Several days of heavy to torrential rains and gusty winds were experienced across eastern Kentucky from July 9th through the 12th. A strong surface low pressure remained parked across Illinois to our WNW, with a frontal boundary expanding eastward and through Kentucky, sinking just south of the state to start the day on the 9th. During the day on the 9th and the 10th, the front began lifting northward through eastern Kentucky as a warm front, becoming the center for convective development, and also allowing for much deeper warm air and moisture advection into the region. As the front slowly continued just north of the state on the 11th and 12th, Kentucky found itself in the warm and unstable sector of the system, with showers and thunderstorms developing, peaking in coverage and intensity during the afternoon hours.
Given the warm environment, storms were generally low centroid and moisture laden, exhibiting well above normal PWats, in the 2 to 2.5 inch range. Soundings also showed shallow inverted V signatures, indicative of steep low level lapse rates and the ability to easily mix down higher winds aloft. Pulsy scattered convection with heavy rain and high wind gusts were the main concerns. Locations where multiple storms moved over saw high water and some instances of flash flooding. Other locations experienced thunderstorm wind damage as stronger winds transferred to the surface, especially as the storms were beginning the dissipating phase.
An 850 jet SW to NE, storms that NW to SE oriented were bowing.

Thunderstorm Wind in BELL, KENTUCKY
From 10-JUL-21 18:51:00 to 10-JUL-21 18:51:00 (EST-5)
Location: KETTLE IS
Magnitude: 50.00 EG
Property damage: 0.10K
Crop damage: 0.00K
Reported by: 911 Call Center

A tree was knocked down by thunderstorm winds along Highway 221 in the community of Kettle Island.

Flash Flood in ESTILL, KENTUCKY
From 10-JUL-21 15:05:00 to 10-JUL-21 17:15:00 (EST-5)
Location: IRVINE
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Sweet Lick Road in Irvine had approximately 4 to 5 feet of water flowing across it.

Thunderstorm Wind in PIKE, KENTUCKY
From 10-JUL-21 14:45:00 to 10-JUL-21 14:45:00 (EST-5)
Location: SHELBIANA
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Law Enforcement

Multiple trees and power lines were reported down in the community of Shelbiana.

Thunderstorm Wind in MAGOFFIN, KENTUCKY
From 10-JUL-21 15:30:00 to 10-JUL-21 15:30:00 (EST-5)
Location: ELSIE
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A tree was blown down and onto Route 134 at U.S. 460 near Elsie.

Thunderstorm Wind in PULASKI, KENTUCKY
From 10-JUL-21 16:52:00 to 10-JUL-21 16:52:00 (EST-5)
Location: SLOANS VLY
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A tree was blown down along River Road near Sloans Valley.

Flash Flood in ESTILL, KENTUCKY
From 10-JUL-21 15:06:00 to 10-JUL-21 17:15:00 (EST-5)
Location: NORTH IRVINE
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Several inches of water were observed flowing across White Oak Road in Irvine.

Flash Flood in ESTILL, KENTUCKY
From 10-JUL-21 15:15:00 to 10-JUL-21 17:15:00 (EST-5)
Location: RAVENNA
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Broadway St in Irvine had several inches of water flowing across it.

Thunderstorm Wind in PIKE, KENTUCKY
From 10-JUL-21 15:00:00 to 10-JUL-21 15:00:00 (EST-5)
Location: MOUTHCARD
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Law Enforcement

Multiple trees and power lines were reported down in the community of Mouthcard.

Thunderstorm Wind in PULASKI, KENTUCKY
From 10-JUL-21 16:54:00 to 10-JUL-21 16:54:00 (EST-5)
Location: ALPINE
Magnitude: 55.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Multiple trees were blown down along Bauer Road.

Thunderstorm Wind in PULASKI, KENTUCKY
From 10-JUL-21 16:54:00 to 10-JUL-21 16:54:00 (EST-5)
Location: ALPINE
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A tree was blown down along Blue John Road near Alpine.

Flash Flood in ESTILL, KENTUCKY
From 10-JUL-21 15:15:00 to 10-JUL-21 17:15:00 (EST-5)
Location: IRVINE
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

The Dispatch Office in Irvine had water flowing into the building. At least 3 inches of water had accumulated in the buildings basement and had also entered some of the duct work in 2 of the buildings offices.

Thunderstorm Wind in PIKE, KENTUCKY
From 10-JUL-21 15:05:00 to 10-JUL-21 15:05:00 (EST-5)
Location: FEDSCREEK
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Law Enforcement

Multiple trees and power lines were reported down in the community of Fedscreek.

Thunderstorm Wind in MCCREARY, KENTUCKY
From 10-JUL-21 17:18:00 to 10-JUL-21 17:18:00 (EST-5)
Location: HONEYBEE
Magnitude: 55.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Multiple trees were blown down along KY Hwy 90. The trees took down powerlines.

Thunderstorm Wind in KNOX, KENTUCKY
From 10-JUL-21 17:50:00 to 10-JUL-21 17:50:00 (EST-5)
Location: GREEN ROAD
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A tree was blown down along north KY Route 11 near Green Road.

Flash Flood in PIKE, KENTUCKY
From 09-JUL-21 07:53:00 to 09-JUL-21 08:53:00 (EST-5)
Location: PIKEVILLE
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Public

A video that showed that flash flooding was occurring near the Pikeville Elementary School in Pikeville was posted to one of NWS Jackson KY's social media feeds.

Thunderstorm Wind in FLOYD, KENTUCKY
From 10-JUL-21 13:55:00 to 10-JUL-21 13:55:00 (EST-5)
Location: MARTIN
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Law Enforcement

Multiple trees and power lines were reported down in the community of Martin.

Thunderstorm Wind in KNOX, KENTUCKY
From 10-JUL-21 18:02:00 to 10-JUL-21 18:02:00 (EST-5)
Location: HEIDRICK
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A tree was blown down along north KY Route 11 near Heidrick.

Thunderstorm Wind in KNOX, KENTUCKY
From 10-JUL-21 18:07:00 to 10-JUL-21 18:07:00 (EST-5)
Location: SWANPOND
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A tree was blown down along south KY Route 11 near Swanpond.

Flash Flood in PIKE, KENTUCKY
From 09-JUL-21 07:55:00 to 09-JUL-21 08:55:00 (EST-5)
Location: PIKEVILLE
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Public

Flash flooding was reported at a few locations around downtown Pikeville.

Flood in FLOYD, KENTUCKY
From 09-JUL-21 07:37:00 to 09-JUL-21 08:37:00 (EST-5)
Location: GRETHEL
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Minor flooding of a structure occurred in Grethel.

Thunderstorm Wind in FLOYD, KENTUCKY
From 10-JUL-21 14:10:00 to 10-JUL-21 14:10:00 (EST-5)
Location: MARE CREEK
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Law Enforcement

Multiple trees and power lines were reported down in the community of Stanville.

Thunderstorm Wind in KNOX, KENTUCKY
From 10-JUL-21 18:25:00 to 10-JUL-21 18:25:00 (EST-5)
Location: WARREN
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A tree was blown down along KY Route 225 near Warren.

Flash Flood in FLOYD, KENTUCKY
From 10-JUL-21 15:00:00 to 10-JUL-21 16:38:00 (EST-5)
Location: ALLEN
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Public

Flash flooding was observed along KY1428 in the city of Allen. One lane of the road was impassable.

Thunderstorm Wind in OWSLEY, KENTUCKY
From 11-JUL-21 18:15:00 to 11-JUL-21 18:15:00 (EST-5)
Location: BLAKE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

A tree was blown down along Anglin Branch Road.

Thunderstorm Wind in OWSLEY, KENTUCKY
From 11-JUL-21 18:33:00 to 11-JUL-21 18:33:00 (EST-5)
Location: COWCREEK
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

A tree was blown down near Cowcreek.

Thunderstorm Wind in FLOYD, KENTUCKY
From 10-JUL-21 14:10:00 to 10-JUL-21 14:10:00 (EST-5)
Location: HAROLD
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Law Enforcement

Multiple trees and power lines were reported down in the community of Betsy Layne.

Flood in ESTILL, KENTUCKY
From 10-JUL-21 15:02:00 to 10-JUL-21 17:15:00 (EST-5)
Location: IRVINE
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Water of unknown depth was observed flowing across Hwy 89 at the Bypass and Winchester Rd in Irvine.

Flood in ESTILL, KENTUCKY
From 10-JUL-21 15:03:00 to 10-JUL-21 17:15:00 (EST-5)
Location: NORTH IRVINE
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

John Rawlings Road in Irvine was flooded.

Thunderstorm Wind in MARTIN, KENTUCKY
From 11-JUL-21 20:45:00 to 11-JUL-21 20:45:00 (EST-5)
Location: JOB
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

A tree was blown down on Highway 3 at mile marker 19 near Job.

Thunderstorm Wind in PIKE, KENTUCKY
From 10-JUL-21 15:00:00 to 10-JUL-21 15:00:00 (EST-5)
Location: PHELPS
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Law Enforcement

Multiple trees and power lines were reported down in the community of Phelps.

Flash Flood in ESTILL, KENTUCKY
From 10-JUL-21 15:03:00 to 10-JUL-21 17:15:00 (EST-5)
Location: UNION HALL
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Debris flows blocked roadways at the top of Chestnut Stand Road and Sweet Lick Road near Irvine.

Flash Flood in LEE, KENTUCKY
From 11-JUL-21 18:00:00 to 11-JUL-21 19:00:00 (EST-5)
Location: ST HELENS
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Department of Highways

Flashing flooding issues were reported along Blaines Branch just off of Hwy 52 past the intersection with Robinson Hollow Road. Roughly 2 feet of water was over the road and some of the black top was removed. The road had to be closed due to the flooding and damage to the road surface. A video was also shared with the NWS Jackson, KY weather office by the Lee County EM of a culvert being washed away.

Flash Flood in ESTILL, KENTUCKY
From 10-JUL-21 15:03:00 to 10-JUL-21 15:18:00 (EST-5)
Location: NORTH IRVINE
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Between roughly 403 and 418 pm, several homes along Geneva Ave in Irvine were damaged by flood waters. Several more homes had water flowing into them. A few water rescues were needed in this area as well.