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.

unknown precip,mist

32°F

0°C

Humidity	100%
Wind Speed	N 0 MPH
Barometer	29.94 in (1013.89 mb)
Dewpoint	32°F (0°C)
Visibility	0.75 mi
Last update	09 Dec 09:23 PM PST

More Information:

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

Extended Forecast for

6 Miles E Snoqualmie Pass WA

Flood Watch December 9, 09:37pm until December 12, 07:00am

Click here for hazard details and duration

Flood Watch

Flood Watch December 9, 09:37pm until December 12, 07:00am
NOW until 7:00am Fri
Flood Watch
Tonight
Low: 37 °F⇑
Heavy Rain
Wednesday
High: 48 °F
Heavy Rain
Wednesday Night
Low: 40 °F
Heavy Rain
Thursday
High: 44 °F
Rain then
Rain/Snow
Thursday Night
Low: 38 °F
Rain/Snow
then Rain
Likely
Friday
High: 45 °F
Rain/Snow
Likely
Friday Night
Low: 38 °F
Chance Rain
Saturday
High: 46 °F
Chance Rain

Detailed Forecast

Tonight

Rain. The rain could be heavy at times. Temperature rising to around 44 by 4am. Light and variable wind becoming southwest around 6 mph after midnight. Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.

Wednesday

Rain. The rain could be heavy at times. High near 48. West wind 10 to 16 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New precipitation amounts between 3 and 4 inches possible.

Wednesday Night

Rain. The rain could be heavy at times. Low around 40. West wind 13 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.

Thursday

Rain before 4pm, then rain, possibly mixed with snow. High near 44. West wind around 9 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

Thursday Night

Rain, possibly mixed with snow, becoming all rain after 7pm. Low around 38. Light west wind. Chance of precipitation is 80%. Little or no snow accumulation expected.

Friday

Rain likely, possibly mixed with snow, becoming all rain after 1pm. Mostly cloudy, with a high near 45. Chance of precipitation is 70%. Little or no snow accumulation expected.

Friday Night

A 50 percent chance of rain. Mostly cloudy, with a low around 38.

Saturday

A 30 percent chance of rain. Partly sunny, with a high near 46.

Saturday Night

Rain, mainly after 10pm. Low around 36. Chance of precipitation is 80%.

Sunday

Rain. Mostly cloudy, with a high near 42.

Sunday Night

Rain likely. Mostly cloudy, with a low around 36.

Monday

Rain. Mostly cloudy, with a high near 43.