A southerly flow between upper-level low pressure over the Midwest and upper-level high pressure over the Atlantic Ocean produced a warm and moist airmass over the region. A surface trough also remained overhead during this time. The instability from the airmass along with the surface trough triggered showers and thunderstorms. High amounts of instability along with strong winds aloft caused thunderstorms to become severe with large hail being the primary threat.

Hail in MINERAL, WEST VIRGINIA
From 26-MAY-11 15:32:00 to 26-MAY-11 15:32:00 (EST-5)
Location: SHORT GAP
Magnitude: 1.00 
Reported by: Public

Quarter sized hail was reported at Short Gap.

Hail in HARDY, WEST VIRGINIA
From 26-MAY-11 16:31:00 to 26-MAY-11 16:31:00 (EST-5)
Location: HOLLY HILL CHURCH
Magnitude: 1.00 
Reported by: Public

Quarter sized hail was reported along Dove Hollow Road.

Hail in PENDLETON, WEST VIRGINIA
From 26-MAY-11 17:42:00 to 26-MAY-11 17:42:00 (EST-5)
Location: DAHMER
Magnitude: 1.00 
Reported by: COOP Observer

Quarter sized hail was reported near Brandywine.

Hail in BERKELEY, WEST VIRGINIA
From 26-MAY-11 17:47:00 to 26-MAY-11 17:47:00 (EST-5)
Location: TABLERS
Magnitude: 1.00 
Reported by: Public

Quarter sized hail was reported along Tabler Station Road.

Hail in JEFFERSON, WEST VIRGINIA
From 26-MAY-11 17:57:00 to 26-MAY-11 17:57:00 (EST-5)
Location: KEARNEYSVILLE
Magnitude: 1.00 
Reported by: Trained Spotter

Quarter sized hail was reported in Kearneysville.

Hail in BERKELEY, WEST VIRGINIA
From 26-MAY-11 17:47:00 to 26-MAY-11 17:47:00 (EST-5)
Location: TABLERS
Magnitude: 1.25 
Reported by: Public

Hail up to the size of half dollars was reported along Old Table Station Road.

Thunderstorm Wind in MORGAN, WEST VIRGINIA
From 26-MAY-11 15:53:00 to 26-MAY-11 15:53:00 (EST-5)
Location: ORLEANS XRDS
Magnitude: 56.00 EG
Property damage: 1.00K
Reported by: Fire Department/Rescue

A large tree fell across Orleans Road.

Thunderstorm Wind in HARDY, WEST VIRGINIA
From 26-MAY-11 17:10:00 to 26-MAY-11 17:10:00 (EST-5)
Location: WARDENSVILLE
Magnitude: 52.00 EG
Property damage: 1.00K
Reported by: Fire Department/Rescue

A tree was down along wires behind a Convenience Store in Wardensville.

Thunderstorm Wind in BERKELEY, WEST VIRGINIA
From 26-MAY-11 17:30:00 to 26-MAY-11 17:30:00 (EST-5)
Location: GERRARDSTOWN
Magnitude: 52.00 EG
Property damage: 1.00K
Reported by: Trained Spotter

A maple tree six inches in diameter was snapped.

Thunderstorm Wind in GRANT, WEST VIRGINIA
From 26-MAY-11 22:10:00 to 26-MAY-11 22:10:00 (EST-5)
Location: LANDES
Magnitude: 52.00 EG
Property damage: 1.00K
Reported by: Trained Spotter

A tree was down across a portion off US 220 near the Pendleton County Line.

Thunderstorm Wind in MINERAL, WEST VIRGINIA
From 26-MAY-11 14:39:00 to 26-MAY-11 14:39:00 (EST-5)
Location: LAUREL DALE
Magnitude: 52.00 EG
Reported by: Unknown

A tree was down near Sulphur City.

Thunderstorm Wind in HARDY, WEST VIRGINIA
From 26-MAY-11 22:49:00 to 26-MAY-11 22:49:00 (EST-5)
Location: OLDFIELDS
Magnitude: 52.00 EG
Property damage: 1.00K
Reported by: Fire Department/Rescue

Several trees were down along Route 28 north of Old Fields.

Thunderstorm Wind in BERKELEY, WEST VIRGINIA
From 26-MAY-11 17:40:00 to 26-MAY-11 17:40:00 (EST-5)
Location: (MRB)SHEPHERD FLD MR
Magnitude: 52.00 EG
Property damage: 0.50K
Reported by: County Official

A large limb was down along Tablers Station Road.

Hail in MINERAL, WEST VIRGINIA
From 26-MAY-11 15:18:00 to 26-MAY-11 15:18:00 (EST-5)
Location: MARYLAND JCT
Magnitude: 1.00 
Reported by: Trained Spotter

Quarter sized hail was reported near Ridgeley.

Hail in MINERAL, WEST VIRGINIA
From 26-MAY-11 15:33:00 to 26-MAY-11 15:33:00 (EST-5)
Location: SHORT GAP
Magnitude: 1.00 
Reported by: Public

Quarter sized hail was reported in Short Gap.

Hail in MINERAL, WEST VIRGINIA
From 26-MAY-11 15:20:00 to 26-MAY-11 15:20:00 (EST-5)
Location: SHORT GAP
Magnitude: 1.50 
Reported by: Trained Spotter

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

Thunderstorm Wind in HARDY, WEST VIRGINIA
From 26-MAY-11 23:10:00 to 26-MAY-11 23:10:00 (EST-5)
Location: LOST CITY
Magnitude: 56.00 EG
Property damage: 5.00K
Reported by: Fire Department/Rescue

Several trees were down around Mathias.