A southerly flow pumped in plenty of moisture from the Atlantic while a slow moving cold front approached from the west. Copious amounts of moisture ahead of the boundary led to showers and thunderstorms. Torrential downpours combined with convection training over the same areas led to some flooding and flash flooding. Some of the flooding lingered into August 3rd.

Flash Flood in ALLEGANY, MARYLAND
From 02-AUG-18 22:55:00 to 03-AUG-18 00:30:00 (EST-5)
Location: FRANKLIN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Numerous roads were blocked by high water in Westernport. Some roads were washed out.

Flash Flood in ALLEGANY, MARYLAND
From 02-AUG-18 22:55:00 to 03-AUG-18 00:30:00 (EST-5)
Location: BARTON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A mudslide was reported along MD-36 near Barton.

Flood in ALLEGANY, MARYLAND
From 02-AUG-18 21:57:00 to 02-AUG-18 23:57:00 (EST-5)
Location: ALLEGANY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

MD-36 Mount Savage Road Northwest was closed due to flooding over Jennings Run near MD-638 Parkersburg Road Northwest.

Flood in WASHINGTON, MARYLAND
From 02-AUG-18 19:07:00 to 03-AUG-18 00:35:00 (EST-5)
Location: FAIRVIEW
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The USGS stream gage on Conococheague Creek near Fairview exceeded the 10 foot flood stage during the indicated period. The peak level of 10.37 feet occurred at 10:15pm EST. Wishard Road and Kemp Mill Road both flooded near the creek.

Flash Flood in ALLEGANY, MARYLAND
From 02-AUG-18 23:00:00 to 03-AUG-18 00:30:00 (EST-5)
Location: MIDLAND
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Buskirk Hollow Road Southwest was washed out near Elklick Road.

Flash Flood in ALLEGANY, MARYLAND
From 02-AUG-18 23:00:00 to 03-AUG-18 00:30:00 (EST-5)
Location: BOWLING GREEN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Water and debris were reported over the road in multiple spots in the Bowling Green and Potomac Park areas, with a rock slide reported in one location.

Flash Flood in ALLEGANY, MARYLAND
From 02-AUG-18 23:18:00 to 03-AUG-18 00:30:00 (EST-5)
Location: LUKE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Ten inches of water was into a house on McKinley Street.

Flood in ALLEGANY, MARYLAND
From 02-AUG-18 22:55:00 to 03-AUG-18 00:55:00 (EST-5)
Location: CLARYSVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hardwood Drive Southwest was closed due to flooding over Preston Run.

Flash Flood in ALLEGANY, MARYLAND
From 02-AUG-18 22:53:00 to 03-AUG-18 00:03:00 (EST-5)
Location: FRANKLIN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The stream gauge on Georges Creek near Westernport quickly rose above the flood stage of 8 feet, cresting at 8.65 feet. Water reached the underside of the railroad bridge at downtown Westernport.