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

7 Miles NNW Roslyn 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: 46 °F
Heavy Rain
Tonight
Low: 34 °F
Heavy Rain
then
Rain/Snow
Tuesday
High: 39 °F
Rain/Snow
Tuesday Night
Low: 35 °F
Rain/Snow
then Heavy
Rain
Wednesday
High: 47 °F
Heavy Rain
Wednesday Night
Low: 40 °F
Rain/Snow
Thursday
High: 45 °F
Rain
Thursday Night
Low: 40 °F
Rain Likely
then Chance
Rain/Snow

Detailed Forecast

This Afternoon

Rain. The rain could be heavy at times. High near 46. Southwest wind around 10 mph, with gusts as high as 28 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 34. Southwest wind 10 to 13 mph becoming northwest after midnight. Winds could gust as high as 38 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

Tuesday

Rain and snow. High near 39. West wind 5 to 8 mph becoming light and variable in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

Tuesday Night

Rain, possibly mixed with snow, becoming all rain after 10pm. The rain could be heavy at times. Low around 35. Light and variable wind becoming west 5 to 7 mph in the evening. Winds could gust as high as 22 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

Wednesday

Rain. The rain could be heavy at times. High near 47. West wind around 10 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.

Wednesday Night

Rain before 10pm, then rain, possibly mixed with snow between 10pm and 1am, then rain after 1am. Low around 40. Chance of precipitation is 90%. Little or no snow accumulation expected.

Thursday

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

Thursday Night

Rain likely before 4am, then a chance of rain and snow. Mostly cloudy, with a low around 40. Chance of precipitation is 60%.

Friday

A chance of rain and snow before 7am, then a chance of rain. Mostly cloudy, with a high near 47. Chance of precipitation is 40%.

Friday Night

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

Saturday

A chance of rain. Partly sunny, with a high near 47.

Saturday Night

Rain likely. Mostly cloudy, with a low around 37.