A cold front approached from the west during the day of July 11th, with warm and moist air advection occurring on southerly flow. This promoted the development of significant amounts of instability, and that coupled with an approaching shortwave trough and modest shear values, led to the generation of scattered showers and thunderstorms, some of which became severe.

Thunderstorm Wind in BALTIMORE, MARYLAND
From 11-JUL-19 15:45:00 to 11-JUL-19 15:45:00 (EST-5)
Location: PERRY HALL
Magnitude: 61.00 EG
Reported by: State Official

Multiple power poles were blown down in the 4000 block of Chapel Road.

Thunderstorm Wind in HARFORD, MARYLAND
From 11-JUL-19 15:54:00 to 11-JUL-19 15:54:00 (EST-5)
Location: JOPPA
Magnitude: 50.00 EG
Reported by: State Official

A tree was blown down onto power lines in the 100 block of Philadelphia Road. A tree was blown down across MD-7 near Joppa Farm Road.

Thunderstorm Wind in HARFORD, MARYLAND
From 11-JUL-19 15:56:00 to 11-JUL-19 15:56:00 (EST-5)
Location: LAUREL BROOK
Magnitude: 50.00 EG
Reported by: State Official

A tree was blown down across the roadway near the intersection of Guyton Road and Bottom Road just before the bridge. A large 8-inch diameter tree limb was blown near the intersection of Old Joppa Road and Old Mountain Road North.

Thunderstorm Wind in HARFORD, MARYLAND
From 11-JUL-19 15:58:00 to 11-JUL-19 15:58:00 (EST-5)
Location: CHURCHVILLE
Magnitude: 50.00 EG
Reported by: County Official

A large tree was blown down in the 500 block of Bryarly Court.

Thunderstorm Wind in HARFORD, MARYLAND
From 11-JUL-19 16:15:00 to 11-JUL-19 16:15:00 (EST-5)
Location: ALDINO
Magnitude: 61.00 EG
Reported by: State Official

Several trees were blown down onto Wesleyan Road near the intersection of North Paradise Road. Several trees were also blown down in the 3900 block of West Chapel Road.

Thunderstorm Wind in PRINCE GEORGE'S, MARYLAND
From 11-JUL-19 15:10:00 to 11-JUL-19 15:10:00 (EST-5)
Location: GREENBELT
Magnitude: 50.00 EG
Reported by: County Official

A couple of trees and several large branches were blown down in the Berwyn Heights area.

Thunderstorm Wind in MONTGOMERY, MARYLAND
From 11-JUL-19 14:59:00 to 11-JUL-19 14:59:00 (EST-5)
Location: TAKOMA PARK
Magnitude: 50.00 EG
Reported by: Emergency Manager

A tree was blown down onto a house in the 6700 block of Prince Georges Avenue. Trees were also blown down on wires near the intersection of Piney Branch Road and Philadelphia Avenue.

Thunderstorm Wind in HARFORD, MARYLAND
From 11-JUL-19 15:15:00 to 11-JUL-19 15:15:00 (EST-5)
Location: BAGLEY
Magnitude: 50.00 EG
Reported by: State Official

A tree was blown down in the 2300 block of Dunwood Lane. A tree was also blown down near the intersection of Old Joppa Road and Woodtaker Mill Road.

Thunderstorm Wind in HARFORD, MARYLAND
From 11-JUL-19 16:03:00 to 11-JUL-19 16:03:00 (EST-5)
Location: GLENWOOD
Magnitude: 50.00 EG
Reported by: State Official

A tree was blown down blocking the 1300 block of East MacPhail Road. A tree was also blown down into wires and into water near the intersection of MD-543 and Wheel Road East.

Thunderstorm Wind in MONTGOMERY, MARYLAND
From 11-JUL-19 14:53:00 to 11-JUL-19 14:53:00 (EST-5)
Location: BYFORDE
Magnitude: 50.00 EG
Reported by: Emergency Manager

A tree was blown down onto a house in the 9200 block of Levelle Drive. A tree was also blown down onto wires near the intersection of Blaine Drive and Grubb Road.

Thunderstorm Wind in ALLEGANY, MARYLAND
From 11-JUL-19 13:23:00 to 11-JUL-19 13:23:00 (EST-5)
Location: EVITTS CREEK
Magnitude: 50.00 EG
Reported by: State Official

A tree was blown down near the intersection of West Elder Street and Canal Parkway.

Thunderstorm Wind in ALLEGANY, MARYLAND
From 11-JUL-19 13:33:00 to 11-JUL-19 13:33:00 (EST-5)
Location: KINGS GROVE
Magnitude: 50.00 EG
Reported by: State Official

A tree was blown down along Valley Road Northeast just south of the Mason-Dixon Line.

Thunderstorm Wind in HARFORD, MARYLAND
From 11-JUL-19 15:58:00 to 11-JUL-19 15:58:00 (EST-5)
Location: PLEASANTVILLE
Magnitude: 50.00 EG
Reported by: State Official

A tree was blown down near the intersection of Pleasantville Road and High Point Road.

Thunderstorm Wind in CHARLES, MARYLAND
From 11-JUL-19 16:25:00 to 11-JUL-19 16:25:00 (EST-5)
Location: MARBURY
Magnitude: 50.00 EG
Reported by: State Official

A tree was blown down in Marbury.

Thunderstorm Wind in HARFORD, MARYLAND
From 11-JUL-19 16:25:00 to 11-JUL-19 16:25:00 (EST-5)
Location: OSBORNE
Magnitude: 50.00 EG
Reported by: State Official

A tree limb was blown down onto power lines blocking the roadway in the 100 block of Old Bay Lane.

Thunderstorm Wind in ST. MARY'S, MARYLAND
From 11-JUL-19 17:34:00 to 11-JUL-19 17:34:00 (EST-5)
Location: OAKS
Magnitude: 50.00 EG
Reported by: State Official

A tree was blown down near the intersection of Indian Creek Drive and Cheyenne Court.

Thunderstorm Wind in CALVERT, MARYLAND
From 11-JUL-19 17:46:00 to 11-JUL-19 17:46:00 (EST-5)
Location: PARRAN
Magnitude: 50.00 EG
Reported by: State Official

A tree was blown down on Plum Point Road.