Heavy Lake Effect Snow Downwind of Lakes Erie and Ontario; Fire Weather Concerns in the Southern Plains and Southeast

A multi-day heavy lake effect snow event is expected downwind of Lakes Erie and Ontario through New Year's Day. There is increasing confidence in snow squalls causing bursts of snow & gusty winds on New Year's Eve. Elevated fire weather conditions will continue today over parts of the Southern Plains and across much of the Southeast U.S. Read More >

Hazardous Weather Conditions

Air Stagnation Advisory in effect from December 29, 12:03 PM PST 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	30.54 in (1034.2 mb)
Dewpoint	21°F (-6°C)
Visibility	10.00 mi
Last update	30 Dec 06:55 AM PST

More Information:

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

Extended Forecast for

Prosser WA

Air Stagnation Advisory until January 1, 12:00pm

Click here for hazard details and duration

Air Stagnation Advisory

Air Stagnation Advisory until January 1, 12:00pm
NOW until 12:00pm Thu
Air Stagnation Advisory
Today
High: 40 °F
Mostly Sunny
Tonight
Low: 23 °F
Mostly Clear
Wednesday
High: 35 °F
Partly Sunny
Wednesday Night
Low: 24 °F
Mostly Cloudy
New Year's Day
High: 35 °F
Slight Chance
Rain/Snow
Thursday Night
Low: 28 °F
Chance
Rain/Snow
then Chance
Rain
Friday
High: 39 °F
Chance Rain
Friday Night
Low: 31 °F
Chance Rain

Detailed Forecast

Today

Mostly sunny, with a high near 40. West wind 3 to 5 mph.

Tonight

Mostly clear, with a low around 23. Light west wind.

Wednesday

Partly sunny, with a high near 35. Light and variable wind.

Wednesday Night

Mostly cloudy, with a low around 24. Calm wind.

New Year's Day

A slight chance of rain and snow before 4pm, then a slight chance of rain. Cloudy, with a high near 35. Light north wind. Chance of precipitation is 20%.

Thursday Night

A chance of rain before 7pm, then a chance of rain and snow between 7pm and 10pm, then a chance of rain after 10pm. Cloudy, with a low around 28. Chance of precipitation is 50%. Little or no snow accumulation expected.

Friday

A 40 percent chance of rain. Mostly cloudy, with a high near 39.

Friday Night

A 50 percent chance of rain. Mostly cloudy, with a low around 31.

Saturday

A 30 percent chance of rain, mainly before 10am. Partly sunny, with a high near 46.

Saturday Night

A slight chance of rain before 10pm. Mostly cloudy, with a low around 32.

Sunday

Partly sunny, with a high near 45.

Sunday Night

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