Low pressure passed through the area on the 14th. The low tracked along a boundary that separated warm and humid air to the south and west from cooler marine air to the north and east. The warm and humid air led to an unstable atmosphere, and there was enough instability for storms to become severe.

Thunderstorm Wind in MORGAN, WEST VIRGINIA
From 14-MAY-18 15:26:00 to 14-MAY-18 15:26:00 (EST-5)
Location: DOE GULLY
Magnitude: 50.00 EG
Reported by: 911 Call Center

A report of a tree down was near the intersection of Cacapon Road and York Lane.

Thunderstorm Wind in PENDLETON, WEST VIRGINIA
From 14-MAY-18 16:05:00 to 14-MAY-18 16:05:00 (EST-5)
Location: FRANKLIN
Magnitude: 52.00 EG
Reported by: Broadcast Media

Numerous trees were down in the Franklin area.

Thunderstorm Wind in JEFFERSON, WEST VIRGINIA
From 14-MAY-18 16:36:00 to 14-MAY-18 16:36:00 (EST-5)
Location: BLOOMERY
Magnitude: 50.00 EG
Reported by: Emergency Manager

Three homes had roof damage.

Thunderstorm Wind in PENDLETON, WEST VIRGINIA
From 14-MAY-18 16:05:00 to 14-MAY-18 16:05:00 (EST-5)
Location: FRANKLIN
Magnitude: 52.00 MG
Reported by: Trained Spotter

A wind gust of 60 mph was reported.

Hail in BERKELEY, WEST VIRGINIA
From 14-MAY-18 16:15:00 to 14-MAY-18 16:15:00 (EST-5)
Location: INWOOD
Magnitude: 1.00 
Reported by: Amateur Radio

Quarter sized hail was reported.

Hail in BERKELEY, WEST VIRGINIA
From 14-MAY-18 16:05:00 to 14-MAY-18 16:05:00 (EST-5)
Location: MARTINSBURG
Magnitude: 1.50 
Reported by: Trained Spotter

Ping pong ball sized hail was reported.

Hail in JEFFERSON, WEST VIRGINIA
From 14-MAY-18 16:15:00 to 14-MAY-18 16:15:00 (EST-5)
Location: MT PLEASANT
Magnitude: 1.75 
Reported by: Trained Spotter

Golf ball sized hail was reported.

Hail in JEFFERSON, WEST VIRGINIA
From 14-MAY-18 16:25:00 to 14-MAY-18 16:25:00 (EST-5)
Location: MIDDLEWAY
Magnitude: 1.50 
Reported by: Public

Ping pong ball sized hail was reported.

Hail in JEFFERSON, WEST VIRGINIA
From 14-MAY-18 16:30:00 to 14-MAY-18 16:30:00 (EST-5)
Location: CHARLES TOWN ARPT
Magnitude: 1.00 
Reported by: Trained Spotter

Quarter sized hail was reported.

Hail in JEFFERSON, WEST VIRGINIA
From 14-MAY-18 16:32:00 to 14-MAY-18 16:32:00 (EST-5)
Location: CHARLES TOWN
Magnitude: 2.50 
Reported by: Public

Hail 2.5 inches in diameter was measured off of Middleway Pike.

Hail in JEFFERSON, WEST VIRGINIA
From 14-MAY-18 16:34:00 to 14-MAY-18 16:34:00 (EST-5)
Location: MANNINGS
Magnitude: 1.75 
Reported by: Emergency Manager

Golf ball sized hail was reported. Wind blown hail damaged siding and windows.

Hail in JEFFERSON, WEST VIRGINIA
From 14-MAY-18 16:35:00 to 14-MAY-18 16:35:00 (EST-5)
Location: CHARLES TOWN
Magnitude: 1.00 
Reported by: Social Media

Quarter sized hail was reported.

Thunderstorm Wind in HAMPSHIRE, WEST VIRGINIA
From 14-MAY-18 15:30:00 to 14-MAY-18 15:30:00 (EST-5)
Location: HAMPSHIRE CLUB
Magnitude: 50.00 EG
Reported by: 911 Call Center

Trees and wires were down near S. Branch River Road and Hampshire Park Drive.

Thunderstorm Wind in JEFFERSON, WEST VIRGINIA
From 14-MAY-18 16:37:00 to 14-MAY-18 16:37:00 (EST-5)
Location: MANNINGS
Magnitude: 50.00 EG
Reported by: Emergency Manager

Many large trees were uprooted and snapped. Several fell into homes and over roads.