A mesoscale convective system moved along a boundary situated over east central Ohio, southern Pennsylvania and Northern West Virginia. Severe thunderstorms across eastern Ohio, southwest Pennsylvania, northern West Virginia, and Garrett county Maryland produced widespread wind damage with 50 thousand homes left without power. The counties that were hardest hit were Belmont and Jefferson counties in Ohio, where numerous large trees blocked roadways and three large radio station towers collapsed.

Thunderstorm Wind in BELMONT, OHIO
From 04-AUG-10 14:45:00 to 04-AUG-10 14:45:00 (EST-5)
Location: MORRISTOWN
Magnitude: 50.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported numerous large trees down and a large tree on a house in Morristown.

Thunderstorm Wind in BELMONT, OHIO
From 04-AUG-10 14:50:00 to 04-AUG-10 14:50:00 (EST-5)
Location: BARNESVILLE
Magnitude: 50.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Public

The public reported numerous trees down in Barnesville.

Thunderstorm Wind in HARRISON, OHIO
From 04-AUG-10 14:55:00 to 04-AUG-10 14:55:00 (EST-5)
Location: NEW ATHENS
Magnitude: 50.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency Management reported numerous large pine trees snapped off in New Athens.

Thunderstorm Wind in BELMONT, OHIO
From 04-AUG-10 15:02:00 to 04-AUG-10 15:02:00 (EST-5)
Location: ST CLAIRSVILLE
Magnitude: 87.00 EG
Property damage: 120.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency management reported that three 370-foot WWVA radio station towers were blown over and destroyed near Barton.

Thunderstorm Wind in COSHOCTON, OHIO
From 04-AUG-10 14:30:00 to 04-AUG-10 14:30:00 (EST-5)
Location: WEST LAFAYETTE
Magnitude: 50.00 EG
Property damage: 40.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported numerous trees and power lines down in West Lafayette.

Hail in BELMONT, OHIO
From 04-AUG-10 15:00:00 to 04-AUG-10 15:00:00 (EST-5)
Location: ST CLAIRSVILLE
Magnitude: 1.00 
Reported by: Public

Thunderstorm Wind in COSHOCTON, OHIO
From 04-AUG-10 13:55:00 to 04-AUG-10 13:55:00 (EST-5)
Location: TYNDALL
Magnitude: 50.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Public

The public reported widespread tree damage with large limbs down near Tyndall.

Thunderstorm Wind in MUSKINGUM, OHIO
From 04-AUG-10 14:09:00 to 04-AUG-10 14:09:00 (EST-5)
Location: DUNCAN FALLS
Magnitude: 50.00 EG
Property damage: 40.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter in Philo reported numerous trees and power lines down.

Thunderstorm Wind in BELMONT, OHIO
From 04-AUG-10 15:10:00 to 04-AUG-10 15:10:00 (EST-5)
Location: ST CLAIRSVILLE
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Public

The public reported that a roof was blown off of an outbuilding.

Thunderstorm Wind in JEFFERSON, OHIO
From 04-AUG-10 15:10:00 to 04-AUG-10 15:10:00 (EST-5)
Location: TILTONSVILLE
Magnitude: 50.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported numerous trees down in Tiltonsville.

Thunderstorm Wind in JEFFERSON, OHIO
From 04-AUG-10 15:10:00 to 04-AUG-10 15:10:00 (EST-5)
Location: WINTERSVILLE
Magnitude: 50.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported numerous trees down in Wintersville.

Thunderstorm Wind in BELMONT, OHIO
From 04-AUG-10 14:40:00 to 04-AUG-10 14:40:00 (EST-5)
Location: MORRISTOWN
Magnitude: 70.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Newspaper

A newspaper reported the collapse of baseball dugouts and fencing at a Morristown highschool. The baseball bleachers were also blown over.