Heavy Rain From the Plains to the Northeast; Heat Wave Begins

Severe thunderstorms and heavy rainfall are likely across parts of the Northeast, portions of the northern and central Plains, and the Ohio Valley. Portions of northeast Missouri and central Illinois could experience locally significant flash flooding. Dangerously hot conditions are expected in the Central Plains, Lower and Middle Mississippi Valley, and Southeast. Read More >

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Last Map Update: Sun, Jul 20, 2025 at 9:00:21 pm EDT

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National Weather Service Atlanta/Peachtree City, GA

National Weather Service Greenville-Spartanburg, SC

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Heat Advisory

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Strong to Severe Storms

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Daily Climate

Scattered showers and thunderstorms will continue especially areas along and north of interstate 40. Localized flash flooding is possible.

Hot and muggy conditions with afternoon showers and thunderstorms will continue through Monday. The chance of rain will decrease starting Tuesday, but temperatures will rise, with highs in the 90s and heat index values near or above 100 through the week.

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 VA	20:15	Thunder In The Vicinity \ Lightning Observed	10	75	71	88	SSW 9	-	30.10
Andrews-Murphy NC	20:24	Partly Cloudy	10	79	73	84	CALM	-	30.10
Chattanooga TN	19:53	Clear	10	88	74	63	SW 9	97 [HI]	30.03
Crossville TN	19:53	Lightning Observed	10	81	74	79	WSW 6	-	30.09
Dalton GA	20:15	Overcast	9	82	82	100	CALM	96 [HI]	30.02
Knoxville TN (McGhee-Tyson)	19:53	Mostly Clear	10	85	74	69	ENE 3	92 [HI]	30.01
Middlesboro KY	20:15	Clear	10	83	76	79	WSW 3	-	30.05
Monroe Cnty TN	20:10	Clear	10	84	80	88	SSW 7	97 [HI]	30.03
Morristown TN	10:30						VRB 5	-	30.10
Oak Ridge TN	19:53	Partly Cloudy	10	85	80	85	CALM	99 [HI]	30.02
Tazewell Cnty VA	20:15	Thunder \ Lightning Observed	7	70	69	98	S 3	-	30.13
Tri-Cities TN	19:53	Overcast	10	78	71	79	SW 5	-	30.07
Wise VA	20:15	Thunder In The Vicinity \ Lightning Observed	10	77	69	78	WSW 5	-	30.13
Greeneville, TN	20:10	Partly Cloudy	10	75	71	88	CALM	-	30.07

Local Weather History For July 20th...

In 2008, 4 consecutive days of storms ravaged the area, considerable wind damage.


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Heavy Rain From the Plains to the Northeast; Heat Wave Begins

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