A cold front approached the Mid Atlantic while a surface trough was located across the Potomac Highlands. Southerly flow ahead of both features led to humid and warm conditions across the region. Showers and thunderstorms formed in vicinity of the surface trough and moved eastward. Some storms became severe producing damaging winds and large hail.

Thunderstorm Wind in CARROLL, MARYLAND
From 09-JUL-14 14:15:00 to 09-JUL-14 14:15:00 (EST-5)
Location: NEW WINDSOR
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Power lines were down from strong winds on MD-31 at Slingluff Road.

Thunderstorm Wind in CARROLL, MARYLAND
From 09-JUL-14 14:42:00 to 09-JUL-14 14:42:00 (EST-5)
Location: CEDARHURST
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.50K
Reported by: 911 Call Center

There were trees down at Sandymount Elementary School.

Thunderstorm Wind in BALTIMORE, MARYLAND
From 09-JUL-14 15:02:00 to 09-JUL-14 15:02:00 (EST-5)
Location: SHAWAN
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 1.00K
Reported by: Law Enforcement

There were four large trees 3-4 feet in diameter uprooted and topped on Falls Road.

Thunderstorm Wind in BALTIMORE, MARYLAND
From 09-JUL-14 15:05:00 to 09-JUL-14 15:05:00 (EST-5)
Location: OREGON
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.25K
Reported by: Broadcast Media

There was a tree reported down on Interstate 83 Southbound near Shawan Road.

Thunderstorm Wind in HARFORD, MARYLAND
From 09-JUL-14 15:32:00 to 09-JUL-14 15:32:00 (EST-5)
Location: VALE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.25K
Reported by: NWS Employee

There were large tree branches down.

Thunderstorm Wind in HARFORD, MARYLAND
From 09-JUL-14 15:34:00 to 09-JUL-14 15:34:00 (EST-5)
Location: BAGLEY
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.25K
Reported by: Trained Spotter

There were several large limbs down.

Thunderstorm Wind in CHARLES, MARYLAND
From 09-JUL-14 16:55:00 to 09-JUL-14 16:55:00 (EST-5)
Location: POMFRET
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.25K
Reported by: 911 Call Center

There were trees and wires down along Marshall Corner Road.

Hail in CARROLL, MARYLAND
From 09-JUL-14 14:18:00 to 09-JUL-14 14:18:00 (EST-5)
Location: NEW WINDSOR
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in CARROLL, MARYLAND
From 09-JUL-14 14:40:00 to 09-JUL-14 14:40:00 (EST-5)
Location: FINKSBURG
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.25K
Reported by: Public

There was a tree reported down near Finksburg.

Thunderstorm Wind in BALTIMORE, MARYLAND
From 09-JUL-14 15:05:00 to 09-JUL-14 15:05:00 (EST-5)
Location: HUNT VLY
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.25K
Reported by: Public

There was a tree reported down in a parking lot in Hunt Valley.

Thunderstorm Wind in BALTIMORE, MARYLAND
From 09-JUL-14 15:09:00 to 09-JUL-14 15:09:00 (EST-5)
Location: JACKSONVILLE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.25K
Reported by: Broadcast Media

There was a tree reported down blocking Jarrettsville Pike near Paper Mill Road.

Thunderstorm Wind in BALTIMORE, MARYLAND
From 09-JUL-14 15:11:00 to 09-JUL-14 15:11:00 (EST-5)
Location: SWEET AIR
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.25K
Reported by: Public

There was a 12 inch in diameter tree snapped near Phoenix.

Thunderstorm Wind in ST. MARY'S, MARYLAND
From 09-JUL-14 17:32:00 to 09-JUL-14 17:32:00 (EST-5)
Location: OAKS
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.25K
Reported by: Airplane Pilot

There was a tree down on Mount Wolf Road.

Thunderstorm Wind in ST. MARY'S, MARYLAND
From 09-JUL-14 18:08:00 to 09-JUL-14 18:08:00 (EST-5)
Location: (NHK)NAS PATUXENT RI
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.25K
Reported by: Storm Chaser

There were large limbs down on Patuxent River Naval Air Station and winds were estimated at 50 mph.