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.

Hail in FAIRFAX, VIRGINIA
From 18-JUN-15 16:10:00 to 18-JUN-15 16:10:00 (EST-5)
Location: OAKTON
Magnitude: 1.00 
Reported by: Public

Hail in FAIRFAX, VIRGINIA
From 18-JUN-15 16:00:00 to 18-JUN-15 16:00:00 (EST-5)
Location: FLORIS
Magnitude: 1.25 
Reported by: NWS Employee

Hail in FAIRFAX, VIRGINIA
From 18-JUN-15 15:59:00 to 18-JUN-15 15:59:00 (EST-5)
Location: PENDER
Magnitude: 1.00 
Reported by: Trained Spotter

Dime to quarter size hail at the intersection of Fairfax Cty Parkway and I-66.

Hail in FAIRFAX, VIRGINIA
From 18-JUN-15 16:12:00 to 18-JUN-15 16:12:00 (EST-5)
Location: BUFFS CORNER
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in FAIRFAX, VIRGINIA
From 18-JUN-15 16:04:00 to 18-JUN-15 16:04:00 (EST-5)
Location: VALE
Magnitude: 1.00 
Reported by: Trained Spotter

Reported near Jermantown Rd.

Hail in FAIRFAX, VIRGINIA
From 18-JUN-15 16:07:00 to 18-JUN-15 16:07:00 (EST-5)
Location: PENDER
Magnitude: 1.50 
Reported by: Trained Spotter

Spotter Id MO258, reported on Sweetleaf Terrace.

Hail in FAIRFAX, VIRGINIA
From 18-JUN-15 16:05:00 to 18-JUN-15 16:05:00 (EST-5)
Location: CHANTILLY
Magnitude: 2.00 
Reported by: Trained Spotter

Spotter Id Fxc09.

Hail in FAIRFAX, VIRGINIA
From 18-JUN-15 15:57:00 to 18-JUN-15 15:57:00 (EST-5)
Location: ELORIS
Magnitude: 1.50 
Reported by: Public

Hail in FAIRFAX, VIRGINIA
From 18-JUN-15 15:56:00 to 18-JUN-15 15:56:00 (EST-5)
Location: HERNDON
Magnitude: 1.25 
Reported by: Public

Thunderstorm Wind in FAIRFAX, VIRGINIA
From 18-JUN-15 16:00:00 to 18-JUN-15 16:00:00 (EST-5)
Location: SUNSET HILLS
Magnitude: 52.00 EG
Property damage: 1.00K
Reported by: Trained Spotter

A tree was reported down at South Lake Dr.

Thunderstorm Wind in FAIRFAX, VIRGINIA
From 18-JUN-15 15:55:00 to 18-JUN-15 15:55:00 (EST-5)
Location: FLORIS
Magnitude: 52.00 EG
Property damage: 1.00K
Reported by: NWS Employee

A large 8-inch tree branch and a small branch were reported down near the intersection of Franklin Farm Rd and Tranquility Ln.

Thunderstorm Wind in FAIRFAX, VIRGINIA
From 18-JUN-15 15:54:00 to 18-JUN-15 15:54:00 (EST-5)
Location: ELORIS
Magnitude: 52.00 EG
Property damage: 1.00K
Reported by: Public

Large branches and a tree were reported down on Fox Woods Dr.

Thunderstorm Wind in FAIRFAX, VIRGINIA
From 18-JUN-15 15:57:00 to 18-JUN-15 15:57:00 (EST-5)
Location: PENDER
Magnitude: 61.00 EG
Property damage: 3.00K
Reported by: Trained Spotter

Multiple trees and power lines were reported down in the Greenbriar East neighborhood. A fence was also blown over. Spotter ID Fxw108.

Thunderstorm Wind in FAIRFAX, VIRGINIA
From 18-JUN-15 15:57:00 to 18-JUN-15 15:57:00 (EST-5)
Location: SUNSET HILLS
Magnitude: 61.00 EG
Property damage: 5.00K
Reported by: Broadcast Media

Two different homes on Trotter Lane reported trees down on the respective house. Numerous trees were reported down elsewhere along the street. Reported by WTOP.

Thunderstorm Wind in FAIRFAX, VIRGINIA
From 19-JUN-15 00:30:00 to 19-JUN-15 00:30:00 (EST-5)
Location: CHANTILLY
Magnitude: 52.00 EG
Property damage: 1.00K
Reported by: Broadcast Media

A tree was reported down at the intersection of Route 28 and Westfields Blvd.

Thunderstorm Wind in FAIRFAX, VIRGINIA
From 18-JUN-15 16:02:00 to 18-JUN-15 16:02:00 (EST-5)
Location: LEGATO
Magnitude: 61.00 EG
Property damage: 4.00K
Reported by: Trained Spotter

The top half of a 60-foot Tulip Poplar Tree was snapped off, falling onto a house on Gunpowder Rd. Spotter ID FX011.

Thunderstorm Wind in FAIRFAX, VIRGINIA
From 18-JUN-15 16:08:00 to 18-JUN-15 16:08:00 (EST-5)
Location: OAKTON
Magnitude: 52.00 EG
Property damage: 1.00K
Reported by: Public

Two trees were reported down at the 10200 block of Rodgers Rd.

Thunderstorm Wind in LOUDOUN, VIRGINIA
From 18-JUN-15 15:50:00 to 18-JUN-15 15:50:00 (EST-5)
Location: DULLES INTL ARPT
Magnitude: 56.00 MG
Reported by: ASOS

Measured at Dulles International Airport KIAD.