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.

30°F

-1°C

Humidity	NA
Wind Speed	W 15 MPH
Barometer	NA
Dewpoint	N/A
Visibility	NA
Wind Chill	19°F (-7°C)
Last update	NA

More Information:

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

Extended Forecast for

6 Miles SSW Trinity WA

Flood Watch December 9, 02:23am until December 11, 04:00pm

Click here for hazard details and duration

Flood Watch

Flood Watch December 9, 02:23am until December 11, 04:00pm
NOW until 4:00pm Thu
Flood Watch
Overnight
Low: 27 °F
Heavy Snow
and Windy
Tuesday
High: 29 °F
Slight Chance
Snow and
Breezy then
Chance Snow
Tuesday Night
Low: 27 °F⇑
Heavy Snow
then
Rain/Snow
Wednesday
High: 37 °F
Rain/Snow
Wednesday Night
Low: 30 °F
Heavy Snow
and Breezy
Thursday
High: 33 °F
Heavy Snow
and Breezy
Thursday Night
Low: 30 °F
Snow Likely
Friday
High: 34 °F
Snow Likely
then
Rain/Snow
Likely

Detailed Forecast

Overnight

Snow, mainly before 4am. The snow could be heavy at times. Low around 27. Windy, with a west wind around 29 mph, with gusts as high as 47 mph. Chance of precipitation is 90%. Total nighttime snow accumulation of 3 to 7 inches possible.

Tuesday

A slight chance of snow before 7am, then a chance of snow after 1pm. Increasing clouds, with a high near 29. Breezy, with a west wind 15 to 20 mph decreasing to 5 to 10 mph in the afternoon. Winds could gust as high as 32 mph. Chance of precipitation is 50%. New snow accumulation of 1 to 3 inches possible.

Tuesday Night

Snow before midnight, then rain and snow between midnight and 1am, then rain after 1am. The rain and snow could be heavy at times. Temperature rising to around 37 by 5am. South wind 7 to 17 mph becoming west after midnight. Chance of precipitation is 100%. New snow accumulation of 4 to 8 inches possible.

Wednesday

Rain and snow, becoming all snow after 1pm. The rain and snow could be heavy at times. High near 37. West wind 14 to 17 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.

Wednesday Night

Snow. The snow could be heavy at times. Low around 30. Breezy, with a west wind 16 to 18 mph. Chance of precipitation is 90%. New snow accumulation of 5 to 9 inches possible.

Thursday

Snow. The snow could be heavy at times. High near 33. Breezy. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.

Thursday Night

Snow likely, mainly before 4am. Mostly cloudy, with a low around 30. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

Friday

Snow likely before 1pm, then snow likely, possibly mixed with rain. Mostly cloudy, with a high near 34. Chance of precipitation is 60%.

Friday Night

A chance of rain and snow before 7pm, then a chance of snow. Mostly cloudy, with a low around 31. Chance of precipitation is 40%.

Saturday

A 40 percent chance of snow. Partly sunny, with a high near 34.

Saturday Night

Snow likely. Mostly cloudy, with a low around 28. Chance of precipitation is 70%.

Sunday

Snow likely. Mostly cloudy, with a high near 30. Chance of precipitation is 70%.

Sunday Night

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