Thunderstorms and Widespread Rainfall Across the Southern Plains

Isolated severe thunderstorms and widespread showers may produce flash flooding across the Southern Plains through Thursday. Numerous instances of flash flooding are expected in south-central Texas, including portions of the Hill Country; and an additional area across eastern Oklahoma into the Ozarks on Thursday. Heavy rainfall and mountain snow will return to southern California on Thursday. Read More >

Hazardous Weather Conditions

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Mostly Cloudy

57°F

14°C

Humidity 87%
Wind Speed Calm
Barometer 30.15 in (1020.2 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 19 Nov 11:53 pm EST
Extended Forecast for

4 Miles NNW Louisville TN

  • Overnight

    Overnight: Patchy fog.  Otherwise, mostly cloudy, with a low around 52. Calm wind.

    Low: 52 °F

    Patchy Fog

  • Thursday

    Thursday: Widespread fog before 10am.  Otherwise, mostly cloudy, with a high near 70. Calm wind.

    High: 70 °F

    Fog then
    Mostly Cloudy

  • Thursday Night

    Thursday Night: Showers likely before 1am, then a chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am.  Cloudy, with a low around 58. Calm wind becoming south around 5 mph.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 58 °F

    Showers
    Likely

  • Friday

    Friday: A 40 percent chance of showers, mainly after 1pm.  Mostly cloudy, with a high near 73. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 73 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm.  Low around 61. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.  Chance of precipitation is 80%.

    Low: 61 °F

    Showers

  • Saturday

    Saturday: A 50 percent chance of showers.  Partly sunny, with a high near 70. Southwest wind 5 to 10 mph becoming northwest in the afternoon.

    High: 70 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A 20 percent chance of showers.  Partly cloudy, with a low around 48. Northwest wind around 5 mph becoming calm  in the evening.

    Low: 48 °F

    Slight Chance
    Showers

  • Sunday

    Sunday: A 20 percent chance of showers.  Mostly sunny, with a high near 66.

    High: 66 °F

    Slight Chance
    Showers

  • Sunday Night

    Sunday Night: A 20 percent chance of showers.  Partly cloudy, with a low around 46.

    Low: 46 °F

    Slight Chance
    Showers

Detailed Forecast

Overnight
Patchy fog. Otherwise, mostly cloudy, with a low around 52. Calm wind.
Thursday
Widespread fog before 10am. Otherwise, mostly cloudy, with a high near 70. Calm wind.
Thursday Night
Showers likely before 1am, then a chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am. Cloudy, with a low around 58. Calm wind becoming south around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
A 40 percent chance of showers, mainly after 1pm. Mostly cloudy, with a high near 73. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Friday Night
Showers and possibly a thunderstorm. Low around 61. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.
Saturday
A 50 percent chance of showers. Partly sunny, with a high near 70. Southwest wind 5 to 10 mph becoming northwest in the afternoon.
Saturday Night
A 20 percent chance of showers. Partly cloudy, with a low around 48. Northwest wind around 5 mph becoming calm in the evening.
Sunday
A 20 percent chance of showers. Mostly sunny, with a high near 66.
Sunday Night
A 20 percent chance of showers. Partly cloudy, with a low around 46.
Monday
A 20 percent chance of showers. Partly sunny, with a high near 65.
Monday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 49.
Tuesday
A 50 percent chance of showers. Mostly cloudy, with a high near 65.
Tuesday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 52.
Wednesday
A 20 percent chance of showers. Partly sunny, with a high near 62.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNW Louisville TN
 35.88°N 84.06°W (Elev. 899 ft)
12:06 am EST Nov 20, 2025
12am EST Nov 20, 2025-6pm EST Nov 26, 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