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.

snow,freezing fog

31°F

-1°C

Humidity	100%
Wind Speed	N 0 MPH
Barometer	30.02 in (1016.59 mb)
Dewpoint	31°F (-1°C)
Visibility	0.50 mi
Last update	09 Dec 03:56 AM PST

More Information:

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

Extended Forecast for

5 Miles S 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: 34 °F
Rain/Snow
Likely
Tuesday
High: 38 °F
Rain/Snow
Likely then
Rain/Snow
Tuesday Night
Low: 34 °F⇑
Rain/Snow
then Heavy
Rain
Wednesday
High: 46 °F
Heavy Rain
Wednesday Night
Low: 40 °F
Heavy Rain
Thursday
High: 42 °F
Rain
Thursday Night
Low: 39 °F
Rain Likely
Friday
High: 44 °F
Rain Likely

Detailed Forecast

Overnight

Snow likely, possibly mixed with rain. Cloudy, with a low around 34. West wind around 7 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. Total nighttime snow accumulation of around an inch possible.

Tuesday

Snow likely, possibly mixed with rain before 7am, then rain and snow after 10am. High near 38. West wind around 6 mph becoming calm in the morning. 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. Southeast wind 5 to 8 mph becoming west after midnight. Winds could gust as high as 30 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 46. West wind 7 to 9 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.

Wednesday Night

Rain. The rain could be heavy at times. Low around 40. West wind 8 to 10 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.

Thursday

Rain. High near 42. Chance of precipitation is 90%.

Thursday Night

Rain likely. Mostly cloudy, with a low around 39. Chance of precipitation is 70%.

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 38.

Saturday

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

Saturday Night

Rain. Mostly cloudy, with a low around 36.