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.

light snow,freezing fog

30°F

-1°C

Humidity	100%
Wind Speed	N 0 MPH
Barometer	30.0 in (1015.92 mb)
Dewpoint	30°F (-1°C)
Visibility	0.50 mi
Last update	09 Dec 03:01 AM PST

More Information:

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

Extended Forecast for

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
Overnight
Low: 33 °F
Rain/Snow
Tuesday
High: 38 °F
Rain/Snow
Likely then
Rain/Snow
Tuesday Night
Low: 35 °F⇑
Rain/Snow
then Heavy
Rain
Wednesday
High: 45 °F
Heavy Rain
Wednesday Night
Low: 39 °F
Heavy Rain
Thursday
High: 43 °F
Heavy Rain
Thursday Night
Low: 39 °F
Rain
Friday
High: 44 °F
Rain Likely

Detailed Forecast

Overnight

Snow, possibly mixed with rain. The rain could be heavy at times. Low around 33. Northwest wind around 7 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. Total nighttime snow accumulation of less than one inch possible.

Tuesday

Snow, possibly mixed with rain. The rain could be heavy at times. High near 38. Light and variable wind. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

Tuesday Night

Rain, possibly mixed with snow, becoming all rain after 10pm. The rain could be heavy at times. Temperature rising to around 45 by 4am. Light and variable wind becoming southwest around 5 mph in the evening. Winds could gust as high as 22 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

Wednesday

Rain. The rain could be heavy at times. High near 45. West wind 5 to 7 mph, with gusts as high as 20 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 39. West wind 5 to 7 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.

Thursday

Rain. The rain could be heavy at times. High near 43. Chance of precipitation is 100%.

Thursday Night

Rain. Low around 39. Chance of precipitation is 80%.

Friday

Rain likely, mainly before 10am. Mostly cloudy, with a high near 44. Chance of precipitation is 60%.

Friday Night

A 40 percent chance of rain. Mostly cloudy, with a low around 37.

Saturday

Rain likely, mainly after 4pm. Partly sunny, with a high near 45.

Saturday Night

Rain. Mostly cloudy, with a low around 36.