Severe Thunderstorms and Flooding from the Southern Plains to the Great Lakes; Record Heat in the East

Widely scattered severe thunderstorms may produce damaging winds, hail, and flash flooding from the southern Plains into the lower Great Lakes. Elevated to locally critical fire weather conditions will persist across portions of the Southwest and Southern High Plains due to gusty winds and dry conditions. An early-season heatwave will challenge temperature records across the eastern U.S.. Read More >

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Mostly Cloudy

84°F

29°C

Humidity 46%
Wind Speed W 14 mph
Barometer 30.23 in (1022.3 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 19 May 11:53 am EDT
Extended Forecast for

4 Miles ESE Karns TN

  • This Afternoon

    This Afternoon: Mostly sunny and hot, with a high near 90. Southwest wind around 5 mph.

    High: 90 °F

    Hot

  • Tonight

    Tonight: Partly cloudy, with a low around 67. Southwest wind around 5 mph becoming calm  after midnight.

    Low: 67 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Showers and thunderstorms likely, mainly before 4pm.  Partly sunny, with a high near 88. Light west wind increasing to 5 to 10 mph in the afternoon.  Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 88 °F

    Mostly Sunny
    then Showers
    Likely

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am.  Mostly cloudy, with a low around 66. West wind around 5 mph becoming calm.  Chance of precipitation is 40%.

    Low: 66 °F

    Chance
    T-storms then
    Chance
    Showers

  • Thursday

    Thursday: A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers and possibly a thunderstorm after 2pm.  High near 85. Calm wind becoming northwest around 5 mph.  Chance of precipitation is 90%.

    High: 85 °F

    Chance
    Showers then
    Showers

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm before 11pm, then showers likely.  Low around 65. Northeast wind around 5 mph becoming calm.  Chance of precipitation is 80%.

    Low: 65 °F

    Showers

  • Friday

    Friday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8am.  High near 84. Light south wind increasing to 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.  Chance of precipitation is 80%.

    High: 84 °F

    Showers

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm.  Low around 66. Chance of precipitation is 80%.

    Low: 66 °F

    Showers

  • Saturday

    Saturday: Showers, with thunderstorms also possible after 8am.  High near 82. Chance of precipitation is 80%.

    High: 82 °F

    Showers

Detailed Forecast

This Afternoon
Mostly sunny and hot, with a high near 90. Southwest wind around 5 mph.
Tonight
Partly cloudy, with a low around 67. Southwest wind around 5 mph becoming calm after midnight.
Wednesday
Showers and thunderstorms likely, mainly before 4pm. Partly sunny, with a high near 88. Light west wind increasing to 5 to 10 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 66. West wind around 5 mph becoming calm. Chance of precipitation is 40%.
Thursday
A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 85. Calm wind becoming northwest around 5 mph. Chance of precipitation is 90%.
Thursday Night
Showers and possibly a thunderstorm before 11pm, then showers likely. Low around 65. Northeast wind around 5 mph becoming calm. Chance of precipitation is 80%.
Friday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8am. High near 84. Light south wind increasing to 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 80%.
Friday Night
Showers and possibly a thunderstorm. Low around 66. Chance of precipitation is 80%.
Saturday
Showers, with thunderstorms also possible after 8am. High near 82. Chance of precipitation is 80%.
Saturday Night
Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.
Sunday
Showers and thunderstorms. High near 83. Chance of precipitation is 80%.
Sunday Night
Showers and thunderstorms. Low around 65. Chance of precipitation is 80%.
Memorial Day
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 84. Chance of precipitation is 70%.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ESE Karns TN
 35.94°N 84.05°W (Elev. 974 ft)
7:06 am EDT May 19, 2026
12pm EDT May 19, 2026-6pm EDT May 25, 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