A potent storm system crossed the region May 12th. Warm and moist air filtered in ahead of the system, bringing widespread showers and thunderstorms with heavy rain. Heavy rain began to overspread the region during the evening of the 11th and continued through the morning of the 12th. The pressure gradient with the low pressure system produced strong gusty winds across lower southern Maryland during the late evening. With the ground already saturated dozens of trees and power lines fell across the region.
The tight pressure gradient and strong southeasterly flow, despite the quarter moon phase, allowed tidal departures of 2 feet or more along the Maryland Chesapeake Bay in lower southern Maryland. Several roads were closed and homes flooded due to the high tides.

Strong Wind in PRINCE GEORGES, MARYLAND
From 11-MAY-08 22:00:00 to 12-MAY-08 01:00:00 (EST-5)
Magnitude: 40.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Newspaper

Several trees and large limbs fell on power lines in Bowie.

High Wind in ANNE ARUNDEL, MARYLAND
From 11-MAY-08 23:00:00 to 12-MAY-08 01:00:00 (EST-5)
Magnitude: 50.00 EG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Newspaper

A tree fell and crushed a car on Vineyard Terrace in the Epping Forest area of Annapolis. Another large tree demolished a gazebo on Harfield Terrace.

Strong Wind in CHARLES, MARYLAND
From 12-MAY-08 00:00:00 to 12-MAY-08 04:00:00 (EST-5)
Magnitude: 40.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Newspaper

A tree fell on a transmission line at the generating plant in Morgantown, causing power outages in the area.

Strong Wind in FREDERICK, MARYLAND
From 12-MAY-08 01:00:00 to 12-MAY-08 04:00:00 (EST-5)
Magnitude: 40.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Newspaper

A tree fell on a power line on Devilbliss Road, causing power outages in the area.

Coastal Flood in CHARLES, MARYLAND
From 11-MAY-08 19:15:00 to 12-MAY-08 10:00:00 (EST-5)
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Charles County Emergency Management reported several roads flooded along the coast with up to 8 inches of water.

High Wind in CALVERT, MARYLAND
From 11-MAY-08 22:00:00 to 12-MAY-08 02:00:00 (EST-5)
Magnitude: 50.00 EG
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Newspaper

Numerous trees and power lines were downed across Calvert County, leaving thousands without power and closing 3 schools. A man and woman suffered minor injuries when a neighboring house under construction was lifted and collapsed into their home.

High Wind in ST. MARY'S, MARYLAND
From 11-MAY-08 21:00:00 to 12-MAY-08 02:00:00 (EST-5)
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Newspaper

Numerous trees and power lines were downed across St. Mary's County, leaving thousands without power. Minor structural damage was reported when fallen trees and limbs punched holes in a roof of a Dameron home.

Flood in ANNE ARUNDEL, MARYLAND
From 12-MAY-08 01:00:00 to 12-MAY-08 12:00:00 (EST-5)
Location: ANNAPOLIS
Flood cause: Heavy Rain
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Anne Arundel Emergency Management as well as newspapers reported widespread flooding that closed roads across Anne Arundel County. There were several water rescues with cars washed away and driven into flooded roadways.

Flood in MONTGOMERY, MARYLAND
From 12-MAY-08 00:00:00 to 12-MAY-08 14:00:00 (EST-5)
Location: ASHTON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

Montgomery County Emergency Management and newspapers reported numerous roads closed due to high water, especially in eastern portions of the county towards the Prince Georges County line.

Flood in PRINCE GEORGE'S, MARYLAND
From 12-MAY-08 00:00:00 to 12-MAY-08 12:00:00 (EST-5)
Location: CHEVERLY
Flood cause: Heavy Rain
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Newspaper

Prince Georges County Emergency Management and newspapers reported numerous roads closed due to high water, especially in western portions of the county towards the Montgomery County line. A sink hole formed in Camp Springs, leading to minor structural damage and 3 evacuated homes. Four water rescues were also reported in Upper Marlboro.

Flood in ST. MARY'S, MARYLAND
From 11-MAY-08 23:00:00 to 12-MAY-08 14:00:00 (EST-5)
Location: OAKVILLE
Flood cause: Heavy Rain
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Emergency Manager

St. Mary's County Emergency Management reported numerous roads closed due to high water.

Flood in FREDERICK, MARYLAND
From 12-MAY-08 00:00:00 to 12-MAY-08 12:00:00 (EST-5)
Location: WOLFSVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Frederick County Emergency Management numerous road closures across the county due to high water.

Flood in HARFORD, MARYLAND
From 12-MAY-08 04:00:00 to 12-MAY-08 12:00:00 (EST-5)
Location: BEL AIR
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Harford County Emergency Management numerous road closures across the county due to high water.

Flood in HOWARD, MARYLAND
From 12-MAY-08 03:00:00 to 12-MAY-08 10:00:00 (EST-5)
Location: ELLICOTT CITY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

Stoney Run in Patapsco Valley State Park overflowed its banks, leaving Furnace Ave. under 2 feet of water.

Flood in WASHINGTON, MARYLAND
From 12-MAY-08 02:00:00 to 12-MAY-08 10:00:00 (EST-5)
Location: MAUGANSVILLE
Flood cause: Heavy Rain
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Newspaper

Several roads in the Hagerstown area were closed due to high water. Several basements were also flooded.

Coastal Flood in CALVERT, MARYLAND
From 11-MAY-08 21:00:00 to 12-MAY-08 09:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

Numerous roads were closed along coastal Calvert County when tides rose to  3 feet above normal levels. The mobile home park at Hallowing Point was evacuated when high tides threatened the area.

Coastal Flood in ST. MARY'S, MARYLAND
From 11-MAY-08 17:40:00 to 12-MAY-08 10:00:00 (EST-5)
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Newspaper

Numerous homes and roads were flooded across St. George Island and Solomons Annex when tides rose to nearly 3 feet above normal. Roads into St. George Island were closed.

Flood in CALVERT, MARYLAND
From 12-MAY-08 00:00:00 to 12-MAY-08 15:00:00 (EST-5)
Location: LONG BEACH
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Calvert County Emergency Management reported numerous roads flooded across the eastern portion of the county along the Long Beach area.

Flood in CHARLES, MARYLAND
From 11-MAY-08 21:10:00 to 12-MAY-08 10:00:00 (EST-5)
Location: NANJEMOY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Charles County Emergency Management reported numerous roads flooded across the county. There were several water rescues when motorists drove into flooded roadways.

Flood in CARROLL, MARYLAND
From 12-MAY-08 03:00:00 to 12-MAY-08 12:00:00 (EST-5)
Location: TANEYTOWN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Carroll County Emergency Management reported numerous roads flooded across the county, especially in the Taneytown area.