Heavy Rainfall Continues in Hawaii; Severe Thunderstorms and Heavy Rainfall in the Plains and Southern Appalachians

Areas of gusty winds, heavy rain leading to flash flooding, and high surf continue across portions of Hawaii as Tropical Storm Lala continues to move away from the islands. Severe thunderstorms and heavy rainfall will shift into the southern Appalachians today. Strong to severe thunderstorms may produce large hail, scattered wind gusts, and heavy rain today across the northern and central Plains. Read More >

Current conditions at

Chattanooga, Lovell Field (KCHA)

Lat: 35.03°NLon: 85.2°WElev: 679ft.

Fair

98°F

37°C

Humidity 42%
Wind Speed SW 7 mph
Barometer 30.00 in (1014.8 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index106°F (41°C)
Last update 17 Aug 1:53 pm EDT
Extended Forecast for

3 Miles WNW McDonald TN

Heat Advisory August 17, 02:02pm until August 17, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 17, 02:02pm until August 17, 08:00pm

    NOW until 8:00pm Mon

    Heat Advisory

  • This Afternoon

    High: 95 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before midnight.  Partly cloudy, with a low around 73. West wind around 5 mph becoming calm.

    Low: 73 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: Mostly sunny and hot, with a high near 90. North wind around 5 mph.

    High: 90 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 68. North wind around 5 mph.

    Low: 68 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 93. North wind around 5 mph becoming calm.

    High: 93 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 72. Calm wind.

    Low: 72 °F

    Mostly Clear

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms, mainly after 2pm.  Mostly sunny and hot, with a high near 93. Calm wind becoming west around 5 mph.

    High: 93 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms before 8pm.  Partly cloudy, with a low around 72.

    Low: 72 °F

    Chance
    T-storms then
    Partly Cloudy

Detailed Forecast

This Afternoon
A 50 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 95. Heat index values as high as 100. West wind 5 to 10 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
A 30 percent chance of showers and thunderstorms, mainly before midnight. Partly cloudy, with a low around 73. West wind around 5 mph becoming calm.
Tuesday
Mostly sunny and hot, with a high near 90. North wind around 5 mph.
Tuesday Night
Mostly clear, with a low around 68. North wind around 5 mph.
Wednesday
Sunny and hot, with a high near 93. North wind around 5 mph becoming calm.
Wednesday Night
Mostly clear, with a low around 72. Calm wind.
Thursday
A 30 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny and hot, with a high near 93. Calm wind becoming west around 5 mph.
Thursday Night
A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 72.
Friday
A 50 percent chance of showers and thunderstorms after 2pm. Partly sunny and hot, with a high near 90.
Friday Night
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Mostly cloudy, with a low around 69.
Saturday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
Saturday Night
A chance of thunderstorms. Partly cloudy, with a low around 68. Chance of precipitation is 30%.
Sunday
Sunny, with a high near 89.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WNW McDonald TN
 35.13°N 85.02°W (Elev. 1198 ft)
1:41 pm EDT Aug 17, 2026
2pm EDT Aug 17, 2026-6pm EDT Aug 23, 2026
 
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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