Strong low pressure over the Midwest remained cutoff from jet stream on the 16th. The warm front associated with this system passed through during the morning. Warm and moist southerly winds behind the front provided moderate amounts of instability. The instability combined with forcing from the low for showers and thunderstorms to develop.
There was enough instability along with strong winds aloft for some thunderstorms to become severe.

Thunderstorm Wind in GRANT, WEST VIRGINIA
From 16-APR-11 14:42:00 to 16-APR-11 14:42:00 (EST-5)
Location: ROUGH RUN
Magnitude: 52.00 EG
Reported by: Public

A thunderstorm wind gust was estimated to be around 60 mph.

Thunderstorm Wind in GRANT, WEST VIRGINIA
From 16-APR-11 14:43:00 to 16-APR-11 14:43:00 (EST-5)
Location: ROUGH RUN
Magnitude: 61.00 EG
Property damage: 1.00K
Reported by: Public

Trees were down near Masonville.

Thunderstorm Wind in GRANT, WEST VIRGINIA
From 16-APR-11 14:45:00 to 16-APR-11 14:45:00 (EST-5)
Location: DORCAS
Magnitude: 61.00 EG
Property damage: 1.00K
Reported by: Fire Department/Rescue

A tree was down along Elkhorn Road.

Thunderstorm Wind in GRANT, WEST VIRGINIA
From 16-APR-11 14:45:00 to 16-APR-11 14:45:00 (EST-5)
Location: HISER
Magnitude: 61.00 EG
Property damage: 1.00K
Reported by: Public

Trees were down near Dorcas.

Hail in GRANT, WEST VIRGINIA
From 16-APR-11 14:42:00 to 16-APR-11 14:42:00 (EST-5)
Location: ROUGH RUN
Magnitude: 1.50 
Reported by: Public

Hail up to the size of ping pong balls was reported near Masonville.

Hail in PENDLETON, WEST VIRGINIA
From 16-APR-11 14:57:00 to 16-APR-11 14:57:00 (EST-5)
Location: FRANKLIN
Magnitude: 1.25 
Reported by: Public

Hail up to the size of half dollars was reported about one mile southwest of Franklin.

Hail in PENDLETON, WEST VIRGINIA
From 16-APR-11 14:58:00 to 16-APR-11 14:58:00 (EST-5)
Location: FRANKLIN
Magnitude: 1.00 
Reported by: Public

Hail up to the size of quarters was reported near Franklin.

Thunderstorm Wind in PENDLETON, WEST VIRGINIA
From 16-APR-11 15:00:00 to 16-APR-11 15:00:00 (EST-5)
Location: RUDDLE
Magnitude: 52.00 EG
Property damage: 1.00K
Reported by: Trained Spotter

A few trees were down about five miles north of Franklin.

Thunderstorm Wind in HAMPSHIRE, WEST VIRGINIA
From 16-APR-11 15:26:00 to 16-APR-11 15:26:00 (EST-5)
Location: SLANESVILLE
Magnitude: 52.00 EG
Property damage: 1.00K
Reported by: Fire Department/Rescue

A tree was down in Slanesville.

Thunderstorm Wind in HARDY, WEST VIRGINIA
From 16-APR-11 13:06:00 to 16-APR-11 13:06:00 (EST-5)
Location: NEEDMORE
Magnitude: 52.00 EG
Property damage: 1.00K
Reported by: Fire Department/Rescue

A few trees were down along Arkansas Road.

Hail in GRANT, WEST VIRGINIA
From 16-APR-11 14:44:00 to 16-APR-11 14:44:00 (EST-5)
Location: HISER
Magnitude: 1.00 
Reported by: Public

Hail up to the size of quarters was reported near Dorcas.

Hail in PENDLETON, WEST VIRGINIA
From 16-APR-11 15:40:00 to 16-APR-11 15:40:00 (EST-5)
Location: SUGAR GROVE
Magnitude: 1.50 
Reported by: Fire Department/Rescue

Hail up to the size of ping pong balls was reported near Palo Alto.

Hail in PENDLETON, WEST VIRGINIA
From 16-APR-11 14:55:00 to 16-APR-11 14:55:00 (EST-5)
Location: FRANKLIN
Magnitude: 1.00 
Reported by: Public

Hail up to the size of quarters was reported near Franklin.

Hail in PENDLETON, WEST VIRGINIA
From 16-APR-11 14:56:00 to 16-APR-11 14:56:00 (EST-5)
Location: FRANKLIN
Magnitude: 1.00 
Reported by: Public

Hail up to the size of quarters was reported near Franklin.

Thunderstorm Wind in BERKELEY, WEST VIRGINIA
From 16-APR-11 14:11:00 to 16-APR-11 14:11:00 (EST-5)
Location: TOMAHAWK
Magnitude: 52.00 EG
Property damage: 1.00K
Reported by: Fire Department/Rescue

Trees were down along Butts Mill Road.

Hail in GRANT, WEST VIRGINIA
From 16-APR-11 14:43:00 to 16-APR-11 14:43:00 (EST-5)
Location: ROUGH RUN
Magnitude: 1.50 
Reported by: Public

Hail up to the size of ping pong balls was reported near Masonville.