An anomalously strong ridge centered across the Southeast brought record heat to the Upper Ohio Valley with the area in a zonal flow on the northern edge of the ridge. A weak frontal boundary extended from northern Indiana into western Pennsylvania.  Abundant moisture (1.75-2.00 PWAT), strong instability (SBCAPE 4000-5000 J/kg), moderate shear (40kts 0-6km), and a short wave just south of the boundary provided the ingredients for a long-tracked mesoscale convective system, classified by the Storm Prediction Center as a derecho, to track all the way from northern Indiana across eastern Ohio, southwestern Pennsylvania, northern WV, and western Maryland. As the MCS crossed the area, widespread wind damage was reported across areas primarily south and west of Pittsburgh. There were several reports of structural damage and damage led to a fatality when a barn collapsed in Muskingum county. Power outages were widespread with up to 130,000 outages reported immediately after the storms passage, most of which, were in Ohio. Muskingum and Guernsey counties sustained $712,000 and $500,000 in damages respectively. This also became on of the the costliest disasters to hit Ohio, right behind Hurricane Ike in 2008.  Across West Virginia, the following was the preliminary damage for public assistance only:  Marion $171,000, Marshall $138,000, Monongalia $57,000, Preston $123,000, Tucker $52,000, Wetzel $286,000.

Thunderstorm Wind in MONONGALIA, WEST VIRGINIA
From 29-JUN-12 18:47:00 to 29-JUN-12 18:47:00 (EST-5)
Location: CLINTON FURNACE
Magnitude: 60.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported a tree down.

Thunderstorm Wind in MONONGALIA, WEST VIRGINIA
From 29-JUN-12 18:47:00 to 29-JUN-12 18:47:00 (EST-5)
Location: WESTOVER
Magnitude: 60.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Public

The public reported large branches broken.

Thunderstorm Wind in MONONGALIA, WEST VIRGINIA
From 29-JUN-12 18:47:00 to 29-JUN-12 18:47:00 (EST-5)
Location: FIELDCREST
Magnitude: 60.00 EG
Property damage: 2.50K
Crop damage: 0.00K
Reported by: Public

The public reported trees down.

Thunderstorm Wind in MARION, WEST VIRGINIA
From 29-JUN-12 18:55:00 to 29-JUN-12 18:55:00 (EST-5)
Location: BETHLEHEM
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency manager reported that a mobile home slid off of it's foundation.

Thunderstorm Wind in MONONGALIA, WEST VIRGINIA
From 29-JUN-12 18:59:00 to 29-JUN-12 18:59:00 (EST-5)
Location: WESTOVER
Magnitude: 60.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency management reported that there are 56 trees down throughout the county.

Thunderstorm Wind in PRESTON, WEST VIRGINIA
From 29-JUN-12 18:59:00 to 29-JUN-12 18:59:00 (EST-5)
Location: KINGWOOD
Magnitude: 60.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency management reported numerous trees down.

Thunderstorm Wind in PRESTON, WEST VIRGINIA
From 29-JUN-12 19:04:00 to 29-JUN-12 19:04:00 (EST-5)
Location: LAUREL RUN
Magnitude: 60.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency management reported numerous trees down.

Hail in MARION, WEST VIRGINIA
From 29-JUN-12 18:34:00 to 29-JUN-12 18:34:00 (EST-5)
Location: FAIRMONT
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in PRESTON, WEST VIRGINIA
From 29-JUN-12 19:05:00 to 29-JUN-12 19:05:00 (EST-5)
Location: REEDSVILLE
Magnitude: 87.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Straight-line winds caused damage to bleachers at the Reedsville fairgrounds. A light pole was also knocked over. In addition, three homes and one double wide manufactured home were damaged. The three homes suffered partial roof damage with siding and shingles peeling off the homes. A stand-alone garage had it's roof removed and was destroyed. The double wide manufactured home was shifted 6 inches off of it's foundation. 15-20 trees were also downed in the area.

Hail in MARION, WEST VIRGINIA
From 29-JUN-12 18:47:00 to 29-JUN-12 18:47:00 (EST-5)
Location: HOPEWELL
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in WETZEL, WEST VIRGINIA
From 29-JUN-12 17:55:00 to 29-JUN-12 17:55:00 (EST-5)
Location: NEW MARTINSVILLE
Magnitude: 60.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency management reported numerous trees down.

Thunderstorm Wind in TUCKER, WEST VIRGINIA
From 29-JUN-12 19:06:00 to 29-JUN-12 19:06:00 (EST-5)
Location: ST GEORGE
Magnitude: 60.00 EG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: State Official

State official reported numerous trees down county wide.

Thunderstorm Wind in WETZEL, WEST VIRGINIA
From 29-JUN-12 17:59:00 to 29-JUN-12 17:59:00 (EST-5)
Location: PORTERS FALLS
Magnitude: 60.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency manager reported numerous trees down.

Thunderstorm Wind in WETZEL, WEST VIRGINIA
From 29-JUN-12 17:59:00 to 29-JUN-12 17:59:00 (EST-5)
Location: PROCTOR
Magnitude: 60.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency management reported numerous trees down.

Thunderstorm Wind in PRESTON, WEST VIRGINIA
From 29-JUN-12 19:08:00 to 29-JUN-12 19:08:00 (EST-5)
Location: TERRA ALTA
Magnitude: 60.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency management reported numerous trees down.

Thunderstorm Wind in WETZEL, WEST VIRGINIA
From 29-JUN-12 18:08:00 to 29-JUN-12 18:08:00 (EST-5)
Location: READER
Magnitude: 60.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency management reported debris and trees down on railroad tracks in reader. Trees are down across the county.

Thunderstorm Wind in MARSHALL, WEST VIRGINIA
From 29-JUN-12 18:10:00 to 29-JUN-12 18:10:00 (EST-5)
Location: LIMESTONE
Magnitude: 60.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency management reported numerous trees and power lines down.

Thunderstorm Wind in PRESTON, WEST VIRGINIA
From 29-JUN-12 19:15:00 to 29-JUN-12 19:15:00 (EST-5)
Location: ROWLESBURG
Magnitude: 60.00 EG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency management reported that there are trees down with some falling on structures across the county, especially in areas south of Kingwood.

Thunderstorm Wind in TUCKER, WEST VIRGINIA
From 29-JUN-12 19:25:00 to 29-JUN-12 19:25:00 (EST-5)
Location: SAND RUN JCT
Magnitude: 60.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: 911 Call Center

State official reported numerous trees down county wide.

Thunderstorm Wind in MARSHALL, WEST VIRGINIA
From 29-JUN-12 18:21:00 to 29-JUN-12 18:21:00 (EST-5)
Location: CAMERON
Magnitude: 60.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency management reported numerous trees and power lines down across the county.

Thunderstorm Wind in WETZEL, WEST VIRGINIA
From 29-JUN-12 18:21:00 to 29-JUN-12 18:21:00 (EST-5)
Location: HUNDRED
Magnitude: 60.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency management reported numerous trees down.

Thunderstorm Wind in OHIO, WEST VIRGINIA
From 29-JUN-12 18:25:00 to 29-JUN-12 18:25:00 (EST-5)
Location: WHEELING
Magnitude: 60.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency management reported numerous trees down throughout the county.

Thunderstorm Wind in MARION, WEST VIRGINIA
From 29-JUN-12 18:34:00 to 29-JUN-12 18:34:00 (EST-5)
Location: FAIRMONT
Magnitude: 60.00 EG
Property damage: 2.50K
Crop damage: 0.00K
Reported by: Public

The public reported trees down.

Thunderstorm Wind in MONONGALIA, WEST VIRGINIA
From 29-JUN-12 18:45:00 to 29-JUN-12 18:45:00 (EST-5)
Location: WESTOVER
Magnitude: 60.00 EG
Property damage: 2.50K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported 3 trees down. One on Marion Road, Warm Hollow Road, and Stone Mine Road.