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

Current conditions at

Stampede Pass (KSMP)

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

Overcast

37°F

3°C

Humidity	100%
Wind Speed	WSW 8 MPH
Barometer	30.08 in (1018.63 mb)
Dewpoint	37°F (3°C)
Visibility	9.00 mi
Wind Chill	31°F (-1°C)
Last update	08 Dec 03:20 AM PST

More Information:

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

Extended Forecast for

8 Miles NE Snoqualmie Pass WA

Flood Watch December 8, 07:00am until December 12, 07:00am

Click here for hazard details and duration

Flood Watch

Overnight
Low: 30 °F
Snow Likely
Monday
High: 37 °F
Rain/Snow
Monday Night
Low: 27 °F
Rain/Snow and
Breezy
Tuesday
High: 35 °F
Heavy Snow
Tuesday Night
Low: 30 °F
Rain/Snow
Wednesday
High: 37 °F
Rain/Snow
Wednesday Night
Low: 34 °F
Rain/Snow
Thursday
High: 36 °F
Rain/Snow
Thursday Night
Low: 34 °F
Rain/Snow

Detailed Forecast

Overnight

Snow likely, mainly before 4am. Cloudy, with a low around 30. West wind around 18 mph, with gusts as high as 34 mph. Chance of precipitation is 70%. Total nighttime snow accumulation of 1 to 3 inches possible.

Monday

A chance of snow before 7am, then rain, possibly mixed with snow between 7am and 1pm, then rain after 1pm. The rain could be heavy at times. High near 37. West wind 16 to 21 mph, with gusts as high as 37 mph. Chance of precipitation is 100%. New snow accumulation of around an inch possible.

Monday Night

Rain before 10pm, then rain and snow between 10pm and 1am, then snow after 1am. The rain and snow could be heavy at times. Low around 27. Breezy, with a west wind 23 to 26 mph, with gusts as high as 55 mph. Chance of precipitation is 100%. New snow accumulation of 4 to 8 inches possible.

Tuesday

Snow. The snow could be heavy at times. High near 35. West wind 7 to 15 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

Tuesday Night

Rain, possibly mixed with snow. The rain and snow could be heavy at times. Low around 30. West wind 10 to 18 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.

Wednesday

Rain and snow. The rain could be heavy at times. High near 37. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.

Wednesday Night

Rain, possibly mixed with snow. The rain could be heavy at times. Low around 34. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

Thursday

Rain, possibly mixed with snow. High near 36. Chance of precipitation is 90%.

Thursday Night

Rain, possibly mixed with snow, becoming all rain after 1am. Low around 34. Chance of precipitation is 80%.

Friday

A chance of rain. Mostly cloudy, with a high near 37.

Friday Night

A chance of rain. Mostly cloudy, with a low around 32.

Saturday

Rain and snow likely. Partly sunny, with a high near 37.

Saturday Night

Rain and snow. Mostly cloudy, with a low around 30.