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 >

Hazardous Weather Conditions

Flood Watch until December 12, 07:00 AM PST

Current conditions at

Stevens Pass - Tye Mill (STS54)

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

30°F

-1°C

Humidity	NA
Wind Speed	ESE 6 MPH
Barometer	NA
Dewpoint	N/A
Visibility	NA
Wind Chill	24°F (-4°C)
Last update	NA

More Information:

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

Extended Forecast for

15 Miles WSW Trinity WA

Flood Watch December 9, 06:02pm until December 12, 07:00am

Click here for hazard details and duration

Flood Watch

Flood Watch December 9, 06:02pm until December 12, 07:00am
NOW until 7:00am Fri
Flood Watch
Tonight
Low: 29 °F⇑
Rain/Snow
then Heavy
Rain
Wednesday
High: 38 °F
Heavy Rain
Wednesday Night
Low: 29 °F
Heavy Rain
then
Rain/Snow and
Breezy
Thursday
High: 31 °F
Rain/Snow
then Snow
Thursday Night
Low: 29 °F
Snow
Friday
High: 34 °F
Snow then
Rain/Snow
Friday Night
Low: 31 °F
Rain/Snow
Likely
Saturday
High: 33 °F
Chance
Rain/Snow

Detailed Forecast

Tonight

Snow before 10pm, then rain. The rain and snow could be heavy at times. Temperature rising to around 38 by 5am. East wind 7 to 14 mph becoming west after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 2 to 4 inches possible.

Wednesday

Rain. The rain could be heavy at times. High near 38. West wind around 15 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New precipitation amounts in excess of 4 inches possible.

Wednesday Night

Rain before 1am, then rain, possibly mixed with snow. The rain could be heavy at times. Low around 29. Breezy, with a west wind around 18 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.

Thursday

Snow, possibly mixed with rain, becoming all snow after 8am. High near 31. West wind 10 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

Thursday Night

Snow. Low around 29. West wind around 9 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.

Friday

Snow before 1pm, then rain and snow. High near 34. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

Friday Night

Rain likely, possibly mixed with snow, mainly before 10pm. Mostly cloudy, with a low around 31. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

Saturday

A chance of rain and snow before 4pm, then a chance of rain. Mostly cloudy, with a high near 33. Chance of precipitation is 40%.

Saturday Night

Snow, possibly mixed with rain. The snow could be heavy at times. Low around 29. Chance of precipitation is 80%.

Sunday

Snow, possibly mixed with rain, becoming all snow after 7am. The snow could be heavy at times. High near 31. Chance of precipitation is 80%.

Sunday Night

Snow, possibly mixed with rain. Low around 28. Chance of precipitation is 80%.

Monday

Rain and snow. The snow could be heavy at times. High near 32. Chance of precipitation is 90%.

Monday Night

Rain and snow. The snow could be heavy at times. Low around 28. Chance of precipitation is 90%.