A weak boundary remained overhead while anomalous amounts of moisture remained in place along with moderate instability. Thunderstorms caused heavy rainfall, and with a slow storm motion this led to instances of flooding and flash flooding.

Flash Flood in PRINCE GEORGE'S, MARYLAND
From 10-AUG-22 16:35:00 to 10-AUG-22 18:00:00 (EST-5)
Location: GREENBELT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Multiple 911 calls were received for water rescues.

Flash Flood in PRINCE GEORGE'S, MARYLAND
From 10-AUG-22 17:15:00 to 10-AUG-22 18:15:00 (EST-5)
Location: LAUREL
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The Baltimore-Washington Parkway northbound was closed due to high water flowing across the road.

Flash Flood in PRINCE GEORGE'S, MARYLAND
From 10-AUG-22 17:30:00 to 10-AUG-22 18:15:00 (EST-5)
Location: WEST LANHAM HILLS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Multiple water rescues were reported in Lanham.

Flash Flood in PRINCE GEORGE'S, MARYLAND
From 10-AUG-22 17:30:00 to 10-AUG-22 18:15:00 (EST-5)
Location: GLEN DALE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Multiple water rescues were reported in Glen Dale.

Flash Flood in MONTGOMERY, MARYLAND
From 10-AUG-22 16:44:00 to 10-AUG-22 18:00:00 (EST-5)
Location: RANDOLPH HILLS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Avery Road was closed at Norbeck Road due to flowing water.

Flash Flood in PRINCE GEORGE'S, MARYLAND
From 10-AUG-22 16:58:00 to 10-AUG-22 18:15:00 (EST-5)
Location: LARGO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Central Avenue was closed due to flowing water over the roadway.

Flash Flood in PRINCE GEORGE'S, MARYLAND
From 10-AUG-22 16:33:00 to 10-AUG-22 18:25:00 (EST-5)
Location: ALEXANDRIA JCT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The water level along the NE Branch of the Anacostia River rose more than 7.5 feet in an hour, crossing minor flooding threshold.  The water level crested at 9.97 feet at 5:00 PM EST on the 10th before falling below flood stage at 7:06 PM EST. The Northeast Branch trail was flooded.

Flood in CHARLES, MARYLAND
From 10-AUG-22 16:19:00 to 10-AUG-22 18:19:00 (EST-5)
Location: MATTAWOMAN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

High water was reported along Pinewood Drive.

Flood in CHARLES, MARYLAND
From 10-AUG-22 16:21:00 to 10-AUG-22 18:21:00 (EST-5)
Location: PISGAH
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

High water was reported over Ripley Road.

Flood in PRINCE GEORGE'S, MARYLAND
From 10-AUG-22 16:28:00 to 10-AUG-22 18:28:00 (EST-5)
Location: EAST PINES
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

MD-201 Kenilworth Avenue at Riverdale Road had various lanes blocked by high water.

Flood in PRINCE GEORGE'S, MARYLAND
From 10-AUG-22 16:30:00 to 10-AUG-22 18:30:00 (EST-5)
Location: RADIANT VLY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Pennsy Drive was closed due to high water.

Flood in PRINCE GEORGE'S, MARYLAND
From 10-AUG-22 16:32:00 to 10-AUG-22 18:32:00 (EST-5)
Location: WEST LANHAM HILLS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Portions of Interstate 495 was closed near Good Luck Road due to high water.

Flood in PRINCE GEORGE'S, MARYLAND
From 10-AUG-22 16:35:00 to 10-AUG-22 18:35:00 (EST-5)
Location: GLEN DALE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Numerous Roads were closed due to high water near Lanham Severn Road along Folly Branch Creek.

Flood in PRINCE GEORGE'S, MARYLAND
From 10-AUG-22 17:03:00 to 10-AUG-22 19:03:00 (EST-5)
Location: FRIENDLY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

MD-210 North prior to Old Fort Road was closed due to high water.

Flood in PRINCE GEORGE'S, MARYLAND
From 10-AUG-22 17:14:00 to 10-AUG-22 19:14:00 (EST-5)
Location: GREENBELT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

All southbound lanes of MD-295 were closed at MD-193 due to flooding.

Flood in ANNE ARUNDEL, MARYLAND
From 10-AUG-22 17:30:00 to 10-AUG-22 19:30:00 (EST-5)
Location: CONAWAYS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Numerous roads were closed from Crofton to the Prince George County Line due to high water.

Flood in PRINCE GEORGE'S, MARYLAND
From 10-AUG-22 17:45:00 to 10-AUG-22 19:45:00 (EST-5)
Location: UPPER MARLBORO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Numerous roads were close near Upper Marlboro due to high water.

Flash Flood in PRINCE GEORGE'S, MARYLAND
From 10-AUG-22 16:32:00 to 10-AUG-22 17:32:00 (EST-5)
Location: BERWYN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

US-1 northbound near MD-193 University Boulevard was blocked by high water. Several roads were closed nearby due to flowing water from Paint Branch Creek being out of its banks.