Showers and thunderstorms developed, and with little steering flow aloft this caused the storm motion to be slow. The slow storm motion resulted in instances of flooding and flash flooding.

Flood in PRINCE WILLIAM, VIRGINIA
From 12-AUG-20 06:15:00 to 12-AUG-20 09:15:00 (EST-5)
Location: CATHARPIN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Multiple vehicles were trapped in swift moving and rising water along US-29 Lee Highway just east of VA-234 Sudley Road near Manassas National Battlefield. Young Branch was out of its banks.

Flash Flood in MANASSAS (C), VIRGINIA
From 12-AUG-20 04:54:00 to 12-AUG-20 05:05:00 (EST-5)
Location: MANASSAS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

The road was closed due to a sinkhole at the Intersection of Moseby Court and Moseby Drive.

Flash Flood in LOUDOUN, VIRGINIA
From 12-AUG-20 18:22:00 to 12-AUG-20 20:00:00 (EST-5)
Location: STERLING
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Cabin Branch was out of its banks flooding West Church Road. A car was stranded in the floodwater.

Flood in PRINCE WILLIAM, VIRGINIA
From 12-AUG-20 04:45:00 to 12-AUG-20 06:45:00 (EST-5)
Location: WEST GATE OF LOMOND
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

The intersection of Rolling Rd. and Glen Ct. closed due to flooding.

Flood in PRINCE WILLIAM, VIRGINIA
From 12-AUG-20 04:53:00 to 12-AUG-20 06:53:00 (EST-5)
Location: WELLINGTON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Intersection of Lee Hwy. and Groveton Rd. closed due to flooding.

Flood in FAIRFAX, VIRGINIA
From 12-AUG-20 05:57:00 to 12-AUG-20 07:57:00 (EST-5)
Location: CLARKS CROSSING
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Hunter Mill Rd. closed due to flooding near Cedar Pond Dr./Hunter View Rd.

Flood in FAIRFAX, VIRGINIA
From 12-AUG-20 06:22:00 to 12-AUG-20 08:22:00 (EST-5)
Location: CLARKS CROSSING
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Stuart Mill Rd. closed due to flooding near Birdfoot Ln.

Flood in FAIRFAX, VIRGINIA
From 12-AUG-20 10:30:00 to 12-AUG-20 12:30:00 (EST-5)
Location: CROWELLS CORNER
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Browns Mill Rd. closed due to flooding east of Crowell Rd.

Flood in PRINCE WILLIAM, VIRGINIA
From 12-AUG-20 06:10:00 to 12-AUG-20 08:06:00 (EST-5)
Location: YORKSHIRE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The stream gage on the Bull Run at Manassas Park exceeded the 12 foot flood stage during the indicated period. Water covered backyards in the Yorkshire area and flooded portions of the Bull Run trail system. The peak level of 12.20 feet occurred at 7:00 AM.

Flood in FAIRFAX, VIRGINIA
From 12-AUG-20 05:31:00 to 12-AUG-20 11:11:00 (EST-5)
Location: BURNLEYS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The stream gage on Difficult Run at Wolf Trap exceeded the 195 foot flood stage during the indicated period. Six inches of water covered Browns Mill Rd. at its lowest point. The peak level of 195.85 feet occurred at 08:50 AM.