Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds from the Upper Midwest into the Northeast

A prolonged atmospheric river will continue to impact the Pacific Northwest into the Northern Rockies with heavy rainfall, areas of urban and river flooding, landslides, heavy mountain snow, and gusty winds into Thursday. A strong clipper system will bring the threat of heavy snow and high winds across the Upper Midwest/Great Lakes as well as portions of the interior Northeast and Appalachians. Read More >

Current conditions at

NCSB (NCSW1)

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

35°F

2°C

Humidity	94%
Wind Speed	NNE 1 MPH
Barometer	NA
Dewpoint	33°F (1°C)
Visibility	NA
Last update	09 Dec 05:06 PM PST

More Information:

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

Extended Forecast for

11 Miles WSW Twisp WA

This Afternoon
High: 33 °F
Heavy Snow
Tonight
Low: 28 °F⇑
Heavy Snow
then
Rain/Snow
Wednesday
High: 40 °F
Heavy Rain
and Breezy
Wednesday Night
Low: 33 °F
Heavy Rain
and Breezy
then
Rain/Snow
Thursday
High: 35 °F
Rain/Snow
Likely then
Chance Snow
Thursday Night
Low: 30 °F
Chance Snow
Friday
High: 37 °F
Chance Snow
then Chance
Rain/Snow
Friday Night
Low: 31 °F
Chance
Rain/Snow
Saturday
High: 33 °F
Slight Chance
Snow then
Chance
Rain/Snow

Detailed Forecast

This Afternoon

Snow. The snow could be heavy at times. High near 33. Calm wind. Chance of precipitation is 80%. Total daytime snow accumulation of 1 to 2 inches possible.

Tonight

Snow before 2am, then rain, possibly mixed with snow. The rain and snow could be heavy at times. Temperature falling to near 28 by 9pm, then rising to around 38 during the remainder of the night. Light and variable wind becoming west 5 to 7 mph after midnight. Chance of precipitation is 100%. New snow accumulation of 5 to 9 inches possible.

Wednesday

Rain. The rain could be heavy at times. High near 40. Breezy, with a west wind 18 to 21 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.

Wednesday Night

Rain before 1am, then rain, possibly mixed with snow. The rain could be heavy at times. Low around 33. Breezy, with a west wind 13 to 23 mph, with gusts as high as 37 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

Thursday

Snow likely, possibly mixed with rain before 10am, then a chance of snow. Partly sunny, with a high near 35. West wind 9 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

Thursday Night

A 50 percent chance of snow. Mostly cloudy, with a low around 30. New snow accumulation of less than a half inch possible.

Friday

A chance of snow before 1pm, then a chance of rain and snow. Partly sunny, with a high near 37. Chance of precipitation is 50%. Little or no snow accumulation expected.

Friday Night

A chance of rain and snow, mainly before 10pm. Mostly cloudy, with a low around 31. Chance of precipitation is 40%.

Saturday

A slight chance of snow before 4pm, then a chance of rain and snow. Partly sunny, with a high near 33. Chance of precipitation is 30%.

Saturday Night

A chance of rain and snow before 7pm, then a chance of snow. Mostly cloudy, with a low around 29. Chance of precipitation is 40%.

Sunday

Snow likely. Partly sunny, with a high near 33. Chance of precipitation is 60%.

Sunday Night

A 50 percent chance of snow. Mostly cloudy, with a low around 28.

Monday

Snow, possibly mixed with rain. High near 31. Chance of precipitation is 80%.