Low pressure passed by to the west toward the Great Lakes. The warm front associated with the low moved through the area while the cold front associated with the low approached from the west. There was enough lift associated with the warm front to combine with a warm and humid atmosphere, resulting in showers and thunderstorms. Rainfall was heavy at times which resulted in flooding.

Flood in FREDERICK, MARYLAND
From 21-AUG-18 23:30:00 to 22-AUG-18 01:30:00 (EST-5)
Location: EMMITSBURG
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Creamery Road was closed due to flooding of Willow Run.

Flood in FREDERICK, MARYLAND
From 21-AUG-18 23:30:00 to 22-AUG-18 01:30:00 (EST-5)
Location: EMMITSBURG
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Annandale Road at Hampton Valley Road was closed due to flooding.

Flood in FREDERICK, MARYLAND
From 21-AUG-18 23:30:00 to 22-AUG-18 01:30:00 (EST-5)
Location: EMMITSBURG
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Irishtown Road was closed due to flooding of Toms Creek.

Flood in FREDERICK, MARYLAND
From 21-AUG-18 23:30:00 to 22-AUG-18 01:30:00 (EST-5)
Location: ST ANTHONY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Hornets Nest Road was closed due to flooding of Owens Creek.

Flood in FREDERICK, MARYLAND
From 21-AUG-18 23:30:00 to 22-AUG-18 01:30:00 (EST-5)
Location: EMMITSBURG
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

North Seton Avenue was closed due to flooding of Flat Run.

Flood in MONTGOMERY, MARYLAND
From 22-AUG-18 00:13:00 to 22-AUG-18 02:13:00 (EST-5)
Location: GLEN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A vehicle was trapped in high water in the 12200 Block of South Glen Road.

Flood in FREDERICK, MARYLAND
From 22-AUG-18 07:33:00 to 22-AUG-18 09:33:00 (EST-5)
Location: EMMITSBURG
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

North Seton Avenue was closed near Route 15 due to flooding.

Flood in CARROLL, MARYLAND
From 21-AUG-18 23:18:00 to 21-AUG-18 23:58:00 (EST-5)
Location: FINKSBURG
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The USGS stream gage on Beaver Run near Finksburg briefly exceeded the 5 foot flood stage during the indicated period, flooding Hughes Road. The peak level of 5.19 feet occurred at 11:30pm EST.

Flood in PRINCE GEORGE'S, MARYLAND
From 22-AUG-18 01:38:00 to 22-AUG-18 07:49:00 (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 at  Upper Marlboro crested at 11.95 feet, above the flood stage of 11 feet. Much of Race Track Road flooded between Marlboro Pike and the community center.

Flood in PRINCE GEORGE'S, MARYLAND
From 21-AUG-18 13:33:00 to 21-AUG-18 15:33:00 (EST-5)
Location: ANDREWS MANOR
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

High water impacted three lanes of the I-95 Outer Loop near Exit 9.

Flood in PRINCE GEORGE'S, MARYLAND
From 21-AUG-18 13:54:00 to 21-AUG-18 15:54:00 (EST-5)
Location: FORESTVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Forestville Road was closed due to high water between Suitland Parkway and Rena Road.

Flood in WASHINGTON, MARYLAND
From 21-AUG-18 20:30:00 to 21-AUG-18 22:30:00 (EST-5)
Location: CAVETOWN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Rowe Road was closed due to flooding between Itnyre Road and Lietersburg Smithburg Road near Grove Creek.

Flood in FREDERICK, MARYLAND
From 21-AUG-18 20:32:00 to 21-AUG-18 22:32:00 (EST-5)
Location: EMMITSBURG
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Seton Avenue in Emmitsburg was closed due to flooding.

Flood in HARFORD, MARYLAND
From 21-AUG-18 21:17:00 to 21-AUG-18 23:17:00 (EST-5)
Location: STREET
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

High water covered the roadway near the intersection of Cherry Hill Road and Burkins Road.

Flood in HARFORD, MARYLAND
From 21-AUG-18 22:28:00 to 22-AUG-18 00:28:00 (EST-5)
Location: PYLESVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A vehicle was stranded in high water and there was flooding into a house near the intersection of Ridge Road and Old Pylesville Road.

Flood in CARROLL, MARYLAND
From 21-AUG-18 22:30:00 to 22-AUG-18 00:30:00 (EST-5)
Location: CEDARHURST
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Hollingsworth Road was closed near Glen Falls Road.

Flood in CARROLL, MARYLAND
From 21-AUG-18 22:30:00 to 22-AUG-18 00:30:00 (EST-5)
Location: LAWNDALE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Lawndale Road was closed due to flooding.

Flood in HARFORD, MARYLAND
From 21-AUG-18 21:29:00 to 21-AUG-18 23:29:00 (EST-5)
Location: STREET
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The road was closed due to flooding near the intersection of State Route 24 and State Route 165.

Flood in FREDERICK, MARYLAND
From 21-AUG-18 23:30:00 to 22-AUG-18 01:30:00 (EST-5)
Location: LOYS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Old Mill Road was closed due flooding of Owens Creek.

Flood in FREDERICK, MARYLAND
From 21-AUG-18 23:30:00 to 22-AUG-18 01:30:00 (EST-5)
Location: GRACEHAM
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Hoovers Mill Road was closed due to flooding of Owens Creek.

Flood in FREDERICK, MARYLAND
From 21-AUG-18 23:30:00 to 22-AUG-18 01:30:00 (EST-5)
Location: MOTTERS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Sixes Road was closed due to flooding of Toms Creek and Grimes road was closed due to flooding of Toms Creek.

Flood in FREDERICK, MARYLAND
From 21-AUG-18 23:30:00 to 22-AUG-18 01:30:00 (EST-5)
Location: MOTTERS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Simmons road was closed at Keysville Road due to flooding of Toms Creek.