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

37°F

3°C

Humidity	95%
Wind Speed	W 8 MPH
Barometer	30.05 in (1017.61 mb)
Dewpoint	36°F (2°C)
Visibility	1.50 mi
Wind Chill	31°F (-1°C)
Last update	07 Dec 09:07 PM PST

More Information:

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

Extended Forecast for

5 Miles ENE Snoqualmie Pass WA

Tonight
Low: 32 °F
Snow and
Breezy
Monday
High: 41 °F
Rain/Snow
Monday Night
Low: 30 °F
Rain/Snow and
Breezy
Tuesday
High: 36 °F
Heavy Snow
Tuesday Night
Low: 32 °F
Rain/Snow
Wednesday
High: 38 °F
Rain/Snow and
Breezy
Wednesday Night
Low: 33 °F
Rain/Snow
Thursday
High: 37 °F
Rain/Snow
Likely
Thursday Night
Low: 34 °F
Rain/Snow
Likely

Detailed Forecast

Tonight

Snow, mainly before 4am. Low around 32. Breezy, with a west wind 17 to 22 mph, with gusts as high as 33 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of less than a half inch possible.

Monday

Rain, possibly mixed with snow, becoming all rain after 1pm. The rain could be heavy at times. High near 41. Southwest wind 11 to 14 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch 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 30. Breezy, with a west wind 24 to 26 mph, with gusts as high as 49 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 36. West wind 7 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 7 inches possible.

Tuesday Night

Snow before 10pm, then rain, possibly mixed with snow. The rain and snow could be heavy at times. Low around 32. South wind 10 to 20 mph becoming west after midnight. Winds could gust as high as 29 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 38. Breezy. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

Wednesday Night

Rain and snow. The rain could be heavy at times. Low around 33. Chance of precipitation is 80%. New snow accumulation of 4 to 6 inches possible.

Thursday

Rain likely, possibly mixed with snow. Mostly cloudy, with a high near 37. Chance of precipitation is 70%.

Thursday Night

Rain and snow likely. Mostly cloudy, with a low around 34. Chance of precipitation is 70%.

Friday

Rain and snow likely, mainly before 10am. Mostly cloudy, with a high near 39.

Friday Night

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

Saturday

Rain and snow likely. Mostly cloudy, with a high near 39.