Severe Thunderstorms in the Midwest and Arizona; Heat Continues in the Southeast and Southwest

Thunderstorms, some severe, may lead to scattered instances of flash flooding across the Midwest and Ohio Valley and southern Arizona. The threat will shift to the Mid-Atlantic coast on Thursday. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that little-to-no relief from the scorching daytime highs will be available. Read More >

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Last Map Update: Thu, Aug 20, 2026 at 4:44:48 am EDT

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National Weather Service Atlanta/Peachtree City, GA

National Weather Service Greenville-Spartanburg, SC

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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.

Rain chances return today, with several waves of showers and thunderstorms possible through tomorrow. Temperatures will be close to normal through the weekend.

Rain chances return today, with several waves of showers and thunderstorms possible through tomorrow. Temperatures will be close to normal through the weekend.

Rain chances return today, with several waves of showers and thunderstorms possible through tomorrow. Temperatures will be close to normal through 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 VA	04:35	Clear	10	66	64	93	E 5	-	30.04
Andrews-Murphy NC	04:15	Clear	10	68	66	93	CALM	-	30.05
Chattanooga TN	03:53	Clear	10	77	70	78	CALM	-	29.96
Crossville TN	03:53	Clear	10	72	66	81	W 5	-	30.03
Dalton GA	04:35	Partly Cloudy	9	71	71	100	CALM	-	29.99
Knoxville TN (McGhee-Tyson)	03:53	Mostly Cloudy	10	73	69	87	CALM	-	29.97
Middlesboro KY	04:35	Overcast	10	68	68	98	CALM	-	30.00
Monroe Cnty TN	04:15	Clear	10	71	71	100	CALM	-	29.97
Morristown TN	04:35	Partly Cloudy	9	69	69	100	CALM	-	29.99
Oak Ridge TN	03:53	Clear	10	73	70	90	W 3	-	29.97
Tazewell Cnty VA	03:15	Clear	10	70	61	73	SSE 5	-	30.06
Tri-Cities TN	03:53	Mostly Clear	8	66	66	100	CALM	-	30.00
Wise VA	04:35	Mostly Cloudy	10	66	64	93	SW 5	-	30.08
Greeneville, TN	04:15		10	69	68	94	CALM	-	30.00

Local Weather History For August 20th...

Storms hit in 2014 for a 2 day period producing wind damage as well as quarter size hail.


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Severe Thunderstorms in the Midwest and Arizona; Heat Continues in the Southeast and Southwest

NWS Morristown