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

Current conditions at

Stampede Pass (KSMP)

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

rain,mist

44°F

7°C

Humidity	100%
Wind Speed	WSW 10 MPH
Barometer	29.81 in (1009.48 mb)
Dewpoint	44°F (7°C)
Visibility	1.25 mi
Wind Chill	39°F (4°C)
Last update	08 Dec 05:56 PM PST

More Information:

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

Extended Forecast for

14 Miles NE Snoqualmie Pass WA

Flood Watch until December 12, 07:00am

Click here for hazard details and duration

Flood Watch

Flood Watch until December 12, 07:00am
NOW until 7:00am Fri
Flood Watch
Tonight
Low: 26 °F
Rain/Snow and
Breezy
Tuesday
High: 34 °F
Heavy Snow
Tuesday Night
Low: 30 °F⇑
Rain/Snow
Wednesday
High: 37 °F
Rain/Snow
Wednesday Night
Low: 32 °F
Rain/Snow
Thursday
High: 35 °F
Snow then
Rain/Snow
Thursday Night
Low: 33 °F
Rain/Snow
Likely
Friday
High: 37 °F
Chance
Rain/Snow

Detailed Forecast

Tonight

Rain before 10pm, then rain, possibly mixed with snow between 10pm and 1am, then snow after 1am. The rain and snow could be heavy at times. Low around 26. Breezy, with a northwest wind 23 to 28 mph, with gusts as high as 44 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 3 to 5 inches possible.

Tuesday

Snow likely before 10am, then snow after 1pm. The snow could be heavy at times. High near 34. West wind 6 to 14 mph becoming southwest in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

Tuesday Night

Rain and snow before 10pm, then rain between 10pm and 4am, then rain, possibly mixed with snow after 4am. The rain and snow could be heavy at times. Temperature falling to near 30 by 8pm, then rising to around 38 during the remainder of the night. West wind 8 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.

Wednesday

Rain and snow. The rain could be heavy at times. High near 37. West wind 14 to 20 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

Wednesday Night

Rain and snow. Low around 32. West wind around 16 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.

Thursday

Snow before 1pm, then rain and snow. High near 35. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

Thursday Night

Rain likely, possibly mixed with snow, mainly before 10pm. Mostly cloudy, with a low around 33. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

Friday

A chance of rain and snow. Mostly cloudy, with a high near 37. Chance of precipitation is 50%.

Friday Night

A chance of rain and snow before 1am, then a chance of rain. Mostly cloudy, with a low around 33. Chance of precipitation is 30%.

Saturday

Rain and snow likely, mainly after 4pm. Partly sunny, with a high near 36.

Saturday Night

Rain and snow. Mostly cloudy, with a low around 30.

Sunday

Snow. Mostly cloudy, with a high near 31.

Sunday Night

Snow likely. Mostly cloudy, with a low around 29.