A deep cutoff area of low pressure was located over the Great Lakes with a surface cold front trailing to the south. A humid air mass was in place at the surface with dewpoints in the upper 60s to lower 70s contributing to very low LCLs, as low as 1000 ft. Severe thunderstorms developed during the morning as height falls and a developing low level jet accelerated.

Thunderstorm Wind in MARLBORO, SOUTH CAROLINA
From 28-APR-11 06:49:00 to 28-APR-11 06:51:00 (EST-5)
Location: WALLACE
Magnitude: 56.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Trees were reportedly down and blocking the roadway.

Thunderstorm Wind in FLORENCE, SOUTH CAROLINA
From 28-APR-11 07:21:00 to 28-APR-11 07:23:00 (EST-5)
Location: OLANTA
Magnitude: 56.00 EG
Property damage: 17.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A National Weather Service Storm Survey Team concluded straight-line winds to 65 mph caused minor roof damage to several homes along Moore Street. In addition, numerous large tree limbs were broken. The time was estimated based on radar data.

Thunderstorm Wind in FLORENCE, SOUTH CAROLINA
From 28-APR-11 07:26:00 to 28-APR-11 07:28:00 (EST-5)
Location: SALEM NORTH
Magnitude: 56.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A National Weather Service Storm Survey Team concluded straight-line winds to 65 mph uprooted one tree and broke a few large tree limbs near the intersection of Highway 541 and Brown Road. The time was estimated based on radar data.

Thunderstorm Wind in FLORENCE, SOUTH CAROLINA
From 28-APR-11 07:27:00 to 28-APR-11 07:29:00 (EST-5)
Location: SALEM NORTH
Magnitude: 52.00 EG
Property damage: 1.50K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A National Weather Service Storm Survey Team concluded straight-line winds to 60 mph uprooted a 12 inch pine tree on Highway 541 near Gregorys Circle. The time was estimated based on radar data.

Thunderstorm Wind in FLORENCE, SOUTH CAROLINA
From 28-APR-11 07:31:00 to 28-APR-11 07:33:00 (EST-5)
Location: COWARD
Magnitude: 56.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A National Weather Service Storm Survey Team concluded straight-line winds to 65 mph damaged the porch of a mobile home. Minor shingle damage to a few roofs was observed. A 10 inch ornamental tree was snapped and numerous large tree limbs were down. The damage occurred on East Friendfield Road, just east of Highway 52. The time was estimated based on radar data.

Thunderstorm Wind in FLORENCE, SOUTH CAROLINA
From 28-APR-11 07:35:00 to 28-APR-11 07:37:00 (EST-5)
Location: FRIENDFIELD
Magnitude: 56.00 EG
Property damage: 4.50K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A National Weather Service Storm Survey Team concluded straight-line winds to 65 mph uprooted a 16 inch hardwood tree. Several large tree limbs were also down. The damage occurred on East Friendfield Road. The time was estimated based on radar data.

Thunderstorm Wind in FLORENCE, SOUTH CAROLINA
From 28-APR-11 07:33:00 to 28-APR-11 07:35:00 (EST-5)
Location: COWARD
Magnitude: 56.00 EG
Property damage: 8.50K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A National Weather Service Storm Survey Team concluded straight-line winds to 65 mph destroyed a metal carport on Union School Road and blew it 75 yards downwind. A wooden fence was also destroyed and some siding was blown off a house on Union School Road. A large tree fell onto Shiloh Church of God on East Friendfield Road. The time was estimated based on radar data.

Thunderstorm Wind in FLORENCE, SOUTH CAROLINA
From 28-APR-11 07:40:00 to 28-APR-11 07:42:00 (EST-5)
Location: EVERGREEN
Magnitude: 56.00 EG
Property damage: 8.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A few pine trees and large tree limbs were reportedly down near the intersection of East Effingham Highway and Pamplico Highway.

Thunderstorm Wind in FLORENCE, SOUTH CAROLINA
From 28-APR-11 07:41:00 to 28-APR-11 07:43:00 (EST-5)
Location: PAMPLICO
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A National Weather Service Storm Survey Team concluded straight-line winds to 60 mph downed several large tree limbs along East Coleman Avenue, south of Highway 51.  The time was estimated based on radar data.

Thunderstorm Wind in FLORENCE, SOUTH CAROLINA
From 28-APR-11 07:42:00 to 28-APR-11 07:44:00 (EST-5)
Location: PAMPLICO
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A National Weather Service Storm Survey Team concluded straight-line winds to 60 mph downed several large tree limbs along River Road near Lewis Road. The time was estimated based on radar data.

Thunderstorm Wind in MARION, SOUTH CAROLINA
From 28-APR-11 07:52:00 to 28-APR-11 07:54:00 (EST-5)
Location: PEEDEE
Magnitude: 56.00 EG
Property damage: 6.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Several trees were reportedly down and blocking the roadway near the intersection of Highway 76 and Highway 301. The time was estimated based on radar data.

Hail in FLORENCE, SOUTH CAROLINA
From 28-APR-11 10:00:00 to 28-APR-11 10:02:00 (EST-5)
Location: HOWE
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail to the size of nickels was reported near South Florence High School and Highway 301.

Thunderstorm Wind in FLORENCE, SOUTH CAROLINA
From 28-APR-11 07:44:00 to 28-APR-11 07:46:00 (EST-5)
Location: FORESTVILLE
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A National Weather Service Storm Survey Team concluded straight-line winds to 60 mph downed several large tree limbs along South Old River Road. The time was estimated based on radar data.