 °F
Heavy Snow
Wednesday
High: 31 °F
Heavy Snow
and Breezy
Wednesday Night
Low: 27 °F
Heavy Snow
Thursday
High: 28 °F
Snow Likely
Thursday Night
Low: 23 °F
Chance Snow

Detailed Forecast

This Afternoon

Snow, possibly mixed with rain. The rain and snow could be heavy at times. High near 31. Breezy, with a west wind around 18 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. Total daytime snow accumulation of 7 to 11 inches possible.

Tonight

Snow, possibly mixed with rain, becoming all snow after 7pm. The rain and snow could be heavy at times. Low around 20. Windy, with a west wind 21 to 25 mph, with gusts as high as 41 mph. Chance of precipitation is 100%. New snow accumulation of 9 to 13 inches possible.

Tuesday

Snow likely, mainly after 4pm. The snow could be heavy at times. Increasing clouds, with a high near 27. Breezy, with a west wind 16 to 21 mph decreasing to 9 to 14 mph in the afternoon. Winds could gust as high as 32 mph. Chance of precipitation is 60%. New snow accumulation of 2 to 4 inches possible.

Tuesday Night

Snow. The snow could be heavy at times. Low around 22. West wind 6 to 9 mph. Chance of precipitation is 100%. New snow accumulation of 13 to 19 inches possible.

Wednesday

Snow. The snow could be heavy at times. High near 31. Breezy, with a west wind around 18 mph, with gusts as high as 32 mph. Chance of precipitation is 90%. New snow accumulation of 9 to 13 inches possible.

Wednesday Night

Snow. The snow could be heavy at times. Low around 27. Chance of precipitation is 80%. New snow accumulation of 10 to 14 inches possible.

Thursday

Snow likely. Mostly cloudy, with a high near 28. Chance of precipitation is 70%. New snow accumulation of 2 to 4 inches possible.

Thursday Night

A 40 percent chance of snow. Mostly cloudy, with a low around 23.

Friday

A 30 percent chance of snow. Mostly cloudy, with a high near 30.

Friday Night

A 30 percent chance of snow, mainly before 10pm. Mostly cloudy, with a low around 26.

Saturday

A 40 percent chance of snow. Partly sunny, with a high near 29.