A mature squall line crossed from eastern Tennessee, into the mountains of North Carolina, during the early afternoon hours. While the shear was fairly weak, the strong cold pool and moderate instability ahead of the line supported quite a bit of wind damage as the storms moved out across the northern upstate of South Carolina. Other more discrete storms developed over the western part of the upstate. These storms also produced damaging winds and some large hail.

Thunderstorm Wind in SPARTANBURG, SOUTH CAROLINA
From 18-JUN-11 14:17:00 to 18-JUN-11 14:22:00 (EST-5)
Location: LANDRUM
Magnitude: 50.00 EG
Reported by: Amateur Radio

Power lines were blown down on Red Hill Lane in Landrum and at Cannon Ford
Rd and Country Estates Rd in Fingerville. Trees were also blown down at Cooley
Springs School Rd and McSwain Rd.

Thunderstorm Wind in SPARTANBURG, SOUTH CAROLINA
From 18-JUN-11 14:36:00 to 18-JUN-11 14:44:00 (EST-5)
Location: HAYNE
Magnitude: 50.00 EG
Reported by: Law Enforcement

A tree was blown down at highway 9 and Business 85. A tree was blown onto a house on Fulton Ave and trees were blown down on North St and Duncan St in the city of Spartanburg.

Hail in OCONEE, SOUTH CAROLINA
From 18-JUN-11 14:45:00 to 18-JUN-11 14:45:00 (EST-5)
Location: TOKEENA XRDS
Magnitude: 0.88 
Reported by: Trained Spotter

Hail in OCONEE, SOUTH CAROLINA
From 18-JUN-11 14:46:00 to 18-JUN-11 14:46:00 (EST-5)
Location: TOKEENA XRDS
Magnitude: 1.25 
Reported by: Public

Hail a little smaller than golf ball size fell along Coneross Creek Rd about 6 miles south southeast of Seneca.

Thunderstorm Wind in UNION, SOUTH CAROLINA
From 18-JUN-11 15:02:00 to 18-JUN-11 15:02:00 (EST-5)
Location: JOHNS
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Large tree limbs were blown down on telephone lines on Forest St in Jonesville.

Thunderstorm Wind in CHEROKEE, SOUTH CAROLINA
From 18-JUN-11 14:47:00 to 18-JUN-11 14:47:00 (EST-5)
Location: GAFFNEY
Magnitude: 50.00 EG
Reported by: Amateur Radio

Trees were blown down near the highway 29/105 intersection.

Thunderstorm Wind in CHEROKEE, SOUTH CAROLINA
From 18-JUN-11 14:48:00 to 18-JUN-11 14:48:00 (EST-5)
Location: BLACKSBURG
Magnitude: 50.00 EG
Reported by: Law Enforcement

A tree was blown down on I-85 at mile marker 104. Another tree was blown down in the same area on East Cherokee St.

Thunderstorm Wind in ANDERSON, SOUTH CAROLINA
From 18-JUN-11 14:55:00 to 18-JUN-11 15:05:00 (EST-5)
Location: SANDY SPGS
Magnitude: 50.00 EG
Reported by: County Official

Trees and large limbs were blown down on Burns Bridge Rd at Grate Rd. Trees were also blown onto highway 187 in the same area. A boat dock was also damaged off of Indian Trail. A tree was also blown down on Falcon's Landing, about 6 miles northwest of Anderson.

Thunderstorm Wind in CHESTER, SOUTH CAROLINA
From 18-JUN-11 15:29:00 to 18-JUN-11 15:40:00 (EST-5)
Location: WILKSBURG
Magnitude: 50.00 EG
Reported by: Amateur Radio

Multiple power lines were blown down from the western part of the county to the city of Chester.

Thunderstorm Wind in LAURENS, SOUTH CAROLINA
From 18-JUN-11 15:35:00 to 18-JUN-11 15:45:00 (EST-5)
Location: CLINTON
Magnitude: 50.00 EG
Reported by: Law Enforcement

A tree was blown down on highway 308, about a mile north of Clinton. Trees and large limbs were also blown down on York St in town. A final tree fell on Young Rd, about 3 miles southeast of town.

Thunderstorm Wind in GREENWOOD, SOUTH CAROLINA
From 18-JUN-11 16:58:00 to 18-JUN-11 16:58:00 (EST-5)
Location: GODSEY
Magnitude: 50.00 EG
Reported by: Law Enforcement

Several trees were blown down along highway 702 east of Ninety Six.

Hail in ABBEVILLE, SOUTH CAROLINA
From 18-JUN-11 15:42:00 to 18-JUN-11 15:42:00 (EST-5)
Location: DUE WEST
Magnitude: 0.75 
Reported by: Trained Spotter

Penny size hail was reported at highway 20 and Willie Kay Rd.

Lightning in OCONEE, SOUTH CAROLINA
From 18-JUN-11 17:15:00 to 18-JUN-11 17:15:00 (EST-5)
Location: BATTLE CREEK
Reported by: County Official

Two people were injured by a lightning strike on the Chattooga River.

Thunderstorm Wind in OCONEE, SOUTH CAROLINA
From 18-JUN-11 13:30:00 to 18-JUN-11 13:30:00 (EST-5)
Location: WESTMINSTER
Magnitude: 50.00 EG
Reported by: County Official

Trees were blown onto power lines on Dr. Johns Rd in Westminster.

Thunderstorm Wind in GREENWOOD, SOUTH CAROLINA
From 18-JUN-11 17:25:00 to 18-JUN-11 17:25:00 (EST-5)
Location: CALLISON
Magnitude: 50.00 EG
Reported by: Law Enforcement

A couple trees were blown down along highway 67 near Callison.

Thunderstorm Wind in ANDERSON, SOUTH CAROLINA
From 18-JUN-11 17:47:00 to 18-JUN-11 17:55:00 (EST-5)
Location: TOWNVILLE
Magnitude: 50.00 EG
Reported by: Law Enforcement

Several trees were blown down to the south of Pendleton, including on I-85 near mile marker 11, at highway 187 and Fisher Jenkins Rd on highway 76 near Sandy Springs.