Strong Atmospheric River Bringing Heavy Rain to the Pacific Northwest; Areas of Snow in the North-Central and Eastern U.S.

A strong atmospheric river will bring prolonged heavy rainfall along with gusty winds to the Pacific Northwest through much of this week. The heavy rainfall may lead to widespread urban and river flooding. Accumulating snow is expected over parts of the central Appalachians and Mid-Atlantic today as well as the Upper Midwest and the Upper Great Lakes this evening into Tuesday. Read More >

Hazardous Weather Conditions

Current conditions at

Stampede Pass (KSMP)

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

rain,fog

45°F

7°C

Humidity	100%
Wind Speed	NA 6 MPH
Barometer	29.85 in (1010.84 mb)
Dewpoint	45°F (7°C)
Visibility	0.50 mi
Wind Chill	42°F (6°C)
Last update	08 Dec 02:24 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

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
This Afternoon
High: 48 °F
Heavy Rain
Tonight
Low: 35 °F
Heavy Rain
then
Rain/Snow
Tuesday
High: 41 °F
Rain/Snow
Tuesday Night
Low: 36 °F
Rain/Snow
then Heavy
Rain
Wednesday
High: 48 °F
Heavy Rain
Wednesday Night
Low: 40 °F
Heavy Rain
Thursday
High: 45 °F
Rain
Thursday Night
Low: 40 °F
Rain Likely

Detailed Forecast

This Afternoon

Rain. The rain could be heavy at times. High near 48. West wind around 13 mph, with gusts as high as 31 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

Tonight

Rain before 1am, then rain and snow. The rain could be heavy at times. Low around 35. West wind 8 to 14 mph becoming northwest after midnight. Winds could gust as high as 39 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

Tuesday

Rain, possibly mixed with snow, mainly after 1pm. High near 41. Light and variable wind. Chance of precipitation is 80%. Little or no snow accumulation expected.

Tuesday Night

Rain, possibly mixed with snow, becoming all rain after 7pm. The rain could be heavy at times. Low around 36. Calm wind becoming west 5 to 7 mph in the evening. Winds could gust as high as 24 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

Wednesday

Rain. The rain could be heavy at times. High near 48. West wind around 9 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.

Wednesday Night

Rain. The rain could be heavy at times. Low around 40. Chance of precipitation is 100%.

Thursday

Rain. High near 45. Chance of precipitation is 90%.

Thursday Night

Rain likely, mainly before 10pm. Mostly cloudy, with a low around 40. Chance of precipitation is 70%.

Friday

A 50 percent chance of rain. Mostly cloudy, with a high near 47.

Friday Night

A chance of rain. Mostly cloudy, with a low around 40.

Saturday

Rain likely. Partly sunny, with a high near 47.