A weak short wave trough moved east across the mid south generating convection ahead of an associated cold frontal boundary. Instability was weak but moderate westerly flow allowed for sufficient shear. Scattered severe convection developed during the late afternoon and early evening across Eastern Tennessee.

Flash Flood in HAMILTON, TENNESSEE
From 11-SEP-10 19:00:00 to 11-SEP-10 21:00:00 (EST-5)
Location: SODDY DAISY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Flash flooding was occurring with several inches of water reported over a few roads in the Soddy Daisy area.

Thunderstorm Wind in JEFFERSON, TENNESSEE
From 11-SEP-10 19:12:00 to 11-SEP-10 19:12:00 (EST-5)
Location: DANDRIDGE
Magnitude: 50.00 EG
Reported by: Law Enforcement

One tree was reported down.

Lightning in WASHINGTON, TENNESSEE
From 11-SEP-10 19:30:00 to 11-SEP-10 19:30:00 (EST-5)
Location: JOHNSON CITY
Property damage: 150.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Lightning struck a home and caused a fire which destroyed a home.

Thunderstorm Wind in BLOUNT, TENNESSEE
From 11-SEP-10 18:15:00 to 11-SEP-10 18:15:00 (EST-5)
Location: MARYVILLE
Magnitude: 55.00 EG
Reported by: Amateur Radio

One tree was reported down on a trailer in Christopher Court Trailer Park on Cross Street in Maryville.

Thunderstorm Wind in KNOX, TENNESSEE
From 11-SEP-10 18:25:00 to 11-SEP-10 18:25:00 (EST-5)
Location: BLUE GRASS
Magnitude: 55.00 EG
Reported by: Law Enforcement

One tree was reported down near Louisville.

Thunderstorm Wind in MCMINN, TENNESSEE
From 11-SEP-10 18:25:00 to 11-SEP-10 18:25:00 (EST-5)
Location: ZION HILL
Magnitude: 55.00 EG
Reported by: Law Enforcement

Numerous trees were reported down across the eastern half of the county.

Thunderstorm Wind in SCOTT, TENNESSEE
From 11-SEP-10 16:46:00 to 11-SEP-10 16:46:00 (EST-5)
Location: HUNTSVILLE
Magnitude: 55.00 EG
Reported by: Law Enforcement

One tree was reported down on Huntsville Hill Road.

Thunderstorm Wind in ROANE, TENNESSEE
From 11-SEP-10 17:20:00 to 11-SEP-10 17:20:00 (EST-5)
Location: KINGSTON
Magnitude: 55.00 EG
Reported by: Law Enforcement

A few trees were reported down near Kingston.

Thunderstorm Wind in CLAIBORNE, TENNESSEE
From 11-SEP-10 17:45:00 to 11-SEP-10 17:45:00 (EST-5)
Location: UNION
Magnitude: 50.00 EG
Reported by: Law Enforcement

One tree was reported down on Forge Ridge Road.

Thunderstorm Wind in UNION, TENNESSEE
From 11-SEP-10 17:48:00 to 11-SEP-10 17:48:00 (EST-5)
Location: LITTLE BARREN
Magnitude: 50.00 EG
Reported by: Law Enforcement

Two trees were reported down across Highway 33 about a mile and a half from the Claiborne County line.

Thunderstorm Wind in KNOX, TENNESSEE
From 11-SEP-10 18:28:00 to 11-SEP-10 18:28:00 (EST-5)
Location: COWARDS
Magnitude: 55.00 EG
Reported by: Law Enforcement

A few trees and large limbs as well as power lines were reported down across the western half of the county.

Thunderstorm Wind in BLOUNT, TENNESSEE
From 11-SEP-10 18:30:00 to 11-SEP-10 18:30:00 (EST-5)
Location: MARYVILLE
Magnitude: 55.00 EG
Reported by: Law Enforcement

Numerous trees and power lines were reported down countywide.

Thunderstorm Wind in MONROE, TENNESSEE
From 11-SEP-10 18:30:00 to 11-SEP-10 18:30:00 (EST-5)
Location: MADISONVILLE
Magnitude: 55.00 EG
Reported by: Law Enforcement

Numerous trees were reported down countywide.

Thunderstorm Wind in KNOX, TENNESSEE
From 11-SEP-10 17:55:00 to 11-SEP-10 17:55:00 (EST-5)
Location: JOHN SEVIER STATION
Magnitude: 55.00 EG
Reported by: Law Enforcement

A few trees were reported down across the eastern third of the county.

Thunderstorm Wind in GRAINGER, TENNESSEE
From 11-SEP-10 18:10:00 to 11-SEP-10 18:10:00 (EST-5)
Location: CENTRAL PT
Magnitude: 50.00 EG
Reported by: Law Enforcement

One small tree was reported down on Helton Road.

Thunderstorm Wind in KNOX, TENNESSEE
From 11-SEP-10 18:50:00 to 11-SEP-10 18:50:00 (EST-5)
Location: WEST KNOXVILLE
Magnitude: 50.00 EG
Reported by: Law Enforcement

A few trees and power lines were reported down in South Knoxville.