Prolonged Atmospheric River Will Impact the Northwest Early this Week

A weather system in the Pacific Northwest will produce rain throughout the day, before a potent atmospheric river produces a prolonged round of heavy rainfall, widespread urban and river flooding, and high elevation snow to the region Monday through Wednesday. Showers and thunderstorms may produce isolated damaging winds, a brief tornado, and locally heavy rainfall across parts of Florida today. Read More >

Hazardous Weather Conditions

Hydrologic Outlook

Current conditions at

Stampede Pass (KSMP)

Lat: 47.27648°NLon: 121.33817°WElev: 3970.0ft.

light rain,mist

36°F

2°C

Humidity	100%
Wind Speed	W 11 MPH
Barometer	30.05 in (1017.61 mb)
Dewpoint	36°F (2°C)
Visibility	2.00 mi
Wind Chill	28°F (-2°C)
Last update	07 Dec 08:56 PM PST

More Information:

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

Extended Forecast for

14 Miles ENE Snoqualmie Pass WA

Tonight
Low: 30 °F
Snow and
Breezy
Monday
High: 37 °F
Rain/Snow
Monday Night
Low: 28 °F
Rain/Snow and
Breezy
Tuesday
High: 33 °F
Heavy Snow
Tuesday Night
Low: 30 °F
Rain/Snow
Wednesday
High: 34 °F
Rain/Snow
then Heavy
Snow
Wednesday Night
Low: 31 °F
Heavy Snow
Thursday
High: 33 °F
Heavy Snow
Thursday Night
Low: 32 °F
Rain/Snow
Likely

Detailed Forecast

Tonight

Snow, mainly before 4am. Low around 30. Breezy, with a west wind 18 to 23 mph, with gusts as high as 32 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of 1 to 3 inches possible.

Monday

Snow before 10am, then rain, possibly mixed with snow between 10am and 1pm, then rain after 1pm. The rain and snow could be heavy at times. High near 37. Southwest wind 11 to 13 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

Monday Night

Rain before 10pm, then rain, possibly mixed with snow between 10pm and 1am, then snow after 1am. The rain and snow could be heavy at times. Low around 28. Breezy, with a west wind 23 to 25 mph, with gusts as high as 47 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.

Tuesday

Snow. The snow could be heavy at times. High near 33. West wind 7 to 17 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

Tuesday Night

Snow before 10pm, then rain and snow. The rain and snow could be heavy at times. Low around 30. West wind 9 to 18 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New snow accumulation of 5 to 9 inches possible.

Wednesday

Rain and snow, becoming all snow after 7am. The snow could be heavy at times. High near 34. Chance of precipitation is 100%. New snow accumulation of 8 to 12 inches possible.

Wednesday Night

Snow. The snow could be heavy at times. Low around 31. Chance of precipitation is 80%. New snow accumulation of 8 to 12 inches possible.

Thursday

Snow likely. The snow could be heavy at times. Mostly cloudy, with a high near 33. Chance of precipitation is 70%.

Thursday Night

Rain and snow likely. Mostly cloudy, with a low around 32. Chance of precipitation is 70%.

Friday

A chance of rain and snow. Mostly cloudy, with a high near 36.

Friday Night

A chance of rain and snow. Mostly cloudy, with a low around 32.

Saturday

Rain and snow likely. Partly sunny, with a high near 35.