This was a synoptic scale event.  A strong north to south temperature gradient existed along the Interstate 70 corridor in Ohio.  Low pressure moved out of Illinois in the morning, reaching western Pennsylvania by evening.
Individual thunderstorm cells developed in western Ohio and southern Indiana around midday, reaching into West Virginia during the late afternoon and evening.  Hail was initially the main impact, but stronger wind gusts developed as the thunderstorms
matured and consolidated.

Out ahead, a separate area of showers and thunderstorms bushed southern West Virginia during the late afternoon.

Hail in WOOD, WEST VIRGINIA
From 23-MAR-11 15:55:00 to 23-MAR-11 15:55:00 (EST-5)
Location: BLENNERHASSETT
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in WOOD, WEST VIRGINIA
From 23-MAR-11 15:40:00 to 23-MAR-11 15:40:00 (EST-5)
Location: WILLIAMSTOWN
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Large tree branches were blown down.

Thunderstorm Wind in HARRISON, WEST VIRGINIA
From 23-MAR-11 16:42:00 to 23-MAR-11 16:42:00 (EST-5)
Location: (CKB)BENEDUM ARPT CL
Magnitude: 57.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

A gust to 66 mph was measured.

Thunderstorm Wind in HARRISON, WEST VIRGINIA
From 23-MAR-11 16:45:00 to 23-MAR-11 16:45:00 (EST-5)
Location: BRIDGEPORT
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Large trees were blown down.  One tree was snapped in half.

Thunderstorm Wind in HARRISON, WEST VIRGINIA
From 23-MAR-11 16:42:00 to 23-MAR-11 16:42:00 (EST-5)
Location: WEST MILFORD
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Numerous trees were blown down.

Hail in HARRISON, WEST VIRGINIA
From 23-MAR-11 16:30:00 to 23-MAR-11 16:30:00 (EST-5)
Location: SHINNSTON
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in HARRISON, WEST VIRGINIA
From 23-MAR-11 16:45:00 to 23-MAR-11 16:45:00 (EST-5)
Location: BRIDGEPORT
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in PUTNAM, WEST VIRGINIA
From 23-MAR-11 16:45:00 to 23-MAR-11 16:45:00 (EST-5)
Location: POCA
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: NWS Employee

Trees were blown down along Bills Creek Road.

Hail in FAYETTE, WEST VIRGINIA
From 23-MAR-11 17:45:00 to 23-MAR-11 17:45:00 (EST-5)
Location: FAYETTEVILLE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in LINCOLN, WEST VIRGINIA
From 23-MAR-11 16:45:00 to 23-MAR-11 16:45:00 (EST-5)
Location: WEST HAMLIN
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees were blown down along Bear Creek.

Hail in LINCOLN, WEST VIRGINIA
From 23-MAR-11 16:45:00 to 23-MAR-11 16:45:00 (EST-5)
Location: WEST HAMLIN
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in LINCOLN, WEST VIRGINIA
From 23-MAR-11 16:50:00 to 23-MAR-11 16:50:00 (EST-5)
Location: HUBBALL
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in WEBSTER, WEST VIRGINIA
From 23-MAR-11 17:35:00 to 23-MAR-11 17:35:00 (EST-5)
Location: UPPERGLADE
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in KANAWHA, WEST VIRGINIA
From 23-MAR-11 17:05:00 to 23-MAR-11 17:05:00 (EST-5)
Location: COAL FORK
Magnitude: 1.75 
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Public

Hail in KANAWHA, WEST VIRGINIA
From 23-MAR-11 16:29:00 to 23-MAR-11 16:29:00 (EST-5)
Location: PINCH
Magnitude: 1.00 
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in KANAWHA, WEST VIRGINIA
From 23-MAR-11 16:30:00 to 23-MAR-11 16:30:00 (EST-5)
Location: FALLING ROCK
Magnitude: 1.00 
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in KANAWHA, WEST VIRGINIA
From 23-MAR-11 16:57:00 to 23-MAR-11 16:57:00 (EST-5)
Location: CROSS LANES
Magnitude: 50.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees were blown down.  One tree fell onto a house, damaging its roof.

Hail in WOOD, WEST VIRGINIA
From 23-MAR-11 16:05:00 to 23-MAR-11 16:05:00 (EST-5)
Location: PARKERSBURG
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in WOOD, WEST VIRGINIA
From 23-MAR-11 16:00:00 to 23-MAR-11 16:00:00 (EST-5)
Location: PARKERSBURG
Magnitude: 1.75 
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in WOOD, WEST VIRGINIA
From 23-MAR-11 15:50:00 to 23-MAR-11 15:50:00 (EST-5)
Location: WASHINGTON
Magnitude: 1.75 
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in KANAWHA, WEST VIRGINIA
From 23-MAR-11 17:12:00 to 23-MAR-11 17:12:00 (EST-5)
Location: HERNSHAW
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A mobile home was blown off its foundation, damaging belongings inside.  The 2 residents were trapped inside for a time.

Hail in NICHOLAS, WEST VIRGINIA
From 23-MAR-11 17:20:00 to 23-MAR-11 17:20:00 (EST-5)
Location: SUMMERSVILLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in UPSHUR, WEST VIRGINIA
From 23-MAR-11 17:05:00 to 23-MAR-11 17:05:00 (EST-5)
Location: FRENCH CREEK
Magnitude: 60.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A gust was measured to 69 mph.

Hail in NICHOLAS, WEST VIRGINIA
From 23-MAR-11 17:20:00 to 23-MAR-11 17:20:00 (EST-5)
Location: SUMMERSVILLE
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in RALEIGH, WEST VIRGINIA
From 23-MAR-11 15:10:00 to 23-MAR-11 15:10:00 (EST-5)
Location: ODD
Magnitude: 1.75 
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Post Office

Cars were dented at the post office.

Hail in RALEIGH, WEST VIRGINIA
From 23-MAR-11 15:20:00 to 23-MAR-11 15:20:00 (EST-5)
Location: GHENT
Magnitude: 1.75 
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Public

Hail in RALEIGH, WEST VIRGINIA
From 23-MAR-11 18:05:00 to 23-MAR-11 18:05:00 (EST-5)
Location: MIDWAY
Magnitude: 0.75 
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Public

Hail in FAYETTE, WEST VIRGINIA
From 23-MAR-11 17:55:00 to 23-MAR-11 17:55:00 (EST-5)
Location: MT HOPE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in POCAHONTAS, WEST VIRGINIA
From 23-MAR-11 18:05:00 to 23-MAR-11 18:05:00 (EST-5)
Location: DUNMORE
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Several trees were blown down.  Many of these trees were white pine.

Hail in TAYLOR, WEST VIRGINIA
From 23-MAR-11 16:50:00 to 23-MAR-11 16:50:00 (EST-5)
Location: GRAFTON
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in TAYLOR, WEST VIRGINIA
From 23-MAR-11 16:55:00 to 23-MAR-11 16:55:00 (EST-5)
Location: GRAFTON
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in TAYLOR, WEST VIRGINIA
From 23-MAR-11 16:50:00 to 23-MAR-11 16:50:00 (EST-5)
Location: GRAFTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in DODDRIDGE, WEST VIRGINIA
From 23-MAR-11 16:33:00 to 23-MAR-11 16:33:00 (EST-5)
Location: WEST UNION
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

A wind gust to 60 mph was estimated.

Thunderstorm Wind in BOONE, WEST VIRGINIA
From 23-MAR-11 17:15:00 to 23-MAR-11 17:15:00 (EST-5)
Location: JEFFREY
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees were blown down along Route 17 near Jeffrey and around Clothier.

Thunderstorm Wind in TAYLOR, WEST VIRGINIA
From 23-MAR-11 17:15:00 to 23-MAR-11 17:15:00 (EST-5)
Location: HEPZIBAH
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A mobile home was blown off its foundation.

Thunderstorm Wind in KANAWHA, WEST VIRGINIA
From 23-MAR-11 17:06:00 to 23-MAR-11 17:06:00 (EST-5)
Location: BARLOW
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees fell onto power lines along Rose Lane Drive in Mink Shoals.

Thunderstorm Wind in WOOD, WEST VIRGINIA
From 23-MAR-11 16:15:00 to 23-MAR-11 16:15:00 (EST-5)
Location: PARKERSBURG
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees fell onto power lines.

Hail in NICHOLAS, WEST VIRGINIA
From 23-MAR-11 17:42:00 to 23-MAR-11 17:42:00 (EST-5)
Location: RICHWOOD
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

The hail covered the ground.

Hail in RALEIGH, WEST VIRGINIA
From 23-MAR-11 17:50:00 to 23-MAR-11 17:50:00 (EST-5)
Location: BOLT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public