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	22°F (-6°C)
Visibility	10.00 mi
Last update	31 Dec 06:15 AM PST

More Information:

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

Extended Forecast for

Prosser WA

Air Stagnation Advisory December 31, 06:39am until January 1, 12:00pm

Click here for hazard details and duration

Air Stagnation Advisory

Air Stagnation Advisory December 31, 06:39am until January 1, 12:00pm
NOW until 12:00pm Thu
Air Stagnation Advisory
Today
High: 38 °F
Decreasing
Clouds
Tonight
Low: 23 °F
Increasing
Clouds
New Year's Day
High: 34 °F
Chance
Rain/Snow
then
Rain/Snow
Likely
Thursday Night
Low: 30 °F
Wintry Mix
Likely
Friday
High: 39 °F
Chance
Rain/Freezing
Rain then
Slight Chance
Rain
Friday Night
Low: 30 °F
Chance Rain
Saturday
High: 43 °F
Chance Rain
Saturday Night
Low: 33 °F
Chance Rain

Detailed Forecast

Today

Mostly cloudy, then gradually becoming sunny, with a high near 38. Calm wind.

Tonight

Increasing clouds, with a low around 23. Calm wind.

New Year's Day

Snow likely, possibly mixed with rain, mainly after 4pm. Snow level 1500 feet rising to 2900 feet in the afternoon. Cloudy, with a high near 34. Light and variable wind. Chance of precipitation is 60%. Little or no snow accumulation expected.

Thursday Night

Rain and snow likely, possibly mixed with freezing rain before 10pm, then rain likely, possibly mixed with freezing rain. Cloudy, with a low around 30. Calm wind. Chance of precipitation is 60%. Little or no snow accumulation expected.

Friday

A chance of rain or freezing rain before 10am, then a slight chance of rain. Mostly cloudy, with a high near 39. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 40%.

Friday Night

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

Saturday

A 50 percent chance of rain. Mostly cloudy, with a high near 43.

Saturday Night

A 30 percent chance of rain, mainly before 10pm. Mostly cloudy, with a low around 33.

Sunday

Mostly cloudy, with a high near 46.

Sunday Night

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

Monday

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