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

Stampede Pass (KSMP)

Lat: 47.27648°NLon: 121.33817°WElev: 3970.0ft.

light snow,fog

32°F

0°C

Humidity	100%
Wind Speed	N 0 MPH
Barometer	30.05 in (1017.61 mb)
Dewpoint	32°F (0°C)
Visibility	0.50 mi
Last update	09 Dec 04:56 PM PST

More Information:

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

Extended Forecast for

7 Miles ENE Snoqualmie Pass WA

Flood Watch December 9, 05:50pm until December 12, 07:00am

Click here for hazard details and duration

Flood Watch

Flood Watch December 9, 05:50pm until December 12, 07:00am
NOW until 7:00am Fri
Flood Watch
This Afternoon
High: 33 °F
Rain/Snow
Tonight
Low: 31 °F⇑
Rain/Snow
then Heavy
Rain
Wednesday
High: 41 °F
Heavy Rain
and Windy
Wednesday Night
Low: 32 °F
Windy. Heavy
Rain then
Rain/Snow
Thursday
High: 35 °F
Rain/Snow and
Breezy then
Snow
Thursday Night
Low: 33 °F
Snow
Friday
High: 36 °F
Snow Likely
then
Rain/Snow
Likely
Friday Night
Low: 32 °F
Chance
Rain/Snow

Detailed Forecast

This Afternoon

Snow, possibly mixed with rain. The rain could be heavy at times. High near 33. Southeast wind around 8 mph. Chance of precipitation is 100%. Total daytime snow accumulation of 1 to 2 inches possible.

Tonight

Rain, possibly mixed with snow, becoming all rain after 10pm. The rain could be heavy at times. Temperature rising to around 40 by 5am. Southwest wind 10 to 18 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

Wednesday

Rain. The rain could be heavy at times. High near 41. Windy, with a west wind 25 to 31 mph, with gusts as high as 46 mph. Chance of precipitation is 100%. New precipitation amounts between 3 and 4 inches possible.

Wednesday Night

Rain before 4am, then rain, possibly mixed with snow. The rain could be heavy at times. Low around 32. Windy, with a west wind 33 to 36 mph, with gusts as high as 50 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

Thursday

Rain, possibly mixed with snow, becoming all snow after 7am. High near 35. Breezy, with a west wind 15 to 25 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

Thursday Night

Snow. Low around 33. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

Friday

Snow likely before 1pm, then rain likely. Mostly cloudy, with a high near 36. Chance of precipitation is 70%. Little or no snow accumulation expected.

Friday Night

A chance of rain before 10pm, then a chance of rain and snow. Mostly cloudy, with a low around 32. Chance of precipitation is 50%.

Saturday

A chance of rain and snow. Partly sunny, with a high near 37. Chance of precipitation is 30%.

Saturday Night

Snow, possibly mixed with rain, mainly after 10pm. Mostly cloudy, with a low around 30.

Sunday

Snow. Mostly cloudy, with a high near 33.

Sunday Night

Snow. Mostly cloudy, with a low around 30.

Monday

Rain and snow. Mostly cloudy, with a high near 34.