National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

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

Current conditions at

OROVILLE (OVLW1)

Lat: 48.96311°NLon: 119.49161°WElev: 1450.0ft.

NA

25°F

-4°C

Humidity 81%
Wind Speed W 1 MPH
Barometer NA
Dewpoint 20°F (-7°C)
Visibility NA
Last update 30 Dec 08:41 AM PST
Extended Forecast for

28 Miles NNE Mazama 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: 31 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 24. West wind around 9 mph.

    Low: 24 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 33. Southwest wind 6 to 9 mph.

    High: 33 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 20. Southwest wind around 8 mph.

    Low: 20 °F

    Partly Cloudy

  • New Year's Day

    New Year's Day: Mostly cloudy, with a high near 27. Southwest wind around 8 mph.

    High: 27 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 18. New snow accumulation of less than a half inch possible.

    Low: 18 °F

    Chance Snow

  • Friday

    Friday: A 50 percent chance of snow. Mostly cloudy, with a high near 24. New snow accumulation of less than a half inch possible.

    High: 24 °F

    Chance Snow

  • Friday Night

    Friday Night: Snow likely. Mostly cloudy, with a low around 21. Chance of precipitation is 70%.

    Low: 21 °F

    Snow Likely

Detailed Forecast

Today
Partly sunny, with a high near 31. Southwest wind 8 to 10 mph.
Tonight
Mostly cloudy, with a low around 24. West wind around 9 mph.
Wednesday
Partly sunny, with a high near 33. Southwest wind 6 to 9 mph.
Wednesday Night
Partly cloudy, with a low around 20. Southwest wind around 8 mph.
New Year's Day
Mostly cloudy, with a high near 27. Southwest wind around 8 mph.
Thursday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 18. New snow accumulation of less than a half inch possible.
Friday
A 50 percent chance of snow. Mostly cloudy, with a high near 24. New snow accumulation of less than a half inch possible.
Friday Night
Snow likely. Mostly cloudy, with a low around 21. Chance of precipitation is 70%.
Saturday
Snow likely. Mostly cloudy, with a high near 24. Chance of precipitation is 60%.
Saturday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 14.
Sunday
A 40 percent chance of snow. Mostly cloudy, with a high near 22.
Sunday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 14.
Monday
A 40 percent chance of snow. Mostly cloudy, with a high near 23.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
28 Miles NNE Mazama WA
 48.97°N 120.14°W (Elev. 6991 ft)
Last Update:
3:31 am PST Dec 30, 2025
Forecast Valid:
9am PST Dec 30, 2025-6pm PST Jan 5, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation