On July 17th, the remnant circulation of Barry moved into Pennsylvania with a surface pressure trough out ahead of it over the Mid-Atlantic. Out ahead of the circulation, a hot, humid, and unstable air mass was in place, and this helped to initiate scattered to numerous showers and thunderstorms in the afternoon. Some of these thunderstorms became strong to locally severe.

Thunderstorm Wind in RAPPAHANNOCK, VIRGINIA
From 17-JUL-19 14:50:00 to 17-JUL-19 14:50:00 (EST-5)
Location: CHESTER GAP
Magnitude: 50.00 EG
Reported by: State Official

Two reports of trees down in Chester Gap were received.

Thunderstorm Wind in LOUDOUN, VIRGINIA
From 17-JUL-19 15:19:00 to 17-JUL-19 15:19:00 (EST-5)
Location: UNISON
Magnitude: 50.00 EG
Reported by: State Official

A tree was blown down on St. Louis Road.

Thunderstorm Wind in FAUQUIER, VIRGINIA
From 17-JUL-19 15:31:00 to 17-JUL-19 15:31:00 (EST-5)
Location: REMINGTON
Magnitude: 50.00 EG
Reported by: State Official

Large tree limbs were reported down blocking Freemans Ford Road.

Thunderstorm Wind in FAUQUIER, VIRGINIA
From 17-JUL-19 15:36:00 to 17-JUL-19 15:36:00 (EST-5)
Location: WARRENTON
Magnitude: 50.00 EG
Reported by: State Official

Multiple trees were reported down in the Warrenton area.

Thunderstorm Wind in LOUDOUN, VIRGINIA
From 17-JUL-19 15:36:00 to 17-JUL-19 15:36:00 (EST-5)
Location: LEESBURG
Magnitude: 50.00 EG
Reported by: Broadcast Media

A tree was blown down on VA-7 eastbound before US-15.

Thunderstorm Wind in FAUQUIER, VIRGINIA
From 17-JUL-19 15:40:00 to 17-JUL-19 15:40:00 (EST-5)
Location: CATLETT
Magnitude: 50.00 EG
Reported by: State Official

A tree was blown down on Old Dumfries Road.

Thunderstorm Wind in FAIRFAX, VIRGINIA
From 17-JUL-19 15:55:00 to 17-JUL-19 15:55:00 (EST-5)
Location: BULL RUN
Magnitude: 50.00 EG
Reported by: State Official

Compton Road at Bull Run Post Office Road was partially blocked due to a downed tree.

Thunderstorm Wind in FAIRFAX, VIRGINIA
From 17-JUL-19 15:57:00 to 17-JUL-19 15:57:00 (EST-5)
Location: BULL RUN
Magnitude: 61.00 EG
Reported by: State Official

A downed tree was blocking the roadway in the 15000 block of Compton Road. Lee Highway at White Post Road was also partially blocked due to a downed tree.

Thunderstorm Wind in FAIRFAX, VIRGINIA
From 17-JUL-19 16:04:00 to 17-JUL-19 16:04:00 (EST-5)
Location: CHANTILLY
Magnitude: 50.00 EG
Reported by: State Official

The 14000 block of Conference Center Drive was partially blocked due to a downed tree.

Thunderstorm Wind in PRINCE WILLIAM, VIRGINIA
From 17-JUL-19 16:12:00 to 17-JUL-19 16:12:00 (EST-5)
Location: DALE CITY
Magnitude: 50.00 EG
Reported by: Trained Spotter

Multiple trees were blown down in the Montclair area.

Thunderstorm Wind in FAIRFAX, VIRGINIA
From 17-JUL-19 16:14:00 to 17-JUL-19 16:14:00 (EST-5)
Location: PENDER
Magnitude: 61.00 EG
Reported by: State Official

Multiple trees were reported down in the Fair Oaks area.

Thunderstorm Wind in ALBEMARLE, VIRGINIA
From 17-JUL-19 14:14:00 to 17-JUL-19 14:14:00 (EST-5)
Location: CROZET
Magnitude: 50.00 EG
Reported by: Public

Multiple trees were blown down in Crozet.

Thunderstorm Wind in ALBEMARLE, VIRGINIA
From 17-JUL-19 14:30:00 to 17-JUL-19 14:30:00 (EST-5)
Location: EARLYSVILLE
Magnitude: 61.00 EG
Reported by: Trained Spotter

Multiple trees were blown down in the Hickory Ridge Farm neighborhood. A tree was also blown down at the intersection of Markwood Road and Buck Mountain Road. A tree was blown down at the intersection of Markwood Road and Flintrock Way. Another tree was blown down near the intersection of Thomfordson Lane and Advance Mills Road.

Thunderstorm Wind in FAIRFAX, VIRGINIA
From 17-JUL-19 16:15:00 to 17-JUL-19 16:15:00 (EST-5)
Location: CROWELLS CORNER
Magnitude: 50.00 EG
Reported by: NWS Employee

Several trees were blown down alongside VA-267 Dulles Toll Road between Wolf Trap and Reston.

Thunderstorm Wind in FAIRFAX, VIRGINIA
From 17-JUL-19 16:17:00 to 17-JUL-19 16:17:00 (EST-5)
Location: MERRIFIELD
Magnitude: 50.00 EG
Reported by: Law Enforcement

A tree was blown down blocking the 3700 block of Prosperity Avenue.

Thunderstorm Wind in FAIRFAX, VIRGINIA
From 17-JUL-19 16:23:00 to 17-JUL-19 16:23:00 (EST-5)
Location: LORTON
Magnitude: 61.00 EG
Reported by: State Official

Multiple trees were blown down in West Springfield. Multiple trees were also blown down in the Franconia area.

Thunderstorm Wind in FAIRFAX, VIRGINIA
From 17-JUL-19 16:23:00 to 17-JUL-19 16:23:00 (EST-5)
Location: SWINKS MILL
Magnitude: 50.00 EG
Reported by: Law Enforcement

Three reports of trees down in McLean were received.

Thunderstorm Wind in FAIRFAX, VIRGINIA
From 17-JUL-19 16:28:00 to 17-JUL-19 16:28:00 (EST-5)
Location: NEW ALEXANDRIA
Magnitude: 50.00 EG
Reported by: Broadcast Media

A tree was blown down on George Washington Memorial Parkway after Tulane Drive.

Thunderstorm Wind in FAIRFAX, VIRGINIA
From 17-JUL-19 16:26:00 to 17-JUL-19 16:26:00 (EST-5)
Location: COLCHESTER
Magnitude: 52.00 MG
Reported by: Mesonet

A wind gust to 52 knots (60 mph) was measured near Occoquan.