A large area of thunderstorms across Central Kentucky and Middle Tennessee produced an outflow boundary which moved into Northeast Tennessee and Southwest Virginia. Damaging winds resulted in this region due to relatively dry air in place at the surface which intensified thunderstorm downdrafts.

Thunderstorm Wind in GREENE, TENNESSEE
From 22-MAY-11 17:52:00 to 22-MAY-11 17:52:00 (EST-5)
Location: CANEY BRANCH
Magnitude: 50.00 EG
Reported by: Law Enforcement

Approximately twenty trees were reported down along Highway 321.

Thunderstorm Wind in SULLIVAN, TENNESSEE
From 22-MAY-11 18:25:00 to 22-MAY-11 18:25:00 (EST-5)
Location: FORDTOWN
Magnitude: 55.00 EG
Reported by: Amateur Radio

One tree along with several large limbs and power lines were reported down near 1905 Jackson Hollow Road in Kingsport.

Thunderstorm Wind in SULLIVAN, TENNESSEE
From 22-MAY-11 18:28:00 to 22-MAY-11 18:28:00 (EST-5)
Location: BORING
Magnitude: 52.00 MG
Reported by: ASOS

A 52 knot wind gust was measured at the Tri-Cities Regional Airport.

Thunderstorm Wind in RHEA, TENNESSEE
From 22-MAY-11 15:30:00 to 22-MAY-11 15:30:00 (EST-5)
Location: MORGANTOWN
Magnitude: 55.00 EG
Reported by: Law Enforcement

Multiple trees were reported down in Dayton.

Thunderstorm Wind in MEIGS, TENNESSEE
From 22-MAY-11 15:38:00 to 22-MAY-11 15:38:00 (EST-5)
Location: CALICO
Magnitude: 50.00 EG
Reported by: Law Enforcement

A few trees and a power line was reported down.

Thunderstorm Wind in LOUDON, TENNESSEE
From 22-MAY-11 16:02:00 to 22-MAY-11 16:02:00 (EST-5)
Location: EATON XRD
Magnitude: 55.00 EG
Reported by: Law Enforcement

One tree was reported down at the intersection of Cardwell Road and Hines Valley Road.

Thunderstorm Wind in LOUDON, TENNESSEE
From 22-MAY-11 16:11:00 to 22-MAY-11 16:11:00 (EST-5)
Location: EATON XRD
Magnitude: 55.00 EG
Reported by: Law Enforcement

One tree was reported down on Town Creek Road.

Thunderstorm Wind in ANDERSON, TENNESSEE
From 22-MAY-11 16:18:00 to 22-MAY-11 16:18:00 (EST-5)
Location: LEINART
Magnitude: 55.00 EG
Reported by: Law Enforcement

Numerous trees were reported down across much of the northern third of the county.

Thunderstorm Wind in KNOX, TENNESSEE
From 22-MAY-11 16:35:00 to 22-MAY-11 16:35:00 (EST-5)
Location: BEVERLY
Magnitude: 50.00 EG
Reported by: Trained Spotter

Twelve trees were reported down in the Gibbs community of Knoxville.

Thunderstorm Wind in BLOUNT, TENNESSEE
From 22-MAY-11 16:40:00 to 22-MAY-11 16:40:00 (EST-5)
Location: TOWNSEND
Magnitude: 55.00 EG
Reported by: Law Enforcement

A few trees and power lines were reported down in the vicinity of Townsend.

Thunderstorm Wind in GRAINGER, TENNESSEE
From 22-MAY-11 16:55:00 to 22-MAY-11 16:55:00 (EST-5)
Location: RUTLEDGE
Magnitude: 55.00 MG
Reported by: Trained Spotter

A storm spotter measured a 63 mph wind gust in Rutledge.

Thunderstorm Wind in BLOUNT, TENNESSEE
From 22-MAY-11 17:10:00 to 22-MAY-11 17:10:00 (EST-5)
Location: TOWNSEND
Magnitude: 55.00 EG
Reported by: Law Enforcement

Several trees and power lines were reported down in the vicinity of Townsend.

Thunderstorm Wind in COCKE, TENNESSEE
From 22-MAY-11 17:35:00 to 22-MAY-11 17:35:00 (EST-5)
Location: CLEVENGER
Magnitude: 50.00 EG
Reported by: Law Enforcement

One tree was reported down on the eastbound lane of I-40 near mile marker 430.

Thunderstorm Wind in COCKE, TENNESSEE
From 22-MAY-11 17:40:00 to 22-MAY-11 17:40:00 (EST-5)
Location: SARDIS
Magnitude: 55.00 EG
Reported by: Law Enforcement

Two trees were reported down on the Cosby Highway - Highway 32/321.

Hail in SULLIVAN, TENNESSEE
From 22-MAY-11 18:35:00 to 22-MAY-11 18:35:00 (EST-5)
Location: ROCK SPGS
Magnitude: 1.00 
Reported by: Amateur Radio

Quarter sized hail and some flooding was reported on Rock Springs Road in Kingsport.

Thunderstorm Wind in SEVIER, TENNESSEE
From 22-MAY-11 17:15:00 to 22-MAY-11 17:15:00 (EST-5)
Location: MILLICAN
Magnitude: 55.00 EG
Reported by: Law Enforcement

A few trees were reported down across the northeastern part of the county.