Severe Thunderstorms in the Southern Plains; Heavy to Excessive Rainfall in South Central Texas

Widespread rain may produce flash flooding across the Southern Plains into the Ozarks today. Numerous instances of flash flooding are expected in south-central Texas, including the Hill Country. There will also be a risk of isolated severe thunderstorms across the southern Plains today, where an instance or two of severe wind, hail, or a brief tornado may occur. Read More >

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Rain Fog/Mist

63°F

17°C

Humidity 97%
Wind Speed NE 6 mph
Barometer 30.07 in (1018.0 mb)
Dewpoint 62°F (17°C)
Visibility 4.00 mi
Last update 20 Nov 6:53 pm EST
Extended Forecast for

3 Miles SSE Tallassee TN

  • Tonight

    Tonight: Showers likely, mainly between 8pm and 2am.  Cloudy, with a low around 60. Calm wind becoming southwest around 5 mph after midnight.  Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 60 °F

    Showers
    Likely

  • Friday

    Friday: A chance of showers before 11am, then a chance of showers after 3pm.  Mostly cloudy, with a high near 72. South wind around 5 mph.  Chance of precipitation is 30%.

    High: 72 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Showers and thunderstorms likely before 1am, then showers between 1am and 4am, then showers and possibly a thunderstorm after 4am.  Low around 59. South wind around 10 mph becoming southwest after midnight. Winds could gust as high as 25 mph.  Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 59 °F

    Showers
    Likely then
    Showers

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm.  Mostly cloudy, with a high near 68. Southwest wind 5 to 10 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.  Chance of precipitation is 60%.

    High: 68 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 45. North wind around 5 mph.

    Low: 45 °F

    Mostly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 64. Calm wind becoming north around 5 mph.

    High: 64 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 43. Calm wind becoming southeast around 5 mph after midnight.

    Low: 43 °F

    Mostly Clear

  • Monday

    Monday: Partly sunny, with a high near 66.

    High: 66 °F

    Partly Sunny

  • Monday Night

    Monday Night: A 40 percent chance of showers after 1am.  Mostly cloudy, with a low around 51.

    Low: 51 °F

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Tonight
Showers likely, mainly between 8pm and 2am. Cloudy, with a low around 60. Calm wind becoming southwest around 5 mph after midnight. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
A chance of showers before 11am, then a chance of showers after 3pm. Mostly cloudy, with a high near 72. South wind around 5 mph. Chance of precipitation is 30%.
Friday Night
Showers and thunderstorms likely before 1am, then showers between 1am and 4am, then showers and possibly a thunderstorm after 4am. Low around 59. South wind around 10 mph becoming southwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 68. Southwest wind 5 to 10 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 60%.
Saturday Night
Mostly cloudy, with a low around 45. North wind around 5 mph.
Sunday
Sunny, with a high near 64. Calm wind becoming north around 5 mph.
Sunday Night
Mostly clear, with a low around 43. Calm wind becoming southeast around 5 mph after midnight.
Monday
Partly sunny, with a high near 66.
Monday Night
A 40 percent chance of showers after 1am. Mostly cloudy, with a low around 51.
Tuesday
Showers. High near 63. Chance of precipitation is 80%.
Tuesday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 53. Chance of precipitation is 70%.
Wednesday
A 30 percent chance of showers. Mostly cloudy, with a high near 62.
Wednesday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 36.
Thanksgiving Day
Mostly sunny, with a high near 51.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Tallassee TN
 35.51°N 83.93°W (Elev. 1939 ft)
6:06 pm EST Nov 20, 2025
7pm EST Nov 20, 2025-6pm EST Nov 27, 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