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	100%
Wind Speed	NNW 3 MPH
Barometer	NA
Dewpoint	35°F (2°C)
Visibility	NA
Last update	09 Dec 09:06 PM PST

More Information:

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

Extended Forecast for

8 Miles WSW Twisp WA

Tonight
Low: 31 °F⇑
Heavy Snow
then
Rain/Snow
Wednesday
High: 42 °F
Heavy Rain
Wednesday Night
Low: 35 °F
Rain
Thursday
High: 37 °F
Rain/Snow
Likely
Thursday Night
Low: 33 °F
Chance Snow
Friday
High: 39 °F
Chance
Rain/Snow
Friday Night
Low: 33 °F
Chance
Rain/Snow
Saturday
High: 34 °F
Slight Chance
Rain/Snow
Saturday Night
Low: 31 °F
Chance
Rain/Snow

Detailed Forecast

Tonight

Snow before 1am, then rain, possibly mixed with snow. The snow could be heavy at times. Temperature rising to around 38 by 5am. Calm wind becoming east around 6 mph after midnight. Chance of precipitation is 100%. Total nighttime snow accumulation of 3 to 5 inches possible.

Wednesday

Rain. The rain could be heavy at times. High near 42. Northwest wind 8 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.

Wednesday Night

Rain. Low around 35. West wind 10 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.

Thursday

Rain and snow likely before 1pm, then a chance of snow. Partly sunny, with a high near 37. West wind 8 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

Thursday Night

A 40 percent chance of snow. Mostly cloudy, with a low around 33. West wind around 6 mph. Little or no snow accumulation expected.

Friday

A chance of snow before 10am, then a chance of rain and snow between 10am and 1pm, then a chance of rain after 1pm. Partly sunny, with a high near 39. Chance of precipitation is 40%. Little or no snow accumulation expected.

Friday Night

A chance of rain, mixing with snow after 7pm, then gradually ending. Mostly cloudy, with a low around 33. Chance of precipitation is 40%. Little or no snow accumulation expected.

Saturday

A slight chance of rain and snow after 10am. Partly sunny, with a high near 34. Chance of precipitation is 20%.

Saturday Night

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

Sunday

A chance of rain and snow. Partly sunny, with a high near 36. Chance of precipitation is 50%.

Sunday Night

A chance of rain and snow. Mostly cloudy, with a low around 30. Chance of precipitation is 40%.

Monday

Rain and snow. High near 34. Chance of precipitation is 80%.

Monday Night

Rain and snow. Low around 31. Chance of precipitation is 80%.