National Weather Service United States Department of Commerce

Heavy Rain From the Central Plains to the Mid-Atlantic; Heat Wave Begins This Weekend

Strong to severe thunderstorms and heavy rain will impact portions of the central Plains into the Upper Midwest and the Mid-Atlantic through the weekend. A stretch of unusually hot and humid weather is expected across portions of the central U.S. and the Southeast beginning this weekend and continuing through next week. The heat may reach dangerous levels, particularly mid to late next week. Read More >

Click a location below for detailed forecast.

Last Map Update: Fri, Jul 18, 2025 at 7:34:39 pm EDT

 

Additional rounds of showers and thunderstorms are expected again this afternoon through roughly midnight. Portions of our Virginia far northeast Tennessee counties saw significant rainfall yesterday evening and overnight. With additional thunderstorm activity, and the potential for more heavy rains, expected over these same areas this afternoon and evening, a Flood Watch continues through this evening. Remember, Turn Around Don't Drown.
A typical summer pattern will continue through the weekend and next week, with hot and muggy afternoons and evenings. Scattered to numerous storms will continue each afternoon and evening. Highs in the 90s and heat index values near or above 100 can be expected in the Tennessee Valley.
A typical summer pattern will continue through the weekend and next week, with hot and muggy afternoons and evenings. Scattered to numerous storms will continue each afternoon and evening. Highs in the 90s and heat index values near or above 100 can be expected in the Tennessee Valley.
A typical summer pattern will continue through the weekend and next week, with hot and muggy afternoons and evenings. Scattered to numerous storms will continue each afternoon and evening. Highs in the 90s and heat index values near or above 100 can be expected in the Tennessee Valley.
Each observation point is apart of our COOP program (Cooperative Observer Program). Each site has a 24 hour observation period that ends and begins at 8 am local time. Each site records temperature, precipitation, and snowfall data. More information about the COOP program can be found here www.nws.noaa.gov/om/coop/ Data began being collected at: Cades Cover on 01/01/1999 || Mount LeConte on 07/01/1987 || Newfound Gap on 01/01/1991 || Sugarlands Visitor Center on 12/01/1921
Daily climate data (normals and records) for today for the sites plotted. The current normals period is 1991-2020.

 Current Weather Observations...
Location Time
(EDT)
Weather Vsby.
(SM)
Temp.
(ºF)
Dewpt.
(ºF)
Hum.
(%)
Wind
(mph)
Wind Chill / Heat Index
(ºF)
Pres.
(in)
Abingdon VA19:15Clear10787383VRB 1-30.16
Andrews-Murphy NC18:55Partly Cloudy10817477CALM-30.17
Chattanooga TN18:53Cumulonimbus Clouds, Lightning Observed10887055S 1293 [HI]30.09
Crossville TN19:17Lightning Observed10807687-30.16
Dalton GA19:15Thunder In The Vicinity10787897CALM-30.11
Knoxville TN (McGhee-Tyson)18:53Cumulonimbus Clouds, Towering Cumulus Clouds, Lightning Observed10886953WSW 1292 [HI]30.08
Middlesboro KY19:15Lightning Observed10817583NE 5-30.12
Monroe Cnty TN18:55Overcast10867774VRB 797 [HI]30.10
Morristown TN10:30VRB 5-30.10
Oak Ridge TN18:53Clear10887259CALM95 [HI]30.10
Tazewell Cnty VA19:15Partly Cloudy10737191CALM-30.20
Tri-Cities TN18:53Overcast10837577CALM-30.11
Wise VA19:15Lightning Observed10696894W 3-30.22
Greeneville, TN18:55Clear10867162W 591 [HI]30.11


Local Weather History For July 18th...
In 2012 storms hit for 4 consecutive days with damaging winds, large hail and flooding.

 

 

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