The Mid-Atlantic remained in the warm sector as a nearly stalled warm front lingered just north of the Mason-Dixon line and the associated cold front swung in from the west by the evening. The unstable air mass led to SBCAPE values between 2000-3500 J/kg while effective shear values were between 30-40 knots.

Thunderstorm Wind in CHARLES, MARYLAND
From 18-JUN-15 16:48:00 to 18-JUN-15 16:48:00 (EST-5)
Location: ST CHARLES
Magnitude: 52.00 EG
Property damage: 1.00K
Reported by: 911 Call Center

A tree was reported down near the intersection of St Charles Parkway and Dartmouth Rd.

Hail in MONTGOMERY, MARYLAND
From 18-JUN-15 15:10:00 to 18-JUN-15 15:10:00 (EST-5)
Location: DAVIS ARPT
Magnitude: 1.00 
Reported by: SHAVE Project

Hail in MONTGOMERY, MARYLAND
From 18-JUN-15 15:11:00 to 18-JUN-15 15:11:00 (EST-5)
Location: DAVIS ARPT
Magnitude: 1.00 
Reported by: SHAVE Project

Hail in MONTGOMERY, MARYLAND
From 18-JUN-15 15:22:00 to 18-JUN-15 15:22:00 (EST-5)
Location: DAVIS ARPT
Magnitude: 1.50 
Reported by: SHAVE Project

Thunderstorm Wind in FREDERICK, MARYLAND
From 18-JUN-15 15:10:00 to 18-JUN-15 15:10:00 (EST-5)
Location: BUCKEYSTOWN
Magnitude: 52.00 EG
Property damage: 2.00K
Reported by: Trained Spotter

A couple  of trees reported down onto power lines near the intersection of Fingerboard Rd and Baker Valley Rd. Spotter ID FK069.

Thunderstorm Wind in PRINCE GEORGE'S, MARYLAND
From 18-JUN-15 15:57:00 to 18-JUN-15 15:57:00 (EST-5)
Location: ADELPHI
Magnitude: 52.00 EG
Property damage: 2.00K
Reported by: 911 Call Center

A tree was reported down on Phoebe Lane.

Thunderstorm Wind in ANNE ARUNDEL, MARYLAND
From 18-JUN-15 16:31:00 to 18-JUN-15 16:31:00 (EST-5)
Location: BRISTOL
Magnitude: 61.00 EG
Property damage: 3.00K
Reported by: 911 Call Center

Numerous trees reported down between Lower Pindell Rd and Upper Pindell Rd.

Thunderstorm Wind in ANNE ARUNDEL, MARYLAND
From 18-JUN-15 16:33:00 to 18-JUN-15 16:33:00 (EST-5)
Location: BRISTOL
Magnitude: 60.00 EG
Property damage: 1.00K
Reported by: 911 Call Center

Numerous trees reported down at the intersection of Route 4 and Upper Pindell Rd.

Thunderstorm Wind in ANNE ARUNDEL, MARYLAND
From 18-JUN-15 16:32:00 to 18-JUN-15 16:32:00 (EST-5)
Location: LYONS CREEK
Magnitude: 52.00 EG
Property damage: 1.00K
Reported by: 911 Call Center

Multiple trees were reported down at Mallard Lane and Lower Pindell Rd.

Thunderstorm Wind in ALLEGANY, MARYLAND
From 18-JUN-15 22:25:00 to 18-JUN-15 22:25:00 (EST-5)
Location: MT SAVAGE
Magnitude: 52.00 EG
Property damage: 1.00K
Reported by: 911 Call Center

A large tree was reported down across New School Rd.

Thunderstorm Wind in MONTGOMERY, MARYLAND
From 18-JUN-15 15:43:00 to 18-JUN-15 15:43:00 (EST-5)
Location: CARDEROCK SPGS
Magnitude: 52.00 EG
Property damage: 2.00K
Reported by: Emergency Manager

Multiple trees were reported down at the 7900 block of Bradley Blvd.

Thunderstorm Wind in CALVERT, MARYLAND
From 18-JUN-15 16:41:00 to 18-JUN-15 16:41:00 (EST-5)
Location: CHANEYVILLE
Magnitude: 52.00 EG
Property damage: 1.00K
Reported by: 911 Call Center

Multiple trees down at the 2600 block Dogwood Lane.

Thunderstorm Wind in MONTGOMERY, MARYLAND
From 18-JUN-15 15:29:00 to 18-JUN-15 15:29:00 (EST-5)
Location: UNITY
Magnitude: 52.00 EG
Property damage: 1.00K
Reported by: 911 Call Center

A large tree was reported down along the 22200 block of Georgia Ave.

Thunderstorm Wind in MONTGOMERY, MARYLAND
From 18-JUN-15 15:46:00 to 18-JUN-15 15:46:00 (EST-5)
Location: WHITE OAK
Magnitude: 52.00 EG
Property damage: 1.00K
Reported by: 911 Call Center

Multiple trees were reported down near the 11200 block of Columbia Pike.

Thunderstorm Wind in CALVERT, MARYLAND
From 18-JUN-15 16:56:00 to 18-JUN-15 16:56:00 (EST-5)
Location: DARES BEACH
Magnitude: 52.00 EG
Property damage: 3.00K
Reported by: 911 Call Center

Multiple trees were reported down on power lines at the intersection of Huntsman Dr and Wilson Rd.

Thunderstorm Wind in CALVERT, MARYLAND
From 18-JUN-15 16:45:00 to 18-JUN-15 16:45:00 (EST-5)
Location: HUNTINGTOWN
Magnitude: 52.00 EG
Property damage: 1.00K
Reported by: 911 Call Center

A tree was reported down at 900 block of Warner Dr.

Thunderstorm Wind in CALVERT, MARYLAND
From 18-JUN-15 16:45:00 to 18-JUN-15 16:45:00 (EST-5)
Location: SUNDERLAND
Magnitude: 52.00 EG
Property damage: 1.00K
Reported by: 911 Call Center

A tree was reported down at the 200 block of Amber Lane.

Thunderstorm Wind in CALVERT, MARYLAND
From 18-JUN-15 17:19:00 to 18-JUN-15 17:19:00 (EST-5)
Location: ADELINA
Magnitude: 52.00 EG
Property damage: 1.00K
Reported by: 911 Call Center

A tree was reported down at the intersection of Sheridan Point Rd and Adelina Rd.

Thunderstorm Wind in CALVERT, MARYLAND
From 18-JUN-15 16:39:00 to 18-JUN-15 16:39:00 (EST-5)
Location: OWINGS
Magnitude: 52.00 EG
Property damage: 1.00K
Reported by: 911 Call Center

A tree was reported down at the 9000 block of Cabin Court.

Thunderstorm Wind in ST. MARY'S, MARYLAND
From 18-JUN-15 17:16:00 to 18-JUN-15 17:16:00 (EST-5)
Location: GOLDEN BEACH
Magnitude: 52.00 EG
Property damage: 2.00K
Reported by: Social Media

Multiple trees were reported down on a car port and on power lines. Reported via NWS employee via picture on Facebook.

Thunderstorm Wind in CALVERT, MARYLAND
From 18-JUN-15 16:34:00 to 18-JUN-15 16:34:00 (EST-5)
Location: CHANEY
Magnitude: 52.00 EG
Property damage: 1.00K
Reported by: 911 Call Center

Multiple trees were reported down at the intersection of Chaney Rd and Southern Maryland Blvd.

Thunderstorm Wind in CALVERT, MARYLAND
From 18-JUN-15 16:33:00 to 18-JUN-15 16:33:00 (EST-5)
Location: CHANEY
Magnitude: 52.00 EG
Property damage: 1.00K
Reported by: 911 Call Center

A tree was reported down at Hickory Ridge Rd and Southern Maryland Blvd.

Thunderstorm Wind in CALVERT, MARYLAND
From 18-JUN-15 16:50:00 to 18-JUN-15 16:50:00 (EST-5)
Location: PARRAN
Magnitude: 52.00 EG
Property damage: 1.00K
Reported by: 911 Call Center

A tree was reported down at the intersection of Hardesty Rd and Hardesty Court.

Thunderstorm Wind in CALVERT, MARYLAND
From 18-JUN-15 16:36:00 to 18-JUN-15 16:36:00 (EST-5)
Location: CHANEY
Magnitude: 52.00 EG
Property damage: 1.00K
Reported by: 911 Call Center

A tree was reported down at the 1700 block of Southern Plantation Dr.

Thunderstorm Wind in CALVERT, MARYLAND
From 18-JUN-15 16:42:00 to 18-JUN-15 16:42:00 (EST-5)
Location: SUNDERLAND
Magnitude: 52.00 EG
Property damage: 1.00K
Reported by: 911 Call Center

A tree was reported down at the 6800 block of Kent Rd.

Thunderstorm Wind in CALVERT, MARYLAND
From 18-JUN-15 16:38:00 to 18-JUN-15 16:38:00 (EST-5)
Location: CHANEY
Magnitude: 52.00 EG
Property damage: 1.00K
Reported by: 911 Call Center

A tree was reported down at the 10800 block of Ward Rd.

Thunderstorm Wind in CALVERT, MARYLAND
From 18-JUN-15 16:37:00 to 18-JUN-15 16:37:00 (EST-5)
Location: CHANEY
Magnitude: 52.00 EG
Property damage: 1.00K
Reported by: 911 Call Center

Multiple trees were reported down at the intersection of West Chesapeake Beach Rd and Brickhouse Rd.

Thunderstorm Wind in CHARLES, MARYLAND
From 18-JUN-15 16:49:00 to 18-JUN-15 16:49:00 (EST-5)
Location: BEANTOWN
Magnitude: 52.00 EG
Property damage: 1.00K
Reported by: 911 Call Center

A tree was reported down at the intersection of Willowview Place and Lakewood Place.

Thunderstorm Wind in CHARLES, MARYLAND
From 18-JUN-15 16:39:00 to 18-JUN-15 16:39:00 (EST-5)
Location: MATTAWOMAN
Magnitude: 52.00 EG
Property damage: 1.00K
Reported by: 911 Call Center

A tree was reported down on Hope Circle.

Thunderstorm Wind in CHARLES, MARYLAND
From 18-JUN-15 16:42:00 to 18-JUN-15 16:42:00 (EST-5)
Location: MATTAWOMAN
Magnitude: 52.00 EG
Property damage: 1.00K
Reported by: 911 Call Center

A tree was reported down at the intersection of Josephine Rd and Pinefield Rd.

Thunderstorm Wind in CHARLES, MARYLAND
From 18-JUN-15 17:07:00 to 18-JUN-15 17:07:00 (EST-5)
Location: LOVES
Magnitude: 52.00 EG
Property damage: 1.00K
Reported by: 911 Call Center

A tree was reported down on Teaques Point Rd near Prince Frederick Rd.

Thunderstorm Wind in FREDERICK, MARYLAND
From 18-JUN-15 15:00:00 to 18-JUN-15 15:00:00 (EST-5)
Location: URBANA
Magnitude: 51.00 MG
Reported by: Mesonet

Reported at Frdfm.

Thunderstorm Wind in FREDERICK, MARYLAND
From 18-JUN-15 14:59:00 to 18-JUN-15 14:59:00 (EST-5)
Location: URBANA
Magnitude: 50.00 MG
Reported by: Mesonet

Reported at Urbnn.

Thunderstorm Wind in CHARLES, MARYLAND
From 18-JUN-15 16:48:00 to 18-JUN-15 16:48:00 (EST-5)
Location: ST CHARLES
Magnitude: 52.00 EG
Property damage: 1.00K
Reported by: 911 Call Center

A tree was reported down near the intersection of St Charles Parkway and Smallwood Rd.

Thunderstorm Wind in MONTGOMERY, MARYLAND
From 18-JUN-15 15:43:00 to 18-JUN-15 15:43:00 (EST-5)
Location: HOLLYWOOD PARK
Magnitude: 52.00 EG
Property damage: 2.00K
Reported by: 911 Call Center

A tree was reported down on power lines near the 12400 block of Eastbourne Dr.

Thunderstorm Wind in CALVERT, MARYLAND
From 18-JUN-15 16:51:00 to 18-JUN-15 16:51:00 (EST-5)
Location: PARRAN
Magnitude: 52.00 EG
Property damage: 1.00K
Reported by: 911 Call Center

A tree was reported down at the intersection of Plum Point Rd and Cox Rd.

Thunderstorm Wind in CALVERT, MARYLAND
From 18-JUN-15 16:40:00 to 18-JUN-15 16:40:00 (EST-5)
Location: CHANEYVILLE
Magnitude: 52.00 EG
Property damage: 1.00K
Reported by: 911 Call Center

A tree was reported down at the intersection of Timberneck Dr and Briscoe Turn Rd.