A strong upper level low interacted with a frontal boundary near the Mid-Atlantic region and low pressure formed along the boundary. High moisture content and thunderstorms led to widespread flooding across the Mid-Atlantic region.

Flood in MONTGOMERY, MARYLAND
From 28-JUL-17 13:13:00 to 28-JUL-17 15:30:00 (EST-5)
Location: REDLAND
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Muncaster Mill Road was flooded and closed due to stream overflow near Bowie Mill Road.

Flash Flood in ANNE ARUNDEL, MARYLAND
From 28-JUL-17 23:54:00 to 29-JUL-17 01:30:00 (EST-5)
Location: NORTH LINTHICUM
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Swift water rescue reported at the intersection of Routes 170 and 648 near Pumphrey.

Flash Flood in HOWARD, MARYLAND
From 29-JUL-17 00:38:00 to 29-JUL-17 01:45:00 (EST-5)
Location: HANOVER
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Water flowing across Race Road between Hanover Road and Furnace Avenue due to torrential rains.

Flash Flood in BALTIMORE CITY (C), MARYLAND
From 29-JUL-17 01:28:00 to 29-JUL-17 01:45:00 (EST-5)
Location: CLIFFORD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

The 3400 Block of Spelman Road flooded and closed due to torrential rainfall.

Flash Flood in BALTIMORE, MARYLAND
From 29-JUL-17 01:00:00 to 29-JUL-17 01:45:00 (EST-5)
Location: BALTIMORE MARTIN ST
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Wilson Point Road flooded and closed near Eastern Boulevard due to torrential rainfall.

Flash Flood in MONTGOMERY, MARYLAND
From 28-JUL-17 12:01:00 to 28-JUL-17 12:28:00 (EST-5)
Location: TAKOMA PARK
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The stream gauge on Sligo Creek at Takoma Park exceeded the flood stage of 5.5 feet. It peaked at 5.83 feet at 12:15 EST. Sligo Creek Parkway began to flood near the gauge location, just north of Maple Avenue.

Flash Flood in MONTGOMERY, MARYLAND
From 28-JUL-17 23:06:00 to 29-JUL-17 00:00:00 (EST-5)
Location: TAKOMA PARK
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The stream gauge on Sligo Creek at Takoma Park exceeded the flood stage of 5.5 feet. It peaked at 6.12 feet at 23:45 EST. Sligo Creek Parkway began to flood near the gauge location, just north of Maple Avenue.

Flash Flood in BALTIMORE, MARYLAND
From 28-JUL-17 23:37:00 to 29-JUL-17 00:03:00 (EST-5)
Location: RELAY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The stream gauge on East Branch Herbert Run at Arbutus exceeded the flood stage of 7 feet. It peaked at 7.68 feet at 23:50 EST. Water covered yards near Tom Day Boulevard.

Flood in PRINCE GEORGE'S, MARYLAND
From 29-JUL-17 01:40:00 to 29-JUL-17 01:55:00 (EST-5)
Location: UPPER MARLBORO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The stream gauge on Western Branch at Upper Marlboro exceeded the flood stage of 11 feet. It peaked at 13.39 feet at 10:45 EST. Much of Race Track Road flooded between Marlboro Pike and the community center.

Flood in MONTGOMERY, MARYLAND
From 29-JUL-17 02:07:00 to 29-JUL-17 05:23:00 (EST-5)
Location: WHEATON HILLS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The stream gauge on Northwest Branch Anacostia River at Colesville exceeded the flood stage of 9 feet. It peaked at 9.89 feet at 4:15 EST. Backyards of homes on Kemps Mill Road just south of Randolph Road are flooded.

Flood in MONTGOMERY, MARYLAND
From 28-JUL-17 13:16:00 to 28-JUL-17 15:00:00 (EST-5)
Location: CEDAR GROVE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Kings Valley Road closed at Ridge Road due to high water.

Flood in MONTGOMERY, MARYLAND
From 28-JUL-17 13:16:00 to 28-JUL-17 17:00:00 (EST-5)
Location: BROOKEVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Brookeville Road flooded and closed at Georgia Avenue due to flooding of Reddy Branch.

Flood in MONTGOMERY, MARYLAND
From 28-JUL-17 17:03:00 to 28-JUL-17 19:00:00 (EST-5)
Location: GEORGETOWN JCT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Car stranded in one to two feet of flowing water on Beach Drive.

Flood in PRINCE GEORGE'S, MARYLAND
From 28-JUL-17 22:03:00 to 29-JUL-17 00:00:00 (EST-5)
Location: BRANCHVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Two left lanes on Capital Beltway Outer Loop blocked by standing water just west of Route 1.

Flood in HOWARD, MARYLAND
From 29-JUL-17 00:59:00 to 29-JUL-17 06:24:00 (EST-5)
Location: SAVAGE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The stream gauge on Little Patuxent River at Savage exceeded the flood stage of 10 feet. It peaked at 13.56 feet at 03:15 EST. Riverside trails began to flood. Water also approached fields off Bald Eagle Drive and approached Brock Bridge Road.

Flash Flood in MONTGOMERY, MARYLAND
From 28-JUL-17 23:20:00 to 29-JUL-17 01:45:00 (EST-5)
Location: BROOKEVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Brookeville Road was flooded and closed between Zion Road and Georgia Avenue due to flooding of Reddy Branch due to torrential rainfall.

Flash Flood in MONTGOMERY, MARYLAND
From 28-JUL-17 23:40:00 to 29-JUL-17 01:40:00 (EST-5)
Location: CLOPPER
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Game Preserve Road was flooded and closed due to torrential rain.

Flood in PRINCE GEORGE'S, MARYLAND
From 29-JUL-17 00:30:00 to 29-JUL-17 03:00:00 (EST-5)
Location: ADELPHI
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Piney Branch Road flooded and closed near New Hampshire Avenue.

Flash Flood in BALTIMORE, MARYLAND
From 29-JUL-17 01:00:00 to 29-JUL-17 01:45:00 (EST-5)
Location: CHASE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Eastern Avenue flooded and closed due to torrential rain near Bowleys Quarters.

Flash Flood in ANNE ARUNDEL, MARYLAND
From 29-JUL-17 01:00:00 to 29-JUL-17 01:45:00 (EST-5)
Location: RAYNOR HGTS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Furnace Avenue closed at Ridge Road due to flash flooding of Deep Run.

Flood in ANNE ARUNDEL, MARYLAND
From 29-JUL-17 01:45:00 to 29-JUL-17 05:00:00 (EST-5)
Location: RAYNOR HGTS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Furnace Avenue remained closed at Ridge Road due to flooding of Deep Run.

Flash Flood in BALTIMORE, MARYLAND
From 28-JUL-17 23:44:00 to 29-JUL-17 01:30:00 (EST-5)
Location: BALTIMORE HIGHLANDS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Multiple vehicles reported trapped in high water along West Patapsco Street near Brooklyn Park in the area of Potee Street.

Flood in HOWARD, MARYLAND
From 29-JUL-17 05:57:00 to 29-JUL-17 07:30:00 (EST-5)
Location: ELKRIDGE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Water rescue on Furnace Avenue near Main Street.

Flood in ANNE ARUNDEL, MARYLAND
From 29-JUL-17 06:44:00 to 29-JUL-17 08:00:00 (EST-5)
Location: CROFTON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Defense Highway flooded and closed near Huntwood Drive.

Flood in PRINCE GEORGE'S, MARYLAND
From 29-JUL-17 07:44:00 to 29-JUL-17 10:00:00 (EST-5)
Location: WELLS CORNER
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Route 4 flooded and closed near Upper Marlboro.

Flash Flood in HOWARD, MARYLAND
From 29-JUL-17 01:00:00 to 29-JUL-17 02:00:00 (EST-5)
Location: OAKLAND MILLS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The stream gauge on Little Patuxent River at Guilford exceeded the flood stage of 11 feet. It peaked at 12.05 feet at 02:00 EST. Water began to overflow and cover South Entrance Road near the Columbia Mall.

Flash Flood in MONTGOMERY, MARYLAND
From 28-JUL-17 10:07:00 to 28-JUL-17 11:30:00 (EST-5)
Location: GARRETT PARK
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Multiple vehicles trapped in high water, requiring water rescues near the intersection of Connecticut Avenue and Veirs Mill Road near Wheaton.

Flash Flood in MONTGOMERY, MARYLAND
From 28-JUL-17 10:11:00 to 28-JUL-17 11:45:00 (EST-5)
Location: GARRETT PARK ESTATES
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Swift water rescue in the vicinity of Rock Creek. Vehicle trapped in high water on Randolph Road near Dewey Road.

Flash Flood in MONTGOMERY, MARYLAND
From 29-JUL-17 00:34:00 to 29-JUL-17 02:00:00 (EST-5)
Location: BRINKLOW
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The stream gauge on Hawlings River at Sandy Spring exceeded the flood stage of 6.5 feet. It peaked at 7.35 feet at 02:00 EST. Brighton Dam Road flooded at the Hawlings River.

Flash Flood in PRINCE GEORGE'S, MARYLAND
From 28-JUL-17 12:24:00 to 28-JUL-17 13:45:00 (EST-5)
Location: ADELPHI
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Piney Branch Road was flooded and closed due to flash flooding of a portion of the Northwest Branch near New Hampshire Avenue.

Flash Flood in MONTGOMERY, MARYLAND
From 28-JUL-17 10:41:00 to 28-JUL-17 13:30:00 (EST-5)
Location: KEN GAR
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Viers Mill Road flooded and closed between Centerhill Street and Valleywood Drive in Wheaton due to torrential rainfall with water flowing across the road from a nearby creek.

Flash Flood in MONTGOMERY, MARYLAND
From 28-JUL-17 11:09:00 to 28-JUL-17 13:30:00 (EST-5)
Location: PARKWOOD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Beach Drive was flooded and closed due to Rock Creek going out of its banks at Kensington Parkway.

Flash Flood in MONTGOMERY, MARYLAND
From 28-JUL-17 12:11:00 to 28-JUL-17 13:30:00 (EST-5)
Location: CLOPPER
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Quince Orchard Road was flooded by torrential rain running off into Long Draught Branch and therefore had to be closed.