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.

heavy rain,fog

34°F

1°C

Humidity	100%
Wind Speed	N 0 MPH
Barometer	29.92 in (1013.21 mb)
Dewpoint	34°F (1°C)
Visibility	0.50 mi
Last update	08 Dec 11:56 AM PST

More Information:

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

Extended Forecast for

9 Miles E 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: 43 °F
Heavy Rain
Tonight
Low: 32 °F
Rain/Snow and
Breezy
Tuesday
High: 38 °F
Snow
Tuesday Night
Low: 34 °F
Rain/Snow
then Heavy
Rain
Wednesday
High: 42 °F
Rain/Snow
Wednesday Night
Low: 37 °F
Rain/Snow
Thursday
High: 41 °F
Rain/Snow
Thursday Night
Low: 39 °F
Rain Likely

Detailed Forecast

This Afternoon

Rain. The rain could be heavy at times. High near 43. Southwest wind 14 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.

Tonight

Rain before 10pm, then snow, possibly mixed with rain. The rain and snow could be heavy at times. Low around 32. Breezy, with a west wind 25 to 28 mph, with gusts as high as 39 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

Tuesday

Snow. High near 38. West wind 6 to 16 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

Tuesday Night

Rain, possibly mixed with snow, becoming all rain after 10pm. The rain could be heavy at times. Low around 34. West wind 8 to 17 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 2 inches possible.

Wednesday

Rain, possibly mixed with snow. The rain could be heavy at times. High near 42. West wind 13 to 20 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

Wednesday Night

Rain, possibly mixed with snow. Low around 37. Chance of precipitation is 90%. Little or no snow accumulation expected.

Thursday

Rain, possibly mixed with snow. High near 41. Chance of precipitation is 80%. Little or no snow accumulation expected.

Thursday Night

Rain likely. Mostly cloudy, with a low around 39. Chance of precipitation is 70%.

Friday

A 40 percent chance of rain. Mostly cloudy, with a high near 43.

Friday Night

A chance of rain. Mostly cloudy, with a low around 37.

Saturday

A chance of rain. Partly sunny, with a high near 43.