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

6 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
Overnight
Low: 34 °F
Rain/Snow
Tuesday
High: 39 °F
Rain/Snow
Likely then
Rain/Snow
Tuesday Night
Low: 36 °F⇑
Rain/Snow
then Heavy
Rain
Wednesday
High: 47 °F
Heavy Rain
Wednesday Night
Low: 40 °F
Heavy Rain
Thursday
High: 44 °F
Rain
Thursday Night
Low: 40 °F
Rain Likely
Friday
High: 46 °F
Chance Rain

Detailed Forecast

Overnight

Snow, possibly mixed with rain. The rain could be heavy at times. Low around 34. Northwest wind around 10 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. Total nighttime snow accumulation of around an inch possible.

Tuesday

Snow, possibly mixed with rain. The rain could be heavy at times. High near 39. West wind around 6 mph becoming light and variable 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 44 by 4am. Southeast wind 5 to 8 mph becoming west after midnight. Winds could gust as high as 25 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 47. West wind 8 to 10 mph, with gusts as high as 23 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 25 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.

Thursday

Rain. High near 44. Chance of precipitation is 90%.

Thursday Night

Rain likely. Mostly cloudy, with a low around 40. Chance of precipitation is 70%.

Friday

A 50 percent chance of rain. Mostly cloudy, with a high near 46.

Friday Night

A 40 percent chance of rain. Mostly cloudy, with a low around 38.

Saturday

A chance of rain. Partly sunny, with a high near 46.

Saturday Night

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