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 SSW Trinity WA

Flood Watch December 8, 08:18pm until December 11, 04:00pm

Click here for hazard details and duration

Flood Watch

Flood Watch December 8, 08:18pm until December 11, 04:00pm
NOW until 4:00pm Thu
Flood Watch
Tonight
Low: 32 °F
Rain/Snow and
Breezy
Tuesday
High: 34 °F
Chance Snow
then Heavy
Snow
Tuesday Night
Low: 33 °F⇑
Rain/Snow
Wednesday
High: 40 °F
Heavy Rain
then
Rain/Snow
Wednesday Night
Low: 36 °F
Rain/Snow
Thursday
High: 37 °F
Rain/Snow
Thursday Night
Low: 35 °F
Rain/Snow
Likely
Friday
High: 40 °F
Chance
Rain/Snow

Detailed Forecast

Tonight

Rain before 11pm, then rain, possibly mixed with snow between 11pm and 1am, then snow likely after 1am. The rain and snow could be heavy at times. Low around 32. Breezy, with a west wind around 18 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 1 to 3 inches possible.

Tuesday

A chance of snow before 10am, then snow after 1pm. The snow could be heavy at times. High near 34. West wind 6 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

Tuesday Night

Snow before 10pm, then rain, possibly mixed with snow between 10pm and 1am, then rain after 1am. The rain and snow could be heavy at times. Temperature rising to around 39 by 3am. Light and variable wind becoming west 5 to 9 mph in the evening. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.

Wednesday

Rain before 1pm, then rain, possibly mixed with snow. The rain could be heavy at times. High near 40. West wind around 11 mph, with gusts as high as 22 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

Wednesday Night

Rain, possibly mixed with snow. Low around 36. West wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

Thursday

Rain and snow. High near 37. Chance of precipitation is 90%. Little or no snow accumulation expected.

Thursday Night

Rain likely, possibly mixed with snow. Mostly cloudy, with a low around 35. Chance of precipitation is 60%. Little or no snow accumulation expected.

Friday

A chance of rain and snow. Partly sunny, with a high near 40. Chance of precipitation is 50%.

Friday Night

A 40 percent chance of rain. Mostly cloudy, with a low around 37.

Saturday

Rain likely, mainly after 4pm. Partly sunny, with a high near 39. Chance of precipitation is 60%.

Saturday Night

Rain, possibly mixed with snow. Low around 35. Chance of precipitation is 80%.