Snow Squalls May Impact New Year's Eve Travel from the Great Lakes to the Mid-Atlantic; Heavy Rain Returns to California

Lake effect snow will continue through Friday bringing significant snowfall to areas east to southeast of the Great Lakes. Snow squalls may impact New Year's Eve travel this evening and overnight across parts of the Great Lakes, Ohio Valley, Mid-Atlantic, and Upstate New York. Heavy rain will bring another flash flooding threat for southern California New Year's Eve into New Year's Day. Read More >

Hazardous Weather Conditions

Air Stagnation Advisory until January 1, 12:00 PM PST

Current conditions at

Sunnyside Municipal Airport (K1S5)

Lat: 46.3271°NLon: 119.9704°WElev: 768.0ft.

Clear

23°F

-5°C

Humidity	92%
Wind Speed	N 0 MPH
Barometer	30.31 in (1026.41 mb)
Dewpoint	21°F (-6°C)
Visibility	10.00 mi
Last update	31 Dec 05:15 AM PST

More Information:

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

Extended Forecast for

11 Miles SE Mattawa WA

Air Stagnation Advisory December 31, 05:32am until January 1, 12:00pm

Click here for hazard details and duration

Air Stagnation Advisory

Air Stagnation Advisory December 31, 05:32am until January 1, 12:00pm
NOW until 12:00pm Thu
Air Stagnation Advisory
Today
High: 40 °F
Partly Sunny
Tonight
Low: 24 °F
Increasing
Clouds
New Year's Day
High: 36 °F
Slight Chance
Rain/Snow
Thursday Night
Low: 30 °F
Chance
Rain/Freezing
Rain
Friday
High: 40 °F
Chance Rain
Friday Night
Low: 32 °F
Chance Rain
Saturday
High: 44 °F
Chance Rain
Saturday Night
Low: 34 °F
Chance Rain
then Mostly
Cloudy

Detailed Forecast

Today

Partly sunny, with a high near 40. Calm wind.

Tonight

Increasing clouds, with a low around 24. Calm wind.

New Year's Day

A slight chance of rain and snow after 10am. Snow level 1100 feet rising to 2400 feet in the afternoon. Mostly cloudy, with a high near 36. Light northeast wind. Chance of precipitation is 20%.

Thursday Night

A chance of rain or freezing rain before 1am, then a chance of rain. Cloudy, with a low around 30. Calm wind. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

Friday

A 30 percent chance of rain. Mostly cloudy, with a high near 40. Light north wind.

Friday Night

A 30 percent chance of rain. Mostly cloudy, with a low around 32.

Saturday

A 50 percent chance of rain. Mostly cloudy, with a high near 44.

Saturday Night

A 30 percent chance of rain before 10pm. Mostly cloudy, with a low around 34.

Sunday

Mostly cloudy, with a high near 47.

Sunday Night

A slight chance of rain. Mostly cloudy, with a low around 33.