A slow moving cold front dropped into the area from the northeast. The airmass was very warm and humid ahead of the boundary, and that led to the development of showers and thunderstorms with heavy rainfall. The storm motion was slow due to light winds aloft, so the heavy rain led to instances of flooding and flash flooding.

Flash Flood in BALTIMORE, MARYLAND
From 10-JUN-21 14:10:00 to 10-JUN-21 16:10:00 (EST-5)
Location: SPARROWS PT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Water was higher than fences in the area of Hillen Road and 35th Street. There were dozens of streets closed in the northeast side of Baltimore City per DPW.

Flood in BALTIMORE, MARYLAND
From 10-JUN-21 14:17:00 to 10-JUN-21 17:17:00 (EST-5)
Location: OAKLEIGH
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Maryland Route 542 Loch Raven Boulevard flooded at Joan Avenue.

Flood in BALTIMORE, MARYLAND
From 10-JUN-21 14:20:00 to 10-JUN-21 16:20:00 (EST-5)
Location: OAKLEIGH
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Vehicle was stranded in high water near the intersection of Joppa Road and Satyr Hill Road.

Flood in BALTIMORE, MARYLAND
From 10-JUN-21 14:25:00 to 10-JUN-21 16:25:00 (EST-5)
Location: OAKLEIGH
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

High water was reported in the 2300 Block of Ellen Avenue and the road was impassable.

Flood in MONTGOMERY, MARYLAND
From 10-JUN-21 14:20:00 to 10-JUN-21 16:20:00 (EST-5)
Location: PARKWOOD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

The southbound lanes of MD-355 Rockville Pike at Cedar Lane were closed due to high waters.

Flood in BALTIMORE, MARYLAND
From 10-JUN-21 14:54:00 to 10-JUN-21 16:54:00 (EST-5)
Location: PARKVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A car was stranded in water near the intersection of Harris Avenue and Rader Avenue.

Flood in BALTIMORE, MARYLAND
From 10-JUN-21 14:36:00 to 10-JUN-21 16:36:00 (EST-5)
Location: OAKLEIGH
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Cars were stranded in water in the parking lot of the Harford Hills Elementary School.

Flash Flood in CARROLL, MARYLAND
From 10-JUN-21 14:39:00 to 10-JUN-21 16:39:00 (EST-5)
Location: CRANBERRY STATION
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The water level on Cranberry Branch near Westminster rose to 5.9 feet in about 90 minutes, which is above the flood stage of 5 feet. Water approached basements and an access road was flooded as well. The Carroll County 911 Center also reported about a dozen calls for roads that were impassable due to high water.

Flash Flood in CHARLES, MARYLAND
From 10-JUN-21 16:22:00 to 10-JUN-21 18:22:00 (EST-5)
Location: ST CHARLES
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A vehicle was stranded in high water along the roadway n ear the intersection of Bannister Circle and Manning Court.

Flood in CARROLL, MARYLAND
From 10-JUN-21 15:35:00 to 10-JUN-21 18:35:00 (EST-5)
Location: UNION MILLS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Deep Run Road was flooded and impassable.

Flood in CARROLL, MARYLAND
From 10-JUN-21 15:51:00 to 10-JUN-21 18:51:00 (EST-5)
Location: CRANBERRY STATION
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A water rescue took place near the intersection of Old Manchester Road and Lucabaugh Mill Road.

Flood in BALTIMORE, MARYLAND
From 10-JUN-21 17:30:00 to 10-JUN-21 20:30:00 (EST-5)
Location: CUB HILL
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Cub Hill Road was closed due to flooding and debris near Cromwell Bride Road and Glen Arm Road.