A low amplitude short wave trough and associated surface frontal boundary moved southeast out of the Lower Ohio Valley across the Southern Appalachian producing widespread reports of large hail along with some wind damage; mainly south of Interstate 40.

Thunderstorm Wind in LOUDON, TENNESSEE
From 21-MAR-17 18:15:00 to 21-MAR-17 18:15:00 (EST-5)
Location: HIGHLAND PARK
Magnitude: 50.00 EG
Reported by: Trained Spotter

Several trees were reported down along the interstate.

Thunderstorm Wind in MARION, TENNESSEE
From 21-MAR-17 17:30:00 to 21-MAR-17 17:30:00 (CST-6)
Location: WHITWELL
Magnitude: 50.00 EG
Reported by: Public

Power lines were reported down.

Thunderstorm Wind in MCMINN, TENNESSEE
From 21-MAR-17 19:00:00 to 21-MAR-17 19:00:00 (EST-5)
Location: ATHENS
Magnitude: 50.00 EG
Reported by: Amateur Radio

A few trees were reported down across the county. One was across County Road 442 and another at County Road 750 near County Road 604.

Thunderstorm Wind in POLK, TENNESSEE
From 21-MAR-17 16:55:00 to 21-MAR-17 16:55:00 (EST-5)
Location: SYLCO
Magnitude: 50.00 EG
Reported by: State Official

Several trees and power lines were reported down.

Thunderstorm Wind in MARION, TENNESSEE
From 21-MAR-17 16:30:00 to 21-MAR-17 16:30:00 (CST-6)
Location: WHITWELL
Magnitude: 50.00 EG
Reported by: Public

Power lines were reported down.

Thunderstorm Wind in HAMILTON, TENNESSEE
From 21-MAR-17 18:15:00 to 21-MAR-17 18:15:00 (EST-5)
Location: HIXON
Magnitude: 50.00 EG
Reported by: Emergency Manager

Fifteen to twenty structures were damaged from a downburst in the Dallas Bay area of the county along Chickamauga Lake. The area which suffered the most damage is along Barkley Lane where a roof was removed from a single family home. Another home was partially blown off its foundation.

Thunderstorm Wind in POLK, TENNESSEE
From 21-MAR-17 19:00:00 to 21-MAR-17 19:00:00 (EST-5)
Location: HIWASSEE BEACH
Magnitude: 50.00 EG
Reported by: State Official

Numerous trees were reported down across the county.

Thunderstorm Wind in LOUDON, TENNESSEE
From 21-MAR-17 18:12:00 to 21-MAR-17 18:12:00 (EST-5)
Location: HIGHLAND PARK
Magnitude: 52.00 EG
Reported by: Amateur Radio

Wind speeds were estimated at 60 to 70 mph.

Thunderstorm Wind in KNOX, TENNESSEE
From 21-MAR-17 18:53:00 to 21-MAR-17 18:53:00 (EST-5)
Location: POWELL
Magnitude: 50.00 EG
Reported by: Public

One tree was reported down.

Thunderstorm Wind in MONROE, TENNESSEE
From 21-MAR-17 19:00:00 to 21-MAR-17 19:00:00 (EST-5)
Location: MADISONVILLE
Magnitude: 50.00 EG
Reported by: State Official

Numerous trees were reported down across the county.

Thunderstorm Wind in BLOUNT, TENNESSEE
From 21-MAR-17 18:55:00 to 21-MAR-17 18:55:00 (EST-5)
Location: PROVIDENCE
Magnitude: 50.00 EG
Reported by: Emergency Manager

A few trees and power lines were reported down across portions of the county.

Thunderstorm Wind in BLOUNT, TENNESSEE
From 21-MAR-17 19:35:00 to 21-MAR-17 19:35:00 (EST-5)
Location: CADES COVE
Magnitude: 50.00 EG
Reported by: Park/Forest Service

Two large limbs were reported down near Cades Cove.

Thunderstorm Wind in BLOUNT, TENNESSEE
From 21-MAR-17 19:15:00 to 21-MAR-17 19:15:00 (EST-5)
Location: CHILHOWEE
Magnitude: 50.00 EG
Reported by: State Official

A downed tree was blocking Happy Valley Road and Highway 129 near Chilhowee Lake.

Hail in BRADLEY, TENNESSEE
From 21-MAR-17 17:15:00 to 21-MAR-17 17:15:00 (EST-5)
Location: CLEVELAND
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Spotter reported ping pong to golf ball size hail in Cleveland.

Hail in BRADLEY, TENNESSEE
From 21-MAR-17 17:30:00 to 21-MAR-17 17:30:00 (EST-5)
Location: CLEVELAND
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Public reported golf ball size hail.

Hail in BRADLEY, TENNESSEE
From 21-MAR-17 17:30:00 to 21-MAR-17 17:30:00 (EST-5)
Location: CLEVELAND
Magnitude: 2.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Hail stripped leaves, dented cars, damaged shingles and broke car windows.

Hail in ROANE, TENNESSEE
From 21-MAR-17 17:45:00 to 21-MAR-17 17:45:00 (EST-5)
Location: LAWNVILLE
Magnitude: 1.75 
Reported by: Broadcast Media

Golf ball size hail was reported along Buttermilk Road.

Hail in ROANE, TENNESSEE
From 21-MAR-17 19:20:00 to 21-MAR-17 19:20:00 (EST-5)
Location: KINGSTON
Magnitude: 1.00 
Reported by: Amateur Radio

Nickel to quarter size hail was reported near Dogwood Shores Estates.

Thunderstorm Wind in MARION, TENNESSEE
From 21-MAR-17 15:30:00 to 21-MAR-17 15:30:00 (CST-6)
Location: WHITWELL
Magnitude: 50.00 EG
Reported by: Emergency Manager

Power lines were reported down across the county mainly north of Whitwell. Also, roof damage was reported at a house in New Hope.

Thunderstorm Wind in SEQUATCHIE, TENNESSEE
From 21-MAR-17 15:30:00 to 21-MAR-17 15:30:00 (CST-6)
Location: DUNLAP
Magnitude: 50.00 EG
Reported by: State Official

Several trees were reported down from north of Dunlap to the county line. Dime size hail was also reported in the area.

Hail in ROANE, TENNESSEE
From 21-MAR-17 17:45:00 to 21-MAR-17 17:45:00 (EST-5)
Location: KINGSTON
Magnitude: 1.00 
Reported by: Amateur Radio

Nickel to quarter size hail was reported near Dogwood Shores Estates.

Hail in ROANE, TENNESSEE
From 21-MAR-17 17:55:00 to 21-MAR-17 17:55:00 (EST-5)
Location: LAWNVILLE
Magnitude: 1.00 
Reported by: Trained Spotter

Quarter size hail was reported.

Hail in LOUDON, TENNESSEE
From 21-MAR-17 18:00:00 to 21-MAR-17 18:00:00 (EST-5)
Location: LOUDON
Magnitude: 1.00 
Reported by: Broadcast Media

Quarter size hail was reported.

Hail in HAMILTON, TENNESSEE
From 21-MAR-17 18:12:00 to 21-MAR-17 18:12:00 (EST-5)
Location: SALEM
Magnitude: 1.25 
Reported by: Public

Half dollar size hail was reported.

Hail in LOUDON, TENNESSEE
From 21-MAR-17 18:12:00 to 21-MAR-17 18:12:00 (EST-5)
Location: DIXIE LEE JCT
Magnitude: 2.00 
Reported by: Broadcast Media

Two inch diameter hail was reported.

Hail in KNOX, TENNESSEE
From 21-MAR-17 18:15:00 to 21-MAR-17 18:15:00 (EST-5)
Location: POWELL
Magnitude: 1.75 
Reported by: Public

Golf ball size hail was reported near Clinton Highway and Schaad Road.

Hail in KNOX, TENNESSEE
From 21-MAR-17 18:20:00 to 21-MAR-17 18:20:00 (EST-5)
Location: POWELL
Magnitude: 1.50 
Reported by: Amateur Radio

Ping pong size hail was reported.

Hail in BRADLEY, TENNESSEE
From 21-MAR-17 17:39:00 to 21-MAR-17 17:39:00 (EST-5)
Location: CLEVELAND
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Quarter size hail.

Hail in BRADLEY, TENNESSEE
From 21-MAR-17 17:08:00 to 21-MAR-17 17:08:00 (EST-5)
Location: HOPEWELL
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Quarter to half dollar size hail reported by amateur radio.

Thunderstorm Wind in ROANE, TENNESSEE
From 21-MAR-17 18:30:00 to 21-MAR-17 18:30:00 (EST-5)
Location: POPLAR SPGS
Magnitude: 50.00 EG
Reported by: Amateur Radio

A tree was reported down near mile marker 359 on Interstate 40.

Hail in BRADLEY, TENNESSEE
From 21-MAR-17 17:26:00 to 21-MAR-17 17:26:00 (EST-5)
Location: CLEVELAND
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Quarter size hail reported in Cleveland.