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: 19 °F
Heavy Snow
and Very
Windy
Tuesday
High: 26 °F
Partly Sunny
and Windy
then Heavy
Snow and
Breezy
Tuesday Night
Low: 20 °F⇑
Heavy Snow
and Breezy
Wednesday
High: 30 °F
Heavy Snow
and Windy
Wednesday Night
Low: 23 °F
Heavy Snow
and Breezy
Thursday
High: 26 °F
Snow and
Windy
Thursday Night
Low: 20 °F
Chance Snow
Friday
High: 27 °F
Chance Snow
Friday Night
Low: 22 °F
Chance Snow

Detailed Forecast

Overnight

Snow likely. The snow could be heavy at times. Mostly cloudy, with a low around 19. Very windy, with a west wind around 37 mph, with gusts as high as 60 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. Partly sunny, with a high near 26. Wind chill values as low as -1. Windy, with a west wind 21 to 26 mph decreasing to 7 to 12 mph in the afternoon. Winds could gust as high as 43 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 3 inches possible.

Tuesday Night

Snow. The snow could be heavy at times. Temperature rising to around 30 by 5am. Breezy, with a west wind 9 to 14 mph increasing to 15 to 20 mph after midnight. Chance of precipitation is 100%. New snow accumulation of 10 to 16 inches possible.

Wednesday

Snow. The snow could be heavy at times. High near 30. Windy, with a west wind 24 to 29 mph decreasing to 18 to 23 mph in the afternoon. 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 23. Breezy, with a west wind 21 to 24 mph. Chance of precipitation is 80%. New snow accumulation of 7 to 11 inches possible.

Thursday

Snow. High near 26. Windy. 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 20. New snow accumulation of less than a half inch possible.

Friday

A 40 percent chance of snow, mainly after 10am. Partly sunny, with a high near 27.

Friday Night

A 30 percent chance of snow, mainly before 10pm. Mostly cloudy, with a low around 22.

Saturday

A 30 percent chance of snow, mainly after 10am. Partly sunny, with a high near 25.

Saturday Night

Snow likely. Mostly cloudy, with a low around 20. Chance of precipitation is 60%.