A hot and humid air mass created surface based CAPE values near 4500 J/kg and lifted indices near -8 during peak heating hours. Thunderstorms initiated during the evening hours as a stationary front just to the north of the county warning area interacted with a sea breeze. Numerous outflow boundaries from initial thunderstorm activity produced additional thunderstorms through the early overnight hours. Some thunderstorms produced damaging winds and heavy rainfall.

Thunderstorm Wind in CHARLESTON, SOUTH CAROLINA
From 13-AUG-10 17:20:00 to 13-AUG-10 17:21:00 (EST-5)
Location: CHARLESTON HGTS
Magnitude: 50.00 EG
Property damage: 0.75K
Crop damage: 0.00K
Reported by: Public

The public reported 2 inch diameter limbs down in North Charleston.

Thunderstorm Wind in CHARLESTON, SOUTH CAROLINA
From 13-AUG-10 17:24:00 to 13-AUG-10 17:25:00 (EST-5)
Location: CHARLESTON HGTS
Magnitude: 50.00 EG
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported a railroad cross arm bent over the catwalk that goes across the tracks.

Thunderstorm Wind in BERKELEY, SOUTH CAROLINA
From 13-AUG-10 17:27:00 to 13-AUG-10 17:28:00 (EST-5)
Location: THE FARMS
Magnitude: 50.00 EG
Property damage: 7.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported privacy fences blown down in various yards. The spotter also reported several trees blown down across parts of Foster Creek Road.

Thunderstorm Wind in BERKELEY, SOUTH CAROLINA
From 13-AUG-10 17:20:00 to 13-AUG-10 17:21:00 (EST-5)
Location: GOOSE CREEK
Magnitude: 61.00 EG
Reported by: Law Enforcement

Law enforcement estimated 60 to 70 mph winds in Goose Creek.

Thunderstorm Wind in CHARLESTON, SOUTH CAROLINA
From 13-AUG-10 17:24:00 to 13-AUG-10 17:25:00 (EST-5)
Location: CHARLESTON HGTS
Magnitude: 52.00 EG
Reported by: Trained Spotter

A spotter estimated 60 mph gusts near the intersection of Ashley Phosphate Road and Rivers Avenue.

Thunderstorm Wind in BERKELEY, SOUTH CAROLINA
From 13-AUG-10 17:35:00 to 13-AUG-10 17:36:00 (EST-5)
Location: GOOSE CREEK
Magnitude: 50.00 EG
Property damage: 2.50K
Crop damage: 0.00K
Reported by: Public

The public reported several 3 to 4 inch diameter limbs down near Otranto South Carolina.

Thunderstorm Wind in CHARLESTON, SOUTH CAROLINA
From 13-AUG-10 17:34:00 to 13-AUG-10 17:35:00 (EST-5)
Location: CHARLESTON HGTS
Magnitude: 50.00 EG
Property damage: 0.25K
Crop damage: 0.00K
Reported by: Trained Spotter

A spotter reported 2 inch diameter limbs down near the intersection of Ashley Phosphate Road and Rivers Avenue.

Thunderstorm Wind in BERKELEY, SOUTH CAROLINA
From 13-AUG-10 17:30:00 to 13-AUG-10 17:31:00 (EST-5)
Location: INNESS
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Public

The public reported several trees down and on roads in the Harbor Lakes Subdivision area.

Thunderstorm Wind in DORCHESTER, SOUTH CAROLINA
From 13-AUG-10 18:15:00 to 13-AUG-10 18:16:00 (EST-5)
Location: GIVHANS
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported a tree down on Jelico Court.

Heavy Rain in CHARLESTON, SOUTH CAROLINA
From 13-AUG-10 18:00:00 to 13-AUG-10 18:01:00 (EST-5)
Location: DEER PARK
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Local media reported a 73 year old woman drowned after she drove off a parking lot into a retention pond. Witnesses say she could not see the sharp drop-off from the parking lot to the retention pond due to heavy rain at the time. The woman was transported to Roper Hospital where she was pronounced dead due to drowning.