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	30.03 in (1016.93 mb)
Dewpoint	32°F (0°C)
Visibility	0.25 mi
Last update	09 Dec 05:56 PM PST

More Information:

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

Extended Forecast for

11 Miles E Snoqualmie Pass WA

Flood Watch December 9, 06:05pm until December 12, 07:00am

Click here for hazard details and duration

Flood Watch

Flood Watch December 9, 06:05pm until December 12, 07:00am
NOW until 7:00am Fri
Flood Watch
Tonight
Low: 38 °F⇑
Rain/Snow
then Heavy
Rain
Wednesday
High: 51 °F
Heavy Rain
Wednesday Night
Low: 40 °F
Heavy Rain
Thursday
High: 47 °F
Rain
Thursday Night
Low: 39 °F
Rain Likely
Friday
High: 48 °F
Rain/Snow
Likely
Friday Night
Low: 39 °F
Chance Rain
Saturday
High: 49 °F
Chance Rain

Detailed Forecast

Tonight

Rain, possibly mixed with snow, becoming all rain after 7pm. The rain could be heavy at times. Temperature rising to around 45 by 4am. Light and variable wind becoming southwest around 6 mph after midnight. Chance of precipitation is 100%. Little or no snow accumulation expected.

Wednesday

Rain. The rain could be heavy at times. High near 51. West wind 10 to 15 mph, with gusts as high as 31 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 14 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. High near 47. West wind around 9 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

Thursday Night

Rain likely. Mostly cloudy, with a low around 39. West wind 3 to 5 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

Friday

Rain likely, possibly mixed with snow before 1pm, then a chance of rain. Mostly cloudy, with a high near 48. Chance of precipitation is 60%. Little or no snow accumulation expected.

Friday Night

A 50 percent chance of rain. Mostly cloudy, with a low around 39.

Saturday

A 30 percent chance of rain. Partly sunny, with a high near 49.

Saturday Night

Rain likely, mainly after 10pm. Mostly cloudy, with a low around 37. Chance of precipitation is 60%.

Sunday

Rain likely. Mostly cloudy, with a high near 45.

Sunday Night

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

Monday

Rain. Mostly cloudy, with a high near 46.