Severe Thunderstorm Threat From the Central Plains to the Northeast; Extreme HeatRisk for the East Coast

Strong to severe thunderstorms are possible from the central Plains to the Northeast through this evening. Widespread damaging winds are the primary threat but hail and a tornado or two is also possible. Extremely dangerous heat continues across the Eastern U.S. Warm overnight low temperatures will provide little to no relief. Read More >

The first week of the month was generally dry with seasonable temperatures. Though we have had roughly normal precipitation in 2021 as a whole, by August 10 we had dried out enough to introduce some areas of D0 (abnormally dry) on the U.S. Drought Monitor northeast of Louisville and in the Barren River Lake region.

From the 9th to the 19th we entered a wetter pattern and much of the month's rain fell during this time. Severe weather was sparse this month, but a few thunderstorms did manage to produce some damaging wind gusts during this period.

After another relatively dry period, the month ended on a wet note as the remnants of Hurricane Ida combined with a cold front to bring us thunderstorms on the 30th and rain on the 31st. Fortunately there was very little flooding due to dry ground and plenty of green vegetation. The most significant flooding took place on the 30th, well ahead of Ida, in Dubois, Orange, and Clark counties of southern Indiana. The gymnasium flooded at northeast Dubois Intermediate School.

	Average Temperature	Departure from Normal	Precipitation	Departure from Normal
Bowling Green	80.0°	+1.5°	5.40"	+1.51"
Frankfort	77.6°	+1.5°	8.92"	+5.77"
Lexington	75.6°	-0.1°	7.50"	+3.79"
Louisville Ali	80.9°	+2.0°	3.27"	-0.44"
Louisville Bowman	79.3°	+1.7°	3.86"	+0.33"

Records

11th: Warm low of 81° at Louisville
13th: Warm low of 75° at Bowling Green
19th: Wettest August day on record at Frankfort, 3.97"
29th: Warm low of 72° at Frankfort
31st: Rainfall of 2.11" at Bowling Green, rainfall of 2.21" at Frankfort

Wettest August on record at Frankfort
6th wettest August on record at Lexington

Shepherdsville, KY August 13, 2021