On the afternoon of April 8th, a weak upper level disturbance traveled over a ridge placed over the the TN and OH valleys. The wave was able to interact with the surface boundary and with sufficient daytime heating, was able to fire multiple supercell thunderstorms. The only threat from these storms was large hail. With the persistent instability and the boundary in place, the storms were able to continue to redevelop and train over the same areas repeatedly. Many of the cells displayed right turning characteristics. The long lived cells caused the event to last from 4pm in the afternoon until 1am in the morning and resulted in over 25 severe thunderstorm warnings.

Thunderstorm Wind in WOLFE, KENTUCKY
From 08-APR-11 23:20:00 to 08-APR-11 23:30:00 (EST-5)
Location: TORRENT
Magnitude: 52.00 EG
Reported by: Public

There were huge limbs and branches on highway 715.

Thunderstorm Wind in WOLFE, KENTUCKY
From 08-APR-11 23:20:00 to 08-APR-11 23:30:00 (EST-5)
Location: WHISMAN
Magnitude: 52.00 EG
Reported by: Post Office

There were huge limbs and branches on road.

Hail in PIKE, KENTUCKY
From 08-APR-11 18:02:00 to 08-APR-11 18:12:00 (EST-5)
Location: DORTON
Magnitude: 1.25 
Reported by: Emergency Manager

The hail was the size of golf balls on Dorton Creek road off of highway 23.

Hail in PIKE, KENTUCKY
From 08-APR-11 18:25:00 to 08-APR-11 18:35:00 (EST-5)
Location: TOOPERVILLE
Magnitude: 1.00 
Reported by: Public

The hail was the size of quarters.

Hail in MORGAN, KENTUCKY
From 08-APR-11 15:27:00 to 08-APR-11 15:37:00 (EST-5)
Location: BLAZE
Magnitude: 1.00 
Reported by: Trained Spotter

The hail was the size of quarters on highway 1022.

Hail in MORGAN, KENTUCKY
From 08-APR-11 15:45:00 to 08-APR-11 15:55:00 (EST-5)
Location: CROCKETT
Magnitude: 1.50 
Reported by: Trained Spotter

The hail was the size of a walnut.

Hail in FLOYD, KENTUCKY
From 08-APR-11 16:55:00 to 08-APR-11 17:05:00 (EST-5)
Location: MELVIN
Magnitude: 1.50 
Reported by: Broadcast Media

The hail was the size of walnuts.

Hail in POWELL, KENTUCKY
From 08-APR-11 18:10:00 to 08-APR-11 18:20:00 (EST-5)
Location: VAUGHNS MILL
Magnitude: 1.75 
Reported by: Trained Spotter

The hail was the size of golf balls and was falling on Happy Top road.

Hail in POWELL, KENTUCKY
From 08-APR-11 18:00:00 to 08-APR-11 18:10:00 (EST-5)
Location: CLAY CITY
Magnitude: 1.25 
Reported by: Trained Spotter

The hail was the size of half dollars.

Hail in POWELL, KENTUCKY
From 08-APR-11 18:05:00 to 08-APR-11 18:15:00 (EST-5)
Location: WALTERSVILLE
Magnitude: 1.00 
Reported by: Fire Department/Rescue

The hail was the size of quarters.

Hail in POWELL, KENTUCKY
From 08-APR-11 18:06:00 to 08-APR-11 18:16:00 (EST-5)
Location: STANTON
Magnitude: 1.25 
Reported by: Law Enforcement

The hail was the size of half dollars.

Hail in POWELL, KENTUCKY
From 08-APR-11 18:09:00 to 08-APR-11 18:19:00 (EST-5)
Location: STANTON ARPT
Magnitude: 1.00 
Reported by: NWS Employee

The hail was the size of quarters.

Hail in PIKE, KENTUCKY
From 08-APR-11 21:49:00 to 08-APR-11 21:59:00 (EST-5)
Location: LITTLE DIXIE
Magnitude: 1.00 
Reported by: Public

The hail was the size of quarters.

Hail in MAGOFFIN, KENTUCKY
From 08-APR-11 21:51:00 to 08-APR-11 22:01:00 (EST-5)
Location: ROYALTON
Magnitude: 1.00 
Reported by: Trained Spotter

The hail was the size of quarters.

Hail in PIKE, KENTUCKY
From 08-APR-11 22:08:00 to 08-APR-11 22:18:00 (EST-5)
Location: VIRGIE
Magnitude: 1.25 
Reported by: Trained Spotter

The hail was the size of half dollar coins.

Hail in WOLFE, KENTUCKY
From 08-APR-11 22:42:00 to 08-APR-11 22:52:00 (EST-5)
Location: VORTEX
Magnitude: 1.00 
Reported by: NWS Employee

The hail was the size of quarters.

Hail in POWELL, KENTUCKY
From 08-APR-11 18:30:00 to 08-APR-11 18:40:00 (EST-5)
Location: STANTON
Magnitude: 1.75 
Reported by: Public

The hail was the size of golf balls.

Hail in WOLFE, KENTUCKY
From 08-APR-11 18:52:00 to 08-APR-11 19:02:00 (EST-5)
Location: CAMPTON
Magnitude: 1.75 
Reported by: Public

The hail was the size of golf balls.

Hail in JOHNSON, KENTUCKY
From 08-APR-11 20:57:00 to 08-APR-11 21:07:00 (EST-5)
Location: PAINTSVILLE
Magnitude: 1.50 
Reported by: Trained Spotter

The hail was the size of walnuts.

Hail in PIKE, KENTUCKY
From 08-APR-11 22:59:00 to 08-APR-11 23:09:00 (EST-5)
Location: DORTON
Magnitude: 1.00 
Reported by: Public

Quarter sized hail was reported by the public.

Hail in MAGOFFIN, KENTUCKY
From 08-APR-11 21:37:00 to 08-APR-11 21:47:00 (EST-5)
Location: HENDRICKS
Magnitude: 1.00 
Reported by: NWS Employee

The hail was the size of nickels and quarters and were falling near the junction of routes 30 and 1090.