A nearly stationary boundary set up near the Potomac River weak low pressure developed along the boundary. There was plenty of moisture in place from the Atlantic and Gulf of Mexico, and this combined with instability to produce very heavy rainfall rates in convection that developed. Convection was maximized around the boundary across northern Virginia near the Potomac River, and this led to several instances of flooding and flash flooding.

Flash Flood in ALEXANDRIA (C), VIRGINIA
From 08-JUL-19 08:38:00 to 08-JUL-19 10:26:00 (EST-5)
Location: ALEXANDRIA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The water level at Cameron Run rapidly rose above flood stage of 11 feet. The water level crested at 15.7 feet at 9:40 AM EST. Most of Lower Holes Run Trail along Cameron Run was flooded, and backwater flooded areas along Backlick Run upstream of Cameron Run.

Flash Flood in ARLINGTON, VIRGINIA
From 08-JUL-19 09:00:00 to 08-JUL-19 12:00:00 (EST-5)
Location: ARLINGTON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A steel and concrete pedestrian bridge was washed away along Four Mile Run in Bluemont Park.

Flash Flood in FAIRFAX, VIRGINIA
From 08-JUL-19 09:01:00 to 08-JUL-19 11:53:00 (EST-5)
Location: MERRIFIELD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

Accotink Creek rapidly rose above flood stage of 9.5 feet. Woodburn Road and Prosperity Avenue were flooded at Accotink Creek. Water reached the outbuilding near Braddock Road and it covered ballfields at Wakefield Park.

Flood in FAIRFAX, VIRGINIA
From 08-JUL-19 11:53:00 to 08-JUL-19 14:33:00 (EST-5)
Location: MERRIFIELD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

Accotink Creek crested at 12.61 feet at 12:30 PM EST. Woodburn Road and Prosperity Avenue were flooded at Accotink Creek. Water reached the outbuilding near Braddock Road and it covered ballfields at Wakefield Park.

Flash Flood in FAIRFAX, VIRGINIA
From 08-JUL-19 09:15:00 to 08-JUL-19 12:00:00 (EST-5)
Location: VALE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Waples Mill Road was closed due to flooding near the intersection with Oakton Road.

Flash Flood in FAIRFAX, VIRGINIA
From 08-JUL-19 09:15:00 to 08-JUL-19 12:00:00 (EST-5)
Location: DUNN LORING
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hilltop Road was closed due to flooding between Willomere Drive and Old Lee Highway.

Flash Flood in FAIRFAX, VIRGINIA
From 08-JUL-19 09:15:00 to 08-JUL-19 12:15:00 (EST-5)
Location: CHESTERBROOK GARDENS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Shreve Road was closed due to flooding between Wieland Place and Buckelew Drive.

Flash Flood in FAIRFAX, VIRGINIA
From 08-JUL-19 09:15:00 to 08-JUL-19 12:15:00 (EST-5)
Location: CHESTERBROOK WOODS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Dempsey Street was closed due to flooding near the intersection with Old Chesterbrook Road.

Flash Flood in FAIRFAX, VIRGINIA
From 08-JUL-19 09:15:00 to 08-JUL-19 12:15:00 (EST-5)
Location: KENMORE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Old Courthouse Road was closed due to flooding near the intersection with Besley Road.

Flash Flood in FAIRFAX, VIRGINIA
From 08-JUL-19 09:15:00 to 08-JUL-19 12:15:00 (EST-5)
Location: CLARKS CROSSING
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hunter Mill Road was closed due to flooding between Cedar Pond Drive and Hunter Station Road.

Flash Flood in FAIRFAX, VIRGINIA
From 08-JUL-19 09:15:00 to 08-JUL-19 12:15:00 (EST-5)
Location: CROWELLS CORNER
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Browns Mill Road was closed due to flooding between Windstone Drive and Rosewood Hill Drive.

Flash Flood in FAIRFAX, VIRGINIA
From 08-JUL-19 09:15:00 to 08-JUL-19 12:15:00 (EST-5)
Location: KENMORE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Meadowlark Road was closed due to flooding near the intersection with Brookside Lane.

Flash Flood in FAIRFAX, VIRGINIA
From 08-JUL-19 09:15:00 to 08-JUL-19 12:15:00 (EST-5)
Location: SUNSET HILLS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Sunset Hills Road was closed due to flooding near the intersection with Metro Center Drive.

Flash Flood in FAIRFAX, VIRGINIA
From 08-JUL-19 09:15:00 to 08-JUL-19 12:15:00 (EST-5)
Location: SWINKS MILL
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

One lane of Georgetown Pike was closed due to flooding near the intersection with Potomac River Road.

Flash Flood in FAIRFAX, VIRGINIA
From 08-JUL-19 09:15:00 to 08-JUL-19 12:15:00 (EST-5)
Location: RESTON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Colvin Run Road was closed due to flooding at Leesburg Pike.

Flash Flood in FAIRFAX, VIRGINIA
From 08-JUL-19 09:15:00 to 08-JUL-19 12:15:00 (EST-5)
Location: ELKINS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Walker Road was closed due to flooding between Sunnybrook Drive and Manning Street.

Flash Flood in FAIRFAX, VIRGINIA
From 08-JUL-19 09:15:00 to 08-JUL-19 12:15:00 (EST-5)
Location: RESTON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Springvale Road was closed due to flooding between Brevity Drive and Springvale Court.

Flood in FAIRFAX, VIRGINIA
From 08-JUL-19 07:42:00 to 08-JUL-19 10:42:00 (EST-5)
Location: CROWELLS CORNER
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hunter Mill Road was closed due to flooding under the Dulles Toll Road.

Flood in FAIRFAX, VIRGINIA
From 08-JUL-19 08:56:00 to 08-JUL-19 11:56:00 (EST-5)
Location: HERNDON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Sugarland Run was out of its banks with flooding near the Stuart Woods Apartments.

Flash Flood in FAIRFAX, VIRGINIA
From 08-JUL-19 09:15:00 to 08-JUL-19 12:00:00 (EST-5)
Location: ENGLESIDE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The southbound Lane of Richmond Highway was closed due to flooding.

Flash Flood in FAIRFAX, VIRGINIA
From 08-JUL-19 09:15:00 to 08-JUL-19 12:00:00 (EST-5)
Location: WELLINGTON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Paul Spring Road was closed due to flooding near the intersection with Fort Hunt Road. .

Flash Flood in FAIRFAX, VIRGINIA
From 08-JUL-19 09:15:00 to 08-JUL-19 12:00:00 (EST-5)
Location: TREMONT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Woodburn Road was closed due to flooding near the intersection with Robey Avenue.

Flash Flood in FAIRFAX, VIRGINIA
From 08-JUL-19 09:15:00 to 08-JUL-19 12:00:00 (EST-5)
Location: MERRIFIELD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Prosperity Road was closed due to flooding near the intersection with Morningside Drive.

Flash Flood in FAIRFAX, VIRGINIA
From 08-JUL-19 09:15:00 to 08-JUL-19 12:00:00 (EST-5)
Location: CULMORE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Holmes Run road was closed due to flooding near the intersection with Cedarwood Drive.

Flash Flood in FAIRFAX, VIRGINIA
From 08-JUL-19 10:37:00 to 08-JUL-19 11:53:00 (EST-5)
Location: ELKINS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The gauge at Difficult Run rapidly rose above flood stage of 11 feet at 10:37 AM EST. Leigh Mill Road was flooded as a result.

Flood in FAIRFAX, VIRGINIA
From 08-JUL-19 11:53:00 to 08-JUL-19 14:40:00 (EST-5)
Location: ELKINS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The gauge at Difficult Run crested at 12.59 feet at 12:45 PM EST and remained above flood stage of 11 feet until 2:40 PM EST. Leigh Mill Road was flooded as a result.

Flash Flood in ARLINGTON, VIRGINIA
From 08-JUL-19 08:16:00 to 08-JUL-19 09:30:00 (EST-5)
Location: ROSSLYN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The water level at Four Mile Run rapidly rose above flood stage of 12 feet at 8:16 AM EST and it crested at 15.30 feet at 8:45 AM EST. Water flooded the north bank into grassy areas and parking lots. Water also approached Arlington Mill road on the south side of the stream and water approached structures on the north side of the stream.

Flash Flood in ALEXANDRIA (C), VIRGINIA
From 08-JUL-19 08:52:00 to 08-JUL-19 10:12:00 (EST-5)
Location: ALEXANDRIA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The water level rapidly passed flood stage of 6 feet, chresting at 9.03 feet on July 8th at 9:27 AM EST.

Flash Flood in FAIRFAX, VIRGINIA
From 08-JUL-19 09:15:00 to 08-JUL-19 12:15:00 (EST-5)
Location: RESTON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Route 7 was closed near the intersection with Faulkner Drive.

Flash Flood in ALEXANDRIA (C), VIRGINIA
From 08-JUL-19 08:46:00 to 08-JUL-19 09:47:00 (EST-5)
Location: ALEXANDRIA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The water level at the New Alexandria stormwater pump station rapidly rose above flood stage of 5.5 feet, cresting at 7.51 feet at 9:15 AM EST, July 8th. This caused widespread street and yard flooding below the pump station, and at least a couple structures were impacted below I Street.

Flash Flood in FAIRFAX, VIRGINIA
From 08-JUL-19 09:15:00 to 08-JUL-19 12:15:00 (EST-5)
Location: CLARKS CROSSING
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Lawyers Road was closed due to flooding near the intersection with Helmwood Court and it was also closed between Hunters Mill Road and Lydia Place.

Flash Flood in FAIRFAX, VIRGINIA
From 08-JUL-19 08:44:00 to 08-JUL-19 10:45:00 (EST-5)
Location: SUNSET HILLS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

At least three feet of standing water was in the Wiehle Reston Parking Lot adjacent to the Washington and Old Dominion Railroad Regional Park.