A well developed upper level trough moved from the Eastern Plains to the Eastern Seaboard with an associated strong low pressure system and cold front. A squall line formed ahead of the front and swept across the Southern Appalachian region from mid morning through the mid afternoon hours. Several reports of straight line wind damage were received during the event along with limited reports of large hail. Most of the damage was on the Cumberland Plateau and across Southeast Tennessee with more isolated damage reported in Southwest Virginia and Southwest North Carolina.

Thunderstorm Wind in MONROE, TENNESSEE
From 01-MAR-17 16:15:00 to 01-MAR-17 16:15:00 (EST-5)
Location: SOUTH CENTER
Magnitude: 50.00 EG
Reported by: State Official

A few trees were reported down across the county.

Flash Flood in ANDERSON, TENNESSEE
From 01-MAR-17 14:30:00 to 01-MAR-17 15:30:00 (EST-5)
Location: CLINTON
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Flooding reported at the Ponderosa Zoo.

Thunderstorm Wind in MORGAN, TENNESSEE
From 01-MAR-17 10:10:00 to 01-MAR-17 10:10:00 (EST-5)
Location: WARTBURG
Magnitude: 50.00 EG
Reported by: State Official

A tree and power lines were reported down on Montgomery Road in Lancing.

Hail in HAMILTON, TENNESSEE
From 01-MAR-17 15:30:00 to 01-MAR-17 15:30:00 (EST-5)
Location: CHICKAMAUGA
Magnitude: 1.75 
Reported by: Public

Golf ball sized hail was reported at Chattanooga.

Thunderstorm Wind in MORGAN, TENNESSEE
From 01-MAR-17 10:27:00 to 01-MAR-17 10:27:00 (EST-5)
Location: COALFIELD
Magnitude: 55.00 EG
Reported by: State Official

Highway 62 was closed due to downed trees on power lines and leaning power poles near Big Mountain.

Thunderstorm Wind in CAMPBELL, TENNESSEE
From 01-MAR-17 10:55:00 to 01-MAR-17 10:55:00 (EST-5)
Location: OSWEGO
Magnitude: 50.00 EG
Reported by: State Official

Trees were reported down at Jellico.

Thunderstorm Wind in ANDERSON, TENNESSEE
From 01-MAR-17 13:33:00 to 01-MAR-17 13:33:00 (EST-5)
Location: NORRIS
Magnitude: 50.00 EG
Reported by: State Official

A tree was reported down at Norris.

Thunderstorm Wind in ROANE, TENNESSEE
From 01-MAR-17 13:30:00 to 01-MAR-17 13:30:00 (EST-5)
Location: KINGSTON
Magnitude: 50.00 EG
Reported by: State Official

Several trees were reported down across Roane County.

Thunderstorm Wind in ROANE, TENNESSEE
From 01-MAR-17 13:38:00 to 01-MAR-17 13:38:00 (EST-5)
Location: DYLLIS
Magnitude: 50.00 EG
Reported by: Broadcast Media

A large tree was reported down at the intersection of West Outer and Warwick Lane in Oak Ridge.

Thunderstorm Wind in KNOX, TENNESSEE
From 01-MAR-17 14:05:00 to 01-MAR-17 14:05:00 (EST-5)
Location: KINGSLEY
Magnitude: 50.00 EG
Reported by: Broadcast Media

A tin roof was torn off a Barn five miles south of Knoxville.

Thunderstorm Wind in KNOX, TENNESSEE
From 01-MAR-17 15:25:00 to 01-MAR-17 15:25:00 (EST-5)
Location: ROCKY HILL
Magnitude: 50.00 EG
Reported by: Public

Minor roof damage was reported in Rocky Hill.

Thunderstorm Wind in RHEA, TENNESSEE
From 01-MAR-17 14:40:00 to 01-MAR-17 14:40:00 (EST-5)
Location: MORGANTOWN
Magnitude: 50.00 EG
Reported by: State Official

Several trees were reported down in the southern half of Rhea County.

Flash Flood in ROANE, TENNESSEE
From 01-MAR-17 14:40:00 to 01-MAR-17 15:45:00 (EST-5)
Location: KINGSTON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Flooding of fields with creeks out of their banks.

Flash Flood in ANDERSON, TENNESSEE
From 01-MAR-17 14:41:00 to 01-MAR-17 15:45:00 (EST-5)
Location: MARLOW
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Flooding along Marlow Road.

Flash Flood in UNION, TENNESSEE
From 01-MAR-17 14:50:00 to 01-MAR-17 16:00:00 (EST-5)
Location: PAULETTE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Flooding along Hwy 33, particularly at intersections with Raccoon Valley Road and Hansard Road.

Flash Flood in KNOX, TENNESSEE
From 01-MAR-17 17:15:00 to 01-MAR-17 18:30:00 (EST-5)
Location: KNOXVILLE DOWNTOWN I
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Road flooded near Ijams Nature Center.

Thunderstorm Wind in HAMILTON, TENNESSEE
From 01-MAR-17 15:16:00 to 01-MAR-17 15:16:00 (EST-5)
Location: NORTH CHATTANOOGA
Magnitude: 58.00 EG
Reported by: Public

A gust to 67 mph was recorded by a Davis Weather Station at 33 feet above ground level. Additionally, several large trees were reported down and power poles were damaged in the area.

Thunderstorm Wind in HAMILTON, TENNESSEE
From 01-MAR-17 15:17:00 to 01-MAR-17 15:17:00 (EST-5)
Location: LUPTON CITY
Magnitude: 50.00 EG
Reported by: Public

Trees and power lines were downed on Welch Road.

Hail in MARION, TENNESSEE
From 01-MAR-17 01:05:00 to 01-MAR-17 01:05:00 (CST-6)
Location: JASPER
Magnitude: 1.00 
Reported by: CoCoRaHS

Quarter sized hail was reported at Jasper.

Hail in MARION, TENNESSEE
From 01-MAR-17 14:02:00 to 01-MAR-17 14:02:00 (CST-6)
Location: GLOVER HILL
Magnitude: 1.75 
Reported by: Emergency Manager

Golf ball sized hail was reported at Jasper.

Hail in HAMILTON, TENNESSEE
From 01-MAR-17 15:25:00 to 01-MAR-17 15:25:00 (EST-5)
Location: CHICKAMAUGA
Magnitude: 1.00 
Reported by: Public

Quarter sized hail was reported at Chattanooga.

Thunderstorm Wind in SEVIER, TENNESSEE
From 01-MAR-17 15:37:00 to 01-MAR-17 15:37:00 (EST-5)
Location: CATLETTSBURG
Magnitude: 50.00 EG
Reported by: State Official

Several trees were reported down across the county.

Thunderstorm Wind in HAMILTON, TENNESSEE
From 01-MAR-17 15:30:00 to 01-MAR-17 15:30:00 (EST-5)
Location: CHICKAMAUGA
Magnitude: 50.00 EG
Reported by: Utility Company

Numerous trees and power lines were reported down across Hamilton County.

Thunderstorm Wind in SEVIER, TENNESSEE
From 01-MAR-17 15:42:00 to 01-MAR-17 15:42:00 (EST-5)
Location: CATLETTSBURG
Magnitude: 50.00 EG
Reported by: Broadcast Media

The siding was removed from a tractor supply company.

Thunderstorm Wind in BRADLEY, TENNESSEE
From 01-MAR-17 15:45:00 to 01-MAR-17 15:45:00 (EST-5)
Location: CLEVELAND ARPT
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Trees and power lines were reported down on Eagle Drive.

Flash Flood in ANDERSON, TENNESSEE
From 01-MAR-17 14:27:00 to 01-MAR-17 15:30:00 (EST-5)
Location: CLINTON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Creek out of its banks on Gamble Farm.

Thunderstorm Wind in HAMILTON, TENNESSEE
From 01-MAR-17 15:45:00 to 01-MAR-17 15:45:00 (EST-5)
Location: CHICKAMAUGA
Magnitude: 55.00 EG
Reported by: Emergency Manager

A light pole was downed and a tent was blown across a street on the University of Tennessee-Chattanooga campus.

Thunderstorm Wind in ANDERSON, TENNESSEE
From 01-MAR-17 10:40:00 to 01-MAR-17 10:40:00 (EST-5)
Location: OAK RIDGE
Magnitude: 50.00 EG
Reported by: State Official

Trees were reported down on Key Springs Road.

Thunderstorm Wind in SEQUATCHIE, TENNESSEE
From 01-MAR-17 13:20:00 to 01-MAR-17 13:20:00 (CST-6)
Location: DUNLAP
Magnitude: 50.00 EG
Reported by: Trained Spotter

Trees were reported down at Dunlap.

Thunderstorm Wind in BRADLEY, TENNESSEE
From 01-MAR-17 15:39:00 to 01-MAR-17 15:39:00 (EST-5)
Location: HOPEWELL
Magnitude: 50.00 EG
Reported by: Emergency Manager

Trees were reported down on Frontage Road and US 11.

Hail in MARION, TENNESSEE
From 01-MAR-17 13:54:00 to 01-MAR-17 13:54:00 (CST-6)
Location: HAVERON CHAPEL
Magnitude: 2.50 
Reported by: Emergency Manager

Tennis ball sized hail was reported two miles northeast of Orme.