An east to west front had lifted north into southern Ohio and northern West Virginia during the day.  By mid afternoon, the front was south of Columbus Ohio to near the Mason Dixon line around Morgantown. More clouds and cooler temperatures lingered north of the boundary.  In southern Ohio and western West Virginia, more sunshine allowed for warmer temperatures and increased instability during the afternoon.  Temperatures had warmed to the mid and upper 70s with dew points in the lower 60s.
Thunderstorms formed during the mid afternoon and moved east.  One long lived cell came across the Ohio River and into Wood County producing large hail.  Another cell on the southern edge of a larger cluster of showers and thunderstorms pulsed to stronger levels as it moved into Taylor County.  In a narrow corridor in Taylor County, golf ball to tennis ball size hail was observed. The largest hail stones were the size of baseballs. Considerable damage was done around Grafton.

Hail in TAYLOR, WEST VIRGINIA
From 28-APR-16 16:50:00 to 28-APR-16 16:50:00 (EST-5)
Location: KNOTSVILLE
Magnitude: 1.50 
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in TAYLOR, WEST VIRGINIA
From 28-APR-16 16:52:00 to 28-APR-16 16:52:00 (EST-5)
Location: FETTERMAN
Magnitude: 2.50 
Property damage: 250.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail as large as tennis balls fell. Vehicles were dented with their windows cracked or smashed out.

Hail in TAYLOR, WEST VIRGINIA
From 28-APR-16 16:53:00 to 28-APR-16 16:53:00 (EST-5)
Location: FETTERMAN
Magnitude: 1.50 
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Hail in TAYLOR, WEST VIRGINIA
From 28-APR-16 17:10:00 to 28-APR-16 17:10:00 (EST-5)
Location: KNOTSVILLE
Magnitude: 1.75 
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Public

Golf ball size hail fell on a golf course.

Hail in TAYLOR, WEST VIRGINIA
From 28-APR-16 17:10:00 to 28-APR-16 17:10:00 (EST-5)
Location: THORNTON
Magnitude: 1.50 
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail was mostly dime size, but a few stones were the size of ping pong balls.

Hail in TAYLOR, WEST VIRGINIA
From 28-APR-16 17:15:00 to 28-APR-16 17:15:00 (EST-5)
Location: MT PLEASANT
Magnitude: 1.75 
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Public

Hail in JACKSON, WEST VIRGINIA
From 28-APR-16 14:01:00 to 28-APR-16 14:01:00 (EST-5)
Location: LE ROY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Post Office

Hail in WIRT, WEST VIRGINIA
From 28-APR-16 15:27:00 to 28-APR-16 15:27:00 (EST-5)
Location: MORRISTOWN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in RANDOLPH, WEST VIRGINIA
From 28-APR-16 16:10:00 to 28-APR-16 16:10:00 (EST-5)
Location: BEVERLY
Magnitude: 1.25 
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Public

Hail in RANDOLPH, WEST VIRGINIA
From 28-APR-16 16:16:00 to 28-APR-16 16:16:00 (EST-5)
Location: BEVERLY
Magnitude: 1.00 
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in RANDOLPH, WEST VIRGINIA
From 28-APR-16 16:18:00 to 28-APR-16 16:18:00 (EST-5)
Location: DAILEY
Magnitude: 1.00 
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in RANDOLPH, WEST VIRGINIA
From 28-APR-16 16:18:00 to 28-APR-16 16:18:00 (EST-5)
Location: BEVERLY
Magnitude: 1.25 
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Public

Hail in UPSHUR, WEST VIRGINIA
From 28-APR-16 16:45:00 to 28-APR-16 16:45:00 (EST-5)
Location: CARTER
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in TAYLOR, WEST VIRGINIA
From 28-APR-16 16:52:00 to 28-APR-16 16:52:00 (EST-5)
Location: GRAFTON
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A few trees were blown down.

Hail in WOOD, WEST VIRGINIA
From 28-APR-16 17:20:00 to 28-APR-16 17:20:00 (EST-5)
Location: MINERAL WELLS
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in WOOD, WEST VIRGINIA
From 28-APR-16 17:26:00 to 28-APR-16 17:26:00 (EST-5)
Location: MINERAL WELLS
Magnitude: 2.00 
Property damage: 75.00K
Crop damage: 0.00K
Reported by: Trained Spotter

The largest hail that fell was bigger than golf balls.  Vehicles and house siding were damaged.

Hail in TAYLOR, WEST VIRGINIA
From 28-APR-16 16:55:00 to 28-APR-16 16:59:00 (EST-5)
Location: PRUNYTOWN
Magnitude: 2.75 
Property damage: 3.80M
Crop damage: 0.00K
Reported by: Emergency Manager

Hail as large as baseballs fell.  The county emergency manager and insurance companies, tallied over 800 damaged vehicles in the county with dents, windows cracked, or rear windows smashed out.  The emergency manager told the National Weather Service it looked like someone had taken a sledge hammer to the vehicles. This included dozens of vehicles at a Ford dealership and 8 sheriff vehicles.  The county sheriff said, I���ve never seen a hail storm this bad. I���ve seen hail damage before, but I���ve never seen anything like this in all my life.'  Almost every vehicle parked along Maple Avenue was damaged.
The principal of Grafton High School said, our auditorium was damaged, our gymnasiums were damaged, our greenhouse was damaged, we have a significant number of windows in the facility damaged, every skylight that we have was broken.
The emergency manager and insurance companies also figured around 260 buildings were affected, mostly with window, roof or siding damage.  Also, 6 campers and 6 boats were damaged.  The antique bulbs on their downtown street light poles were also broken.
You don't expect it to happen here, but when it does, you're just kind of in shock and awe, was how one local resident summed up the scene and its aftermath.

Hail in WIRT, WEST VIRGINIA
From 28-APR-16 17:45:00 to 28-APR-16 17:45:00 (EST-5)
Location: FREEPORT
Magnitude: 2.00 
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Public

Hail in GILMER, WEST VIRGINIA
From 28-APR-16 18:23:00 to 28-APR-16 18:23:00 (EST-5)
Location: REVERE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A few hail stones were as large as quarters.

Hail in WOOD, WEST VIRGINIA
From 28-APR-16 17:40:00 to 28-APR-16 17:40:00 (EST-5)
Location: WALKER
Magnitude: 1.75 
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Social Media

Hail as large as golf balls fell.