A cold front combined with plenty of instability to trigger showers and thunderstorms. With plenty of instability and strong winds aloft, thunderstorms did become severe producing damaging winds and large hail.

Thunderstorm Wind in HOWARD, MARYLAND
From 29-MAY-09 13:27:00 to 29-MAY-09 13:27:00 (EST-5)
Location: FULTON
Magnitude: 50.00 EG
Reported by: Public

Several large branches were broken by thunderstorm winds.

Thunderstorm Wind in HOWARD, MARYLAND
From 29-MAY-09 13:27:00 to 29-MAY-09 13:27:00 (EST-5)
Location: HIGHLAND
Magnitude: 50.00 EG
Reported by: Public

Several mid-size branches were down from thunderstorm winds.

Thunderstorm Wind in ANNE ARUNDEL, MARYLAND
From 29-MAY-09 14:00:00 to 29-MAY-09 14:00:00 (EST-5)
Location: FERNDALE
Magnitude: 50.00 EG
Reported by: Fire Department/Rescue

Trees were down near Route 70 and Andover Road.

Hail in CHARLES, MARYLAND
From 29-MAY-09 16:43:00 to 29-MAY-09 16:43:00 (EST-5)
Location: NEWTOWN
Magnitude: 1.25 
Reported by: Trained Spotter

Half dollar size hail was reported just south of La Plata.

Hail in CHARLES, MARYLAND
From 29-MAY-09 16:41:00 to 29-MAY-09 16:41:00 (EST-5)
Location: PORT TOBACCO
Magnitude: 1.25 
Reported by: Trained Spotter

Half dollar size hail was reported near Port Tobacco.

Hail in CHARLES, MARYLAND
From 29-MAY-09 16:47:00 to 29-MAY-09 16:47:00 (EST-5)
Location: NEWTOWN
Magnitude: 0.75 
Reported by: Other Federal Agency

Penny size hail was reported near La Plata.

Thunderstorm Wind in MONTGOMERY, MARYLAND
From 29-MAY-09 12:27:00 to 29-MAY-09 12:27:00 (EST-5)
Location: POOLESVILLE
Magnitude: 50.00 EG
Reported by: Fire Department/Rescue

Trees and wires were down in Poolesville.

Thunderstorm Wind in ANNE ARUNDEL, MARYLAND
From 29-MAY-09 14:10:00 to 29-MAY-09 14:10:00 (EST-5)
Location: HERALD HARBOR
Magnitude: 50.00 EG
Reported by: Trained Spotter

Trees were down on homes in Herald Harbor.

Thunderstorm Wind in ANNE ARUNDEL, MARYLAND
From 29-MAY-09 14:20:00 to 29-MAY-09 14:20:00 (EST-5)
Location: REVELL
Magnitude: 50.00 EG
Reported by: Trained Spotter

A tree was down in Belvedere Heights.

Thunderstorm Wind in ANNE ARUNDEL, MARYLAND
From 29-MAY-09 14:20:00 to 29-MAY-09 14:20:00 (EST-5)
Location: ST MARGARETS
Magnitude: 50.00 EG
Reported by: Fire Department/Rescue

Trees were down near Forked Creek Road and Shore Acres.

Thunderstorm Wind in CHARLES, MARYLAND
From 29-MAY-09 16:39:00 to 29-MAY-09 16:39:00 (EST-5)
Location: MC CONCHIE
Magnitude: 50.00 EG
Reported by: Trained Spotter

Large branches were down.

Thunderstorm Wind in MONTGOMERY, MARYLAND
From 29-MAY-09 12:42:00 to 29-MAY-09 12:42:00 (EST-5)
Location: POOLESVILLE
Magnitude: 50.00 EG
Reported by: Fire Department/Rescue

Trees and wires were down.

Hail in ANNE ARUNDEL, MARYLAND
From 29-MAY-09 14:22:00 to 29-MAY-09 14:22:00 (EST-5)
Location: SEVERNA PARK
Magnitude: 0.75 
Reported by: Public

Penny size hail was reported near Severna Park.

Hail in ANNE ARUNDEL, MARYLAND
From 29-MAY-09 14:30:00 to 29-MAY-09 14:30:00 (EST-5)
Location: ST MARGARETS
Magnitude: 0.88 
Reported by: Public

Nickel size hail was reported near Arnold.

Hail in CHARLES, MARYLAND
From 29-MAY-09 16:39:00 to 29-MAY-09 16:39:00 (EST-5)
Location: MC CONCHIE
Magnitude: 1.00 
Reported by: Trained Spotter

Quarter size hail was reported near Ripley.

Hail in CHARLES, MARYLAND
From 29-MAY-09 16:41:00 to 29-MAY-09 16:41:00 (EST-5)
Location: PORT TOBACCO
Magnitude: 0.88 
Reported by: Trained Spotter

Nickel size hail was reported near Port Tobacco.

Hail in CHARLES, MARYLAND
From 29-MAY-09 16:48:00 to 29-MAY-09 16:48:00 (EST-5)
Location: ALLENS FRESH
Magnitude: 0.75 
Reported by: Trained Spotter

Penny size hail was reported just southeast of Faulkner.