National Weather Service United States Department of Commerce

Severe Thunderstorms in the Central Plains and Lower Missouri Valley; Heat Continues in the Southeast and Southwest

Severe thunderstorms capable of large hail and damaging wind gusts are forecast to impact the central Plains into the Lower Missouri Valley through this afternoon. Dangerous heat persists across the southern Plains, Southeast U.S. and Puerto Rico this week, and will return to the Southwest today. Read More >

Click a location below for detailed forecast.

Last Map Update: Tue, Aug 18, 2026 at 1:22:18 pm EDT

 

A few isolated showers and storms to come to an end overnight, with fog developing early in the morning. Drier weather is expected for Tuesday and Wednesday, and afternoon humidity will be lower both days. Rain chances to return on Thursday.
A few isolated showers and storms to come to an end overnight, with fog developing early in the morning. Drier weather is expected for Tuesday and Wednesday, and afternoon humidity will be lower both days. Rain chances to return on Thursday.
A few isolated showers and storms to come to an end overnight, with fog developing early in the morning. Drier weather is expected for Tuesday and Wednesday, and afternoon humidity will be lower both days. Rain chances to return on Thursday.
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

 Current Weather Observations...
Location Time
(EDT)
Weather Vsby.
(SM)
Temp.
(ºF)
Dewpt.
(ºF)
Hum.
(%)
Wind
(mph)
Wind Chill / Heat Index
(ºF)
Pres.
(in)
Abingdon VA12:55Partly Cloudy10806661W 8-30.06
Andrews-Murphy NC12:35Partly Cloudy10837065W 5-30.07
Chattanooga TN12:53Mostly Cloudy10886851W 592 [HI]30.03
Crossville TN12:53Mostly Cloudy10776464-30.11
Dalton GA12:55Mostly Clear10857778VRB 596 [HI]30.04
Knoxville TN (McGhee-Tyson)12:53Partly Cloudy10827271SW 6-30.03
Middlesboro KY12:35Mostly Cloudy10827067CALM-30.06
Monroe Cnty TN12:35Partly Cloudy10847779CALM94 [HI]30.04
Morristown TN12:55Mostly Cloudy9827783VRB 5-30.04
Oak Ridge TN12:53Partly Cloudy10857265VRB 391 [HI]30.04
Tazewell Cnty VA12:35Mostly Cloudy10746369NNW 7-30.11
Tri-Cities TN12:53Mostly Cloudy10806969W 8-30.04
Wise VA12:55Partly Cloudy10776465WNW 8-30.12
Greeneville, TN12:3510787178CALM-30.06


Local Weather History For August 18th...
Slow-moving storms continued for 2 more days in 2010 bringing more flooding.

 

 

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