Prolonged Atmospheric River in the Northwest; Snow in the North-Central US

A prolonged atmospheric river will bring heavy rainfall which may lead to widespread urban and river flooding, heavy mountain snow, along with gusty winds to the Pacific Northwest into the northern Rockies through much of the week. A clipper will bring a period of snow across the upper Midwest and the Great Lakes into Tuesday, before a stronger system bring more wintry impacts. Read More >

Current conditions at

NCSB (NCSW1)

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

36°F

2°C

Humidity	100%
Wind Speed	NNE 3 MPH
Barometer	NA
Dewpoint	36°F (2°C)
Visibility	NA
Last update	09 Dec 01:06 AM PST

More Information:

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

Extended Forecast for

13 Miles SW Twisp WA

Overnight
Low: 20 °F
Heavy Snow
and Windy
Tuesday
High: 27 °F
Partly Sunny
and Breezy
then Heavy
Snow
Tuesday Night
Low: 23 °F⇑
Heavy Snow
then
Rain/Snow
Wednesday
High: 32 °F
Breezy.
Rain/Snow
then Heavy
Snow
Wednesday Night
Low: 26 °F
Heavy Snow
Thursday
High: 28 °F
Snow
Thursday Night
Low: 23 °F
Chance Snow
Friday
High: 29 °F
Chance Snow
Friday Night
Low: 25 °F
Chance Snow

Detailed Forecast

Overnight

Snow likely. The snow could be heavy at times. Cloudy, then gradually becoming partly cloudy, with a low around 20. Windy, with a west wind around 25 mph, with gusts as high as 41 mph. Chance of precipitation is 60%. Total nighttime snow accumulation of 8 to 12 inches possible.

Tuesday

Snow likely, mainly after 4pm. The snow could be heavy at times. Mostly cloudy, with a high near 27. Breezy, with a west wind 17 to 22 mph decreasing to 6 to 11 mph in the afternoon. Winds could gust as high as 34 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 3 inches possible.

Tuesday Night

Snow before 4am, then snow, possibly mixed with rain. The rain and snow could be heavy at times. Temperature rising to around 32 by 5am. Southwest wind 7 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New snow accumulation of 11 to 17 inches possible.

Wednesday

Snow, possibly mixed with rain, becoming all snow after 10am. The rain and snow could be heavy at times. High near 32. Breezy, with a west wind 15 to 20 mph, with gusts as high as 36 mph. Chance of precipitation is 90%. New snow accumulation of 8 to 12 inches possible.

Wednesday Night

Snow. The snow could be heavy at times. Low around 26. West wind 15 to 17 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New snow accumulation of 7 to 11 inches possible.

Thursday

Snow. High near 28. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

Thursday Night

A 40 percent chance of snow, mainly before 4am. Mostly cloudy, with a low around 23. New snow accumulation of less than a half inch possible.

Friday

A 40 percent chance of snow, mainly after 10am. Mostly cloudy, with a high near 29.

Friday Night

A 30 percent chance of snow, mainly before 10pm. Mostly cloudy, with a low around 25.

Saturday

A 30 percent chance of snow after 10am. Partly sunny, with a high near 27.

Saturday Night

Snow likely. Mostly cloudy, with a low around 23. Chance of precipitation is 60%.