A deep low pressure system moving east across the Great Lakes pushed a strong cold front across the region on late April 20th into early April 21st. Numerous strong to severe thunderstorms developed during the afternoon and evening hours across the region and continued into the following morning. High moisture content and training storms lead to flooding across potions of the region with several road closures due to high water. Several storms produced damaging winds that downed trees and power lines. There was also a confirmed tornado in Frederick County.

Flood in LOUDOUN, VIRGINIA
From 20-APR-08 10:18:00 to 20-APR-08 15:00:00 (EST-5)
Location: LEESBURG MUNI
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Loudoun County Emergency Management reported that Tuscarora Creek was out of its banks, closing Lawson Road in Leesburg.

Flood in FAIRFAX, VIRGINIA
From 20-APR-08 15:26:00 to 20-APR-08 21:00:00 (EST-5)
Location: TREMONT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Fairfax County Emergency Management reported the intersection of Woodburn Road and Spicewood Road closed.

Flood in FAIRFAX, VIRGINIA
From 21-APR-08 01:30:00 to 21-APR-08 04:30:00 (EST-5)
Location: MT VERNON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Fairfax County Emergency Management reported road closures in Mount Vernon.

Flood in ARLINGTON, VIRGINIA
From 20-APR-08 15:30:00 to 20-APR-08 20:30:00 (EST-5)
Location: ROSSLYN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Arlington County Emergency Management reported flooding southbound on the George Washington Parkway near the 14th Street Bridge.

Flood in LOUDOUN, VIRGINIA
From 21-APR-08 01:30:00 to 21-APR-08 04:30:00 (EST-5)
Location: WOODBURN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Loudoun County Emergency management reported that Hogback Mountain Road was closed near Route 15.

Tornado in FREDERICK, VIRGINIA
From 20-APR-08 21:02:00 to 20-APR-08 21:04:00 (EST-5)
Location: MIDDLETOWN
Tornado F-scale: EF0
Property damage: 40.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

An NWS survey team confirmed a tornado in Middletown. The tornado touched down on the grounds of an apple farm off Chapel Road. The team found damage to farm outbuildings and a large barn, including one farm outbuilding that was completely uplifted and destroyed with the remains deposited along a half mile path. Apple trees were uprooted, along with two pine trees and one hardwood tree snapped at the trunk approximately 15 feet from the ground. The metal roof of a large barn and the metal roof of a small outbuilding were peeled back in opposite directions despite being along the same damage path. Several ten pound weights were picked up and deposited 40 yards away from where they were originally located in the outbuilding that was completely uplifted. An oak measuring 6 feet in diameter and set 3 feet into the ground served as a structural foundation for the destroyed outbuilding was completely and cleanly removed from the ground and deposited 400 yards away.