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

12 Miles NE 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: 26 °F
Rain/Snow and
Windy
Tuesday
High: 34 °F
Heavy Snow
Tuesday Night
Low: 30 °F⇑
Rain/Snow and
Breezy
Wednesday
High: 36 °F
Rain/Snow and
Breezy
Wednesday Night
Low: 31 °F
Rain/Snow
Thursday
High: 33 °F
Heavy Snow
Thursday Night
Low: 32 °F
Snow Likely
Friday
High: 35 °F
Chance Snow
then Chance
Rain/Snow

Detailed Forecast

Tonight

Snow, possibly mixed with rain, becoming all snow after 1am. The rain and snow could be heavy at times. Low around 26. Windy, with a northwest wind 28 to 30 mph, with gusts as high as 47 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 7 to 11 inches possible.

Tuesday

Snow, mainly after 1pm. The snow could be heavy at times. High near 34. West wind 6 to 16 mph becoming south in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.

Tuesday Night

Rain and snow before 1am, then rain between 1am and 4am, then rain, possibly mixed with snow after 4am. The rain and snow could be heavy at times. Temperature falling to near 30 by 8pm, then rising to around 38 during the remainder of the night. Breezy, with a west wind 11 to 16 mph increasing to 18 to 23 mph after midnight. Winds could gust as high as 33 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.

Wednesday

Rain and snow. The rain could be heavy at times. High near 36. Breezy, with a west wind 17 to 24 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 2 inches possible.

Wednesday Night

Rain and snow, becoming all snow after 1am. The rain and snow could be heavy at times. Low around 31. West wind around 21 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.

Thursday

Snow. The snow could be heavy at times. High near 33. Chance of precipitation is 90%. New snow accumulation of 3 to 7 inches possible.

Thursday Night

Snow likely. Mostly cloudy, with a low around 32. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

Friday

A chance of snow before 1pm, then a chance of rain and snow. Mostly cloudy, with a high near 35. Chance of precipitation is 50%.

Friday Night

A chance of rain and snow before 1am, then a chance of snow. Mostly cloudy, with a low around 31. Chance of precipitation is 30%.

Saturday

Snow likely, mainly after 4pm. Partly sunny, with a high near 34.

Saturday Night

Snow. Mostly cloudy, with a low around 28.