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

38°F

3°C

Humidity	100%
Wind Speed	NW 14 MPH
Barometer	29.86 in (1011.18 mb)
Dewpoint	38°F (3°C)
Visibility	2.50 mi
Wind Chill	30°F (-1°C)
Last update	08 Dec 11:23 PM PST

More Information:

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

Extended Forecast for

3 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: 30 °F
Rain/Snow and
Windy
Tuesday
High: 38 °F
Snow
Tuesday Night
Low: 33 °F⇑
Rain/Snow
then Heavy
Rain and
Breezy
Wednesday
High: 42 °F
Rain/Snow and
Breezy
Wednesday Night
Low: 34 °F
Rain/Snow
Thursday
High: 39 °F
Rain/Snow
Thursday Night
Low: 37 °F
Rain/Snow
Likely
Friday
High: 39 °F
Chance
Rain/Snow

Detailed Forecast

Tonight

Rain, possibly mixed with snow, becoming all snow after 1am. The rain and snow could be heavy at times. Low around 30. Windy, with a northwest wind 28 to 30 mph, with gusts as high as 41 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of less than a half inch possible.

Tuesday

Snow. High near 38. West wind 6 to 13 mph becoming south in the afternoon. Chance of precipitation is 80%. New snow accumulation of around an inch possible.

Tuesday Night

Rain, possibly mixed with snow, becoming all rain after 10pm. The rain could be heavy at times. Temperature falling to near 33 by 8pm, then rising to around 43 during the remainder of the night. Breezy, with a south wind 9 to 14 mph becoming west 17 to 22 mph after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.

Wednesday

Rain and snow. The rain could be heavy at times. High near 42. Breezy, with a west wind 15 to 24 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

Wednesday Night

Rain, possibly mixed with snow. The rain could be heavy at times. Low around 34. West wind around 18 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

Thursday

Rain and snow before 10am, then snow between 10am and 1pm, then rain and snow after 1pm. High near 39. Chance of precipitation is 90%. Little or no snow accumulation expected.

Thursday Night

Rain likely, possibly mixed with snow, mainly before 10pm. Mostly cloudy, with a low around 37. Chance of precipitation is 70%. Little or no snow accumulation expected.

Friday

A chance of rain and snow. Mostly cloudy, with a high near 39. Chance of precipitation is 50%.

Friday Night

A 30 percent chance of rain. Mostly cloudy, with a low around 34.

Saturday

Rain likely, mainly after 4pm. Partly sunny, with a high near 39.

Saturday Night

Rain and snow. Mostly cloudy, with a low around 31.

Sunday

Snow. Mostly cloudy, with a high near 34.

Sunday Night

Snow likely. Mostly cloudy, with a low around 32.