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.

unknown precip,fog

32°F

0°C

Humidity	100%
Wind Speed	N 0 MPH
Barometer	29.9 in (1012.53 mb)
Dewpoint	32°F (0°C)
Visibility	0.50 mi
Last update	07 Dec 12:12 PM PST

More Information:

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

Extended Forecast for

2 Miles SSE Snoqualmie Pass WA

This Afternoon
High: 43 °F
Rain
Tonight
Low: 37 °F
Rain/Snow
Monday
High: 46 °F
Heavy Rain
Monday Night
Low: 34 °F
Heavy Rain
then
Rain/Snow
Tuesday
High: 41 °F
Rain/Snow
Tuesday Night
Low: 35 °F
Heavy Rain
Wednesday
High: 44 °F
Heavy Rain
Wednesday Night
Low: 37 °F
Heavy Rain
Thursday
High: 43 °F
Rain Likely

Detailed Forecast

This Afternoon

Rain. High near 43. South wind 5 to 9 mph becoming west. Winds could gust as high as 24 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

Tonight

Rain before 10pm, then rain, possibly mixed with snow between 10pm and 1am, then rain likely after 1am. Low around 37. West wind 5 to 9 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

Monday

Rain, mainly after 7am. The rain could be heavy at times. High near 46. Light southwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 33 mph. Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.

Monday Night

Rain before 1am, then rain and snow. The rain could be heavy at times. Low around 34. West wind 11 to 14 mph, with gusts as high as 46 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

Tuesday

Rain, possibly mixed with snow, becoming all rain after 1pm. High near 41. West wind around 6 mph becoming calm in the morning. Chance of precipitation is 90%. Little or no snow accumulation expected.

Tuesday Night

Rain. The rain could be heavy at times. Low around 35. Chance of precipitation is 100%.

Wednesday

Rain. The rain could be heavy at times. High near 44. Chance of precipitation is 100%.

Wednesday Night

Rain. The rain could be heavy at times. Low around 37. Chance of precipitation is 80%.

Thursday

Rain likely. Mostly cloudy, with a high near 43. Chance of precipitation is 70%.

Thursday Night

Rain likely. Mostly cloudy, with a low around 39.

Friday

Rain likely. Mostly cloudy, with a high near 46.