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 >

Hazardous Weather Conditions

Flood Watch until December 11, 04:00 PM PST

Current conditions at

Stevens Pass - Tye Mill (STS54)

Lat: 47.73163°NLon: 121.0853°WElev: 5180.0ft.

39°F

4°C

Humidity	NA
Wind Speed	W 5 MPH
Barometer	NA
Dewpoint	N/A
Visibility	NA
Wind Chill	35°F (2°C)
Last update	NA

More Information:

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

Extended Forecast for

9 Miles W Plain WA

Flood Watch December 8, 08:19pm until December 11, 04:00pm

Click here for hazard details and duration

Flood Watch

Flood Watch December 8, 08:19pm until December 11, 04:00pm
NOW until 4:00pm Thu
Flood Watch
Tonight
Low: 28 °F
Windy.
Rain/Snow
then Heavy
Snow
Tuesday
High: 32 °F
Chance Snow
and Breezy
then Heavy
Snow
Tuesday Night
Low: 30 °F⇑
Rain/Snow
Wednesday
High: 38 °F
Rain/Snow and
Breezy
Wednesday Night
Low: 33 °F
Rain/Snow and
Breezy
Thursday
High: 34 °F
Rain/Snow
Thursday Night
Low: 33 °F
Rain/Snow
Likely
Friday
High: 37 °F
Chance
Rain/Snow

Detailed Forecast

Tonight

Snow, possibly mixed with rain, becoming all snow after midnight. The rain and snow could be heavy at times. Low around 28. Windy, with a west wind around 31 mph, with gusts as high as 50 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 4 to 8 inches possible.

Tuesday

A chance of snow before 10am, then snow after 1pm. The snow could be heavy at times. High near 32. Breezy, with a west wind 17 to 22 mph decreasing to 6 to 11 mph in the afternoon. Winds could gust as high as 36 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

Tuesday Night

Rain and snow, becoming all rain after 1am. The rain and snow could be heavy at times. Temperature rising to around 38 by 2am. West wind 5 to 10 mph increasing to 11 to 16 mph after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.

Wednesday

Rain before 7am, then rain and snow. The rain could be heavy at times. High near 38. Breezy, with a west wind 17 to 22 mph, with gusts as high as 41 mph. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.

Wednesday Night

Snow, possibly mixed with rain. Low around 33. Breezy, with a west wind around 21 mph, with gusts as high as 37 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

Thursday

Snow, possibly mixed with rain before 10am, then snow likely between 10am and 1pm, then snow likely, possibly mixed with rain after 1pm. High near 34. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

Thursday Night

Snow likely, possibly mixed with rain, mainly before 10pm. Mostly cloudy, with a low around 33. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

Friday

A chance of rain and snow. Partly sunny, with a high near 37. Chance of precipitation is 40%.

Friday Night

A chance of rain and snow before 4am, then a chance of rain. Mostly cloudy, with a low around 34. Chance of precipitation is 30%.

Saturday

A chance of rain before 7am, then a chance of rain and snow between 7am and 1pm, then rain likely after 1pm. Partly sunny, with a high near 36. Chance of precipitation is 60%.

Saturday Night

Rain and snow likely. Mostly cloudy, with a low around 31. Chance of precipitation is 70%.

Sunday

Snow likely. Mostly cloudy, with a high near 32. Chance of precipitation is 70%.

Sunday Night

Snow likely. Mostly cloudy, with a low around 30. Chance of precipitation is 60%.

Monday

Snow. High near 34. Chance of precipitation is 80%.