A cold front moved through the region and showers and severe thunderstorms occurred across the Mid Atlantic. A strong low level jet drove activity through the Interstate 95 corridor and abundant amounts of moisture produced heavy rain.

Flash Flood in FREDERICK, MARYLAND
From 18-SEP-12 12:00:00 to 18-SEP-12 15:00:00 (EST-5)
Location: LOYS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Owens creek flooded over Route 77 at Frushour Road.

Flash Flood in FREDERICK, MARYLAND
From 18-SEP-12 12:25:00 to 18-SEP-12 14:00:00 (EST-5)
Location: FREDERICK
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

There was 12 to 18 inches of water covering Patrick Street near West Frederick Middle School.

Flash Flood in MONTGOMERY, MARYLAND
From 18-SEP-12 14:18:00 to 18-SEP-12 17:00:00 (EST-5)
Location: PARKWOOD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Connecticut Ave was flooded at Saul Road.

Flash Flood in BALTIMORE, MARYLAND
From 18-SEP-12 14:41:00 to 18-SEP-12 17:30:00 (EST-5)
Location: CHADWICK MANOR
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

There was approximately one foot of water over National Pike near Ingleside Road.

Flood in FREDERICK, MARYLAND
From 18-SEP-12 15:00:00 to 18-SEP-12 21:00:00 (EST-5)
Location: LOCUST VLY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

There were numerous roads closed in Frederick County including Frederick and Thurmont.

Flood in CARROLL, MARYLAND
From 18-SEP-12 18:45:00 to 19-SEP-12 00:45:00 (EST-5)
Location: KEYSVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

There was high water over a bridge along Keysville Frederick County Road.

Flood in CARROLL, MARYLAND
From 18-SEP-12 18:45:00 to 19-SEP-12 00:45:00 (EST-5)
Location: GUNPOWDER
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

There was high water allowing for bridge to flood along Lineboro Road.

Flood in FREDERICK, MARYLAND
From 18-SEP-12 16:30:00 to 18-SEP-12 22:30:00 (EST-5)
Location: MOTTERS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Sixes Bridge Road at Frederick and Carroll border closed due to flooding.

Flood in FREDERICK, MARYLAND
From 18-SEP-12 22:24:00 to 19-SEP-12 09:30:00 (EST-5)
Location: THURMONT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

There were numerous roads closed near the Monocacy River in Thurmont.

Flash Flood in FREDERICK, MARYLAND
From 18-SEP-12 12:30:00 to 18-SEP-12 15:30:00 (EST-5)
Location: EMMITSBURG
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

The intersection of MD 140 and Harney Road flooded and closed.

Flash Flood in FREDERICK, MARYLAND
From 18-SEP-12 11:42:00 to 18-SEP-12 14:00:00 (EST-5)
Location: ELLERTON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Wolfsville Road was closed at Crow Rock Road due to flooding.

Flash Flood in CARROLL, MARYLAND
From 18-SEP-12 12:45:00 to 18-SEP-12 15:45:00 (EST-5)
Location: TANEYTOWN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

There was high water over a bridge on Teeter Road.

Flash Flood in CARROLL, MARYLAND
From 18-SEP-12 12:45:00 to 18-SEP-12 15:45:00 (EST-5)
Location: BRIDGEPORT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

High water over a bridge along south Baumgardner Road.

Flash Flood in MONTGOMERY, MARYLAND
From 18-SEP-12 14:08:00 to 18-SEP-12 17:00:00 (EST-5)
Location: WESTMORE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

There was an off ramp flooded off I-270 at the Montgomery Avenue exit.