National Weather Service United States Department of Commerce

Thunderstorms and Heavy Rain in the Mid-South; Heat Continues in the Southeast and Southwest

Severe thunderstorms and heavy rain are expected across portions of the mid-Mississippi Valley into the Ohio Valley and portions of Arizona. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that, when combined with oppressive dew points, little-to-no relief from the scorching daytime highs will be available. Read More >

Click a location below for detailed forecast.

Last Map Update: Wed, Aug 19, 2026 at 2:52:28 pm EDT

 

Rain and thunderstorm chances return on Thursday as a cold front sweeps across the region. A conditional severe weather threat exists Thursday afternoon dependent on if storms develop. If storms occur, damaging winds will be the primary severe concern. Drier, more comfortable late August weather will settle in for the weekend.

 Current Weather Observations...
Location Time
(EDT)
Weather Vsby.
(SM)
Temp.
(ºF)
Dewpt.
(ºF)
Hum.
(%)
Wind
(mph)
Wind Chill / Heat Index
(ºF)
Pres.
(in)
Abingdon VA14:15Clear10806050VRB 2-30.09
Andrews-Murphy NC14:15Clear10856245CALM-30.07
Chattanooga TN13:53Clear10896646VRB 392 [HI]30.04
Crossville TN13:53Clear10826352VRB 5-30.11
Dalton GA14:35Clear10896646N 892 [HI]30.03
Knoxville TN (McGhee-Tyson)13:53Mostly Cloudy8866549WSW 12-30.04
Middlesboro KY14:35Clear10866550NW 5-30.06
Monroe Cnty TN14:15Clear10866958CALM-30.05
Morristown TN14:35Clear8846858CALM-30.05
Oak Ridge TN13:53Mostly Clear10876751CALM-30.06
Tazewell Cnty VA05:55Fog1/46262100CALM-30.10
Tri-Cities TN13:53Partly Cloudy10856653SSW 6-30.07
Wise VA14:35Clear10786257CALM-30.13
Greeneville, TN14:1510826658VRB 5-30.06


Local Weather History For August 19th...
In 2011, storms hit on 2 straight days causing $30,000 wind damage and quarter-size hail.

 

 

Briefing Hydrology Past Weather Events Graphical Hazardous Weather Outlook for East Tennessee East Tennessee Observations
Decision Support Hydrology Past Weather Events GHWO Observations Gridded Forecast
Daily Climate for Middle Tennessee Local East Tennessee Climate Tornado Database Tropical Weather Information NOAA Weather Radio
IDSS Point Forecasts Daily Climate Local Climate Tornado Database Tropical Weather Radio
Daily Climate for Middle Tennessee Probabilistic Data for East Tennessee Virtual Tour of the NWS Morristown Office Skywarn Spotter Training for East Tennessee  
Being Prepared Estar Preparado Probabilistic Virtual Tour Spotter Training