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

Severe Thunderstorms and Heavy Rainfall Today from the Central Plains into the Tennessee Valley

Severe thunderstorms capable of damaging winds will be possible from the Ozark Plateau east into portions of the Southeast today. Rounds of heavy thunderstorms ahead of a slow moving front will continue locally heavy rainfall and scattered flash flooding potential from the Ozarks to the Ohio and Tennessee Valleys today. Read More >

Hazardous Weather Conditions

Current conditions at

Chattanooga, Lovell Field (KCHA)

Lat: 35.03°NLon: 85.2°WElev: 679ft.

Mostly Cloudy

76°F

24°C

Humidity 94%
Wind Speed SW 6 mph
Barometer 30.07 in (1017.5 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index76°F (24°C)
Last update 12 Jul 1:53 am EDT
Extended Forecast for

Harrison TN

Flood Watch July 12, 02:10am until July 13, 02:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch July 12, 02:10am until July 13, 02:00am

    NOW until 2:00am Mon

    Flood Watch

  • Overnight

    Low: 73 °F

    Chance
    Showers

  • Sunday

    Sunday: Showers and thunderstorms likely, mainly after 2pm. Mostly cloudy, with a high near 85. South wind 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.

    High: 85 °F

    Chance
    Showers then
    T-storms
    Likely

  • Sunday Night

    Sunday Night: Showers and thunderstorms before 2am, then a chance of showers. Low around 71. South wind around 5 mph becoming calm. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 71 °F

    T-storms then
    Chance
    Showers

  • Monday

    Monday: Showers likely, then showers and possibly a thunderstorm after 8am. High near 82. Southeast wind around 5 mph becoming northeast in the morning. Chance of precipitation is 90%.

    High: 82 °F

    Showers
    Likely then
    T-storms

  • Monday Night

    Monday Night: Showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Low around 71. East wind around 5 mph becoming calm. Chance of precipitation is 80%.

    Low: 71 °F

    T-storms then
    Chance
    Showers

  • Tuesday

    Tuesday: A slight chance of showers, then showers and thunderstorms likely after 11am. Partly sunny, with a high near 85. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 70%.

    High: 85 °F

    Slight Chance
    T-storms then
    T-storms
    Likely

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 72. Calm wind. Chance of precipitation is 60%.

    Low: 72 °F

    T-storms
    Likely then
    Slight Chance
    T-storms

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88.

    High: 88 °F

    Partly Sunny
    then Chance
    T-storms

Detailed Forecast

Overnight
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 73. Calm wind. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
Showers and thunderstorms likely, mainly after 2pm. Mostly cloudy, with a high near 85. South wind 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.
Sunday Night
Showers and thunderstorms before 2am, then a chance of showers. Low around 71. South wind around 5 mph becoming calm. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
Showers likely, then showers and possibly a thunderstorm after 8am. High near 82. Southeast wind around 5 mph becoming northeast in the morning. Chance of precipitation is 90%.
Monday Night
Showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Low around 71. East wind around 5 mph becoming calm. Chance of precipitation is 80%.
Tuesday
A slight chance of showers, then showers and thunderstorms likely after 11am. Partly sunny, with a high near 85. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 70%.
Tuesday Night
Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 72. Calm wind. Chance of precipitation is 60%.
Wednesday
A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88.
Wednesday Night
A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 73.
Thursday
A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 90.
Thursday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74.
Friday
A 40 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 90.
Friday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74.
Saturday
A 30 percent chance of showers and thunderstorms. Sunny and hot, with a high near 90.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Harrison TN
 35.11°N 85.13°W (Elev. 797 ft)
Last Update:
1:06 am EDT Jul 12, 2026
Forecast Valid:
2am EDT Jul 12, 2026-6pm EDT Jul 18, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation