Lala Impacting Hawaii; Severe Thunderstorm and Flash Flooding Risks; Excessive Heat

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 thunderstorm, heavy rainfall, and flash flooding threats continue from the Midwest to the Mid-Atlantic and across the central High Plains. Record heat continues for areas of the central/southern Plain into the Southeast Read More >

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

A Few Clouds

81°F

27°C

Humidity 74%
Wind Speed S 5 mph
Barometer 30.06 in (1016.6 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 16 Aug 10:53 pm EDT
Extended Forecast for

4 Miles N Walland TN

Heat Advisory August 16, 10:57pm until August 17, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 16, 10:57pm until August 17, 08:00pm

    NOW until 8:00pm Mon

    Heat Advisory

  • Tonight

    Low: 76 °F

    Mostly Clear

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms, mainly after 3pm.  Sunny and hot, with a high near 94. Heat index values as high as 102. Southwest wind 5 to 10 mph.

    High: 94 °F

    Sunny then
    Chance
    T-storms

  • Monday Night

    Monday Night: Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am.  Mostly cloudy, with a low around 73. Southwest wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 73 °F

    Showers
    Likely

  • Tuesday

    Tuesday: Mostly sunny and hot, with a high near 90. Heat index values as high as 96. Calm wind becoming northwest around 5 mph.

    High: 90 °F

    Hot

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 70. North wind around 5 mph becoming calm.

    Low: 70 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny and hot, with a high near 93. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 93 °F

    Hot

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers after 2am.  Partly cloudy, with a low around 72. Calm wind becoming southeast around 5 mph.

    Low: 72 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Thursday

    Thursday: A 50 percent chance of showers and thunderstorms, mainly after 2pm.  Mostly sunny and hot, with a high near 91.

    High: 91 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

Detailed Forecast

Tonight
Mostly clear, with a low around 76. Southwest wind around 5 mph.
Monday
A 40 percent chance of showers and thunderstorms, mainly after 3pm. Sunny and hot, with a high near 94. Heat index values as high as 102. Southwest wind 5 to 10 mph.
Monday Night
Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 73. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday
Mostly sunny and hot, with a high near 90. Heat index values as high as 96. Calm wind becoming northwest around 5 mph.
Tuesday Night
Partly cloudy, with a low around 70. North wind around 5 mph becoming calm.
Wednesday
Sunny and hot, with a high near 93. Calm wind becoming northwest around 5 mph in the afternoon.
Wednesday Night
A 20 percent chance of showers after 2am. Partly cloudy, with a low around 72. Calm wind becoming southeast around 5 mph.
Thursday
A 50 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny and hot, with a high near 91.
Thursday Night
A 30 percent chance of showers and thunderstorms, mainly before 2am. Mostly cloudy, with a low around 70.
Friday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 88. Chance of precipitation is 60%.
Friday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 68. Chance of precipitation is 60%.
Saturday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 87.
Saturday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 67.
Sunday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles N Walland TN
 35.79°N 83.82°W (Elev. 1001 ft)
7:06 pm EDT Aug 16, 2026
10pm EDT Aug 16, 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