Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds from the Upper Midwest into the Northeast

A prolonged atmospheric river will continue to impact the Pacific Northwest into the Northern Rockies with heavy rainfall, areas of urban and river flooding, landslides, heavy mountain snow, and gusty winds into Thursday. A strong clipper system will bring the threat of heavy snow and high winds across the Upper Midwest/Great Lakes as well as portions of the interior Northeast and Appalachians. Read More >

Current conditions at

Shaw Air Force Base (KSSC)

Lat: 33.97°NLon: 80.48°WElev: 243ft.

Fair

31°F

-1°C

Humidity 93%
Wind Speed SW 3 mph
Barometer 30.08 in (1019.0 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Last update 10 Dec 12:55 am EST
Extended Forecast for

3 Miles SSE East Sumter SC

Lake Wind Advisory December 10, 01:00pm until December 11, 01:00am
Click here for hazard details and duration
Lake Wind Advisory
  • Overnight

    Overnight: Mostly clear, with a low around 28. Calm wind.

    Low: 28 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 56. Light southwest wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 23 mph.

    High: 56 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 35. West wind 6 to 9 mph, with gusts as high as 21 mph.

    Low: 35 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 50. West wind around 6 mph.

    High: 50 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 29. Calm wind.

    Low: 29 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 57.

    High: 57 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 37.

    Low: 37 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 28. Calm wind.
Wednesday
Sunny, with a high near 56. Light southwest wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 23 mph.
Wednesday Night
Mostly clear, with a low around 35. West wind 6 to 9 mph, with gusts as high as 21 mph.
Thursday
Sunny, with a high near 50. West wind around 6 mph.
Thursday Night
Mostly clear, with a low around 29. Calm wind.
Friday
Sunny, with a high near 57.
Friday Night
Mostly clear, with a low around 37.
Saturday
Sunny, with a high near 62.
Saturday Night
Mostly clear, with a low around 42.
Sunday
Mostly sunny, with a high near 60.
Sunday Night
Mostly clear, with a low around 24.
Monday
Sunny, with a high near 42.
Monday Night
Mostly clear, with a low around 25.
Tuesday
Mostly sunny, with a high near 50.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE East Sumter SC
 33.89°N 80.27°W (Elev. 144 ft)
12:17 am EST Dec 10, 2025
1am EST Dec 10, 2025-6pm EST Dec 16, 2025
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database