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 5 MPH
Barometer	29.78 in (1008.47 mb)
Dewpoint	44°F (7°C)
Visibility	0.75 mi
Wind Chill	41°F (5°C)
Last update	08 Dec 08:18 PM PST

More Information:

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

Extended Forecast for

8 Miles E 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: 34 °F
Heavy Rain
then
Rain/Snow
Tuesday
High: 41 °F
Rain/Snow
Tuesday Night
Low: 38 °F⇑
Rain/Snow
then Heavy
Rain
Wednesday
High: 48 °F
Heavy Rain
Wednesday Night
Low: 40 °F
Rain
Thursday
High: 46 °F
Rain
Thursday Night
Low: 40 °F
Rain Likely
Friday
High: 47 °F
Chance Rain

Detailed Forecast

Tonight

Rain before 1am, then snow, possibly mixed with rain. The rain could be heavy at times. Low around 34. Southwest wind 8 to 13 mph becoming northwest after midnight. Winds could gust as high as 38 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

Tuesday

Rain and snow. High near 41. Light and variable wind. Chance of precipitation is 80%. Little or no snow accumulation expected.

Tuesday Night

Rain and snow, becoming all rain after 7pm. The rain could be heavy at times. Temperature rising to around 48 by 3am. Calm wind becoming west 5 to 7 mph in the evening. Winds could gust as high as 21 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

Wednesday

Rain. The rain could be heavy at times. High near 48. West wind 7 to 9 mph, with gusts as high as 22 mph. Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.

Wednesday Night

Rain. Low around 40. West wind around 7 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.

Thursday

Rain. High near 46. Chance of precipitation is 90%.

Thursday Night

Rain likely, mainly before 10pm. Mostly cloudy, with a low around 40. Chance of precipitation is 60%.

Friday

A 40 percent chance of rain. Mostly cloudy, with a high near 47.

Friday Night

A 30 percent chance of rain. Mostly cloudy, with a low around 40.

Saturday

Rain likely, mainly after 4pm. Partly sunny, with a high near 48.

Saturday Night

Rain. Mostly cloudy, with a low around 37.