A boundary across the area triggered thunderstorms on the 5th. A few of the storms produced damaging thunderstorm wind.  But the main damage reports were from the flooding.

Thunderstorm Wind in COCKE, TENNESSEE
From 05-AUG-12 16:06:00 to 05-AUG-12 16:10:00 (EST-5)
Location: PARROTTSVILLE
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Department of Highways

Highway department personnel reported multiple trees downed by thunderstorm wind in the Parrottsville area.

Flash Flood in BLOUNT, TENNESSEE
From 05-AUG-12 17:40:00 to 05-AUG-12 17:45:00 (EST-5)
Location: WALLAND
Flood cause: Heavy Rain
Property damage: 3.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Mudslide occurred on Old Walland Highway.

Flash Flood in MONROE, TENNESSEE
From 05-AUG-12 17:42:00 to 05-AUG-12 18:45:00 (EST-5)
Location: MADISONVILLE
Flood cause: Heavy Rain
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Numerous road closures reported across the county according to FFS.

Flash Flood in UNICOI, TENNESSEE
From 05-AUG-12 18:00:00 to 05-AUG-12 21:00:00 (EST-5)
Location: UNICOI
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Newspaper

In and around town of Unicoi. Bedding of the railroad damaged. Serious flooding on Unicoi Drive, Massachusetts Avenue, and Pinnacle Road. Several residents were evacuated from Harris Hollow, Pippin Hollow, and Nelson Hollow Roads.

Flash Flood in BLOUNT, TENNESSEE
From 05-AUG-12 17:40:00 to 05-AUG-12 18:45:00 (EST-5)
Location: WALLAND
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Several roads in the area were impassable.

Flash Flood in UNICOI, TENNESSEE
From 05-AUG-12 17:55:00 to 05-AUG-12 18:55:00 (EST-5)
Location: ERWIN
Flood cause: Heavy Rain
Property damage: 2.00K
Crop damage: 0.00K
Reported by: 911 Call Center

High water closed portions of Highway 81 in Erwin.

Flash Flood in WASHINGTON, TENNESSEE
From 05-AUG-12 18:00:00 to 05-AUG-12 21:00:00 (EST-5)
Location: JOHNSON CITY
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Many roads in Johnson City were impassable. Water rescues necessary in downtown. Maintenance garage flooded, with several buses stranded. Riverview Drive on the Watauga River in Johnson City was impassable. Flooding reported at Silver Creek Apartments. Some downtown businesses were flooded.

Flash Flood in CARTER, TENNESSEE
From 05-AUG-12 18:45:00 to 05-AUG-12 20:45:00 (EST-5)
Location: ELIZABETHTON
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Flooding closed many roads across the city of Elizabethton and the county.

Flash Flood in WASHINGTON, TENNESSEE
From 05-AUG-12 18:00:00 to 05-AUG-12 21:00:00 (EST-5)
Location: JONESBORO
Flood cause: Heavy Rain
Property damage: 5.00M
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Significant Flash Flooding on Dry Creek. Several houses damaged, one house destroyed. A dozen miniature horses killed on a horse farm. Some automobiles destroyed. A mudslide uphill at the Methodist Camp may have temporarily dammed water whose release contributed to the flash flood. The mudslide carried large rocks and boulders into yards. Water rescues required. No civilian injuries. One water rescue raft flipped, resulting in minor injuries to the rescue team.