Three separate squall line/bowing segments began impacting the Middle Tennessee area around mid day and ending around midnight. These systems produced mostly damaging straight line winds with some hail.

Hail in HICKMAN, TENNESSEE
From 21-MAY-13 10:57:00 to 21-MAY-13 11:04:00 (CST-6)
Location: AETNA
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hickman County Emergency Management reported three-quarter inch hail falling seven miles south-southwest of Centerville.

Hail in RUTHERFORD, TENNESSEE
From 21-MAY-13 12:05:00 to 21-MAY-13 12:10:00 (CST-6)
Location: SMYRNA ARPT
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Amateur Radio operator reported nickel sized hail at the Smyrna Airport (KMQY).

Hail in WILSON, TENNESSEE
From 21-MAY-13 12:09:00 to 21-MAY-13 12:20:00 (CST-6)
Location: LEBANON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported quarter sized hail three miles north of Lebanon.

Hail in BEDFORD, TENNESSEE
From 21-MAY-13 12:48:00 to 21-MAY-13 12:58:00 (CST-6)
Location: SHELBYVILLE
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

An amateur radio operator reported dime to nickel sized hail falling two miles north of the city of Shelbyville.

Lightning in CLAY, TENNESSEE
From 21-MAY-13 13:16:00 to 21-MAY-13 13:16:00 (CST-6)
Location: CELINA
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Lightning struck a home in Celina causing damage. Type of damage was not specifically stated.

Thunderstorm Wind in WHITE, TENNESSEE
From 21-MAY-13 13:22:00 to 21-MAY-13 13:32:00 (CST-6)
Location: SPARTA WHITE CO ARPT
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

An amateur radio operator reported winds in excess of 60 mph near the Sparta Airport. Tree limbs were also reported downed.

Hail in OVERTON, TENNESSEE
From 21-MAY-13 13:23:00 to 21-MAY-13 13:28:00 (CST-6)
Location: MUDDY POND
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Nickel sized hail reported near Muddy Pond by the public.

Thunderstorm Wind in PUTNAM, TENNESSEE
From 21-MAY-13 13:24:00 to 21-MAY-13 13:34:00 (CST-6)
Location: POPLAR GROVE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Trees were reported downed near Dry Valley Road and Buck Mountain Road.

Thunderstorm Wind in DAVIDSON, TENNESSEE
From 21-MAY-13 21:03:00 to 21-MAY-13 21:13:00 (CST-6)
Location: WEST MEADE
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Local law enforcement reported downed power lines on Gower Road in West Nashville.

Thunderstorm Wind in DAVIDSON, TENNESSEE
From 21-MAY-13 21:05:00 to 21-MAY-13 21:15:00 (CST-6)
Location: VAUGHNS GAP
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A tree and power line were reported down by local broadcast media on Page Road in Belle Meade.

Thunderstorm Wind in OVERTON, TENNESSEE
From 21-MAY-13 13:25:00 to 21-MAY-13 13:35:00 (CST-6)
Location: HILHAM
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported a tree falling on a house on Old Union Road in the town of Hilham.

Thunderstorm Wind in PICKETT, TENNESSEE
From 21-MAY-13 13:41:00 to 21-MAY-13 13:56:00 (CST-6)
Location: BYRDSTOWN
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported a tree down on a house on Main Street in Byrdstown. Power outages were also reported in the city.

Thunderstorm Wind in WILSON, TENNESSEE
From 21-MAY-13 11:47:00 to 21-MAY-13 11:57:00 (CST-6)
Location: SILVER BOTTOM
Magnitude: 50.00 EG
Property damage: 2.50K
Crop damage: 0.00K
Reported by: Social Media

A report came via Twitter of trees and power lines down along Saddle Wood Drive in Mount Juliet due to gust front winds.

Thunderstorm Wind in WILSON, TENNESSEE
From 21-MAY-13 11:47:00 to 21-MAY-13 11:57:00 (CST-6)
Location: MT JULIET
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A report was received via Amateur Radio of shingles blown off a home in Mount Juliet from gust front winds.

Thunderstorm Wind in PUTNAM, TENNESSEE
From 21-MAY-13 12:57:00 to 21-MAY-13 13:12:00 (CST-6)
Location: COOKEVILLE ARPT
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Trees were reported down near the intersection of Knights Chapel Road and Shipley Road in northwest of Cookeville.

Thunderstorm Wind in PUTNAM, TENNESSEE
From 21-MAY-13 12:57:00 to 21-MAY-13 13:12:00 (CST-6)
Location: DOUBLE SPGS
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A roof was blown off of a barn at the intersection of West Gate Road and Highway 70.

Thunderstorm Wind in JACKSON, TENNESSEE
From 21-MAY-13 13:02:00 to 21-MAY-13 13:12:00 (CST-6)
Location: OLD ANTIOCH
Magnitude: 60.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A roof was reportedly blown off a house on Sugar Creek Road.

Thunderstorm Wind in PUTNAM, TENNESSEE
From 21-MAY-13 13:25:00 to 21-MAY-13 13:35:00 (CST-6)
Location: COOKEVILLE ARPT
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

A Twitter report of trees down was reported near the intersection of Dobson Branch Road and Bartlett Road in Cookeville.

Thunderstorm Wind in RUTHERFORD, TENNESSEE
From 21-MAY-13 12:09:00 to 21-MAY-13 12:09:00 (CST-6)
Location: SMYRNA ARPT
Magnitude: 66.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

The ASOS at the Smyrna Airport (KMQY) measured a wind gust of 76 mph.

Thunderstorm Wind in OVERTON, TENNESSEE
From 21-MAY-13 13:20:00 to 21-MAY-13 13:30:00 (CST-6)
Location: LIVINGSTON
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Public

The public reported a tree falling on a house seven miles west-northwest of Livingston due to winds estimated over 50 mph.

Thunderstorm Wind in SMITH, TENNESSEE
From 21-MAY-13 12:15:00 to 21-MAY-13 12:52:00 (CST-6)
Location: CARTHAGE
Magnitude: 60.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A report was received via 911 dispatch of trees down across Smith county.

Thunderstorm Wind in SMITH, TENNESSEE
From 21-MAY-13 12:33:00 to 21-MAY-13 12:43:00 (CST-6)
Location: CARTHAGE
Magnitude: 60.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported multiple trees down across the city of Carthage.

Thunderstorm Wind in JACKSON, TENNESSEE
From 21-MAY-13 12:43:00 to 21-MAY-13 13:20:00 (CST-6)
Location: GAINESBORO
Magnitude: 60.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Local police reported trees downed across Jackson county. Power was also reported out across half the county.

Thunderstorm Wind in CLAY, TENNESSEE
From 21-MAY-13 12:48:00 to 21-MAY-13 13:44:00 (CST-6)
Location: CELINA
Magnitude: 60.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Several trees were reported down across the county with multiple power outages.

Thunderstorm Wind in FENTRESS, TENNESSEE
From 21-MAY-13 13:59:00 to 21-MAY-13 14:09:00 (CST-6)
Location: ARMATHWAITE
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported a large tree blocking traffic on Mount Helen Road east of Allardt. The tree caused an accident but there were no injuries.

Thunderstorm Wind in FENTRESS, TENNESSEE
From 21-MAY-13 14:00:00 to 21-MAY-13 14:10:00 (CST-6)
Location: GRIMSLEY
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The county emergency manager reported numerous trees down. A carport was damaged as well due to the winds.

Thunderstorm Wind in PERRY, TENNESSEE
From 21-MAY-13 19:52:00 to 21-MAY-13 20:02:00 (CST-6)
Location: LINDEN
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

The Sheriff's Department in Perry county reported a tree down on Old Linden Highway near Linden.

Thunderstorm Wind in SUMNER, TENNESSEE
From 21-MAY-13 11:52:00 to 21-MAY-13 12:02:00 (CST-6)
Location: CEDAR GROVE
Magnitude: 60.00 EG
Property damage: 250.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Severe gust front winds caused a large road construction crane to collapse onto a car that was driving on the highway 109 bridge over the Cumberland River about 2 miles south of Gallatin. The car had two occupants. One was hospitalized with minor injuries. The other was uninjured.

Thunderstorm Wind in DAVIDSON, TENNESSEE
From 21-MAY-13 11:20:00 to 21-MAY-13 11:33:00 (CST-6)
Location: NASHVILLE
Magnitude: 50.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The Davidson County Emergency Manager reported over 25 different tree down or power lines down reports across Metro Nashville.

Thunderstorm Wind in WILLIAMSON, TENNESSEE
From 21-MAY-13 11:24:00 to 21-MAY-13 11:38:00 (CST-6)
Location: FRANKLIN
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Social Media

A Twitter report was received reporting trees and powerlines down along a few roads in Franklin.

Thunderstorm Wind in PUTNAM, TENNESSEE
From 21-MAY-13 12:57:00 to 21-MAY-13 13:12:00 (CST-6)
Location: DOUBLE SPGS
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A roof was blown off a house on Plunk Whitson Road in the Double Springs community.