An upper level storm system approaching from the west helped to trigger numerous showers and thunderstorms mainly over the Appalachians and Blue Ridge Mountains. The storms developed along a slow-moving frontal boundary, and with abundant moisture in place,some of the storms produced heavy rainfall with flash flooding in several counties along with hail and strong winds.

Flash Flood in GRAYSON, VIRGINIA
From 13-MAY-11 14:00:00 to 13-MAY-11 15:00:00 (EST-5)
Location: FRIES
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Trained Spotter

From 3 to 5 inches of rain in less than 2 hours caused flash flooding in Fries. Dalton Road Creek was several feet out of its banks at the Fries RV park and at least 17 cars were flooded in the town. At the Fries School water got into some classrooms and into the school library. Several roads in the Fries area were closed by flooding.

Flash Flood in CARROLL, VIRGINIA
From 13-MAY-11 14:00:00 to 13-MAY-11 15:00:00 (EST-5)
Location: CLIFFVIEW
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Heavy rains of 3 to 5 inches in less than 2 hours caused flooding of Dixon Branch along Fries Road from near the Country Convenience store to the low water bridge at the New River, with 6 to 8 inches of water flowing over the road. A large rockfall also occurred along Fries Road.

Thunderstorm Wind in FLOYD, VIRGINIA
From 13-MAY-11 15:10:00 to 13-MAY-11 15:10:00 (EST-5)
Location: ALUM RIDGE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: State Official

A few trees were blown down along Alum Ridge Road.

Flash Flood in GILES, VIRGINIA
From 13-MAY-11 16:18:00 to 13-MAY-11 17:30:00 (EST-5)
Location: PEMBROKE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Heavy rains of 2 to 3 inches in a few hours over north central Giles County produced flooding and mudslides in various locations around the county. Route 460 was partially closed by deep standing water and mudslides were reported on State Route 616 and on Sinking Creek Road. Dry Branch Hollow Road was also close by flooding.

Hail in CARROLL, VIRGINIA
From 13-MAY-11 13:30:00 to 13-MAY-11 13:30:00 (EST-5)
Location: HILLTOWN
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in CARROLL, VIRGINIA
From 13-MAY-11 13:40:00 to 13-MAY-11 13:40:00 (EST-5)
Location: HILLTOWN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Multiple reports of quarter-size hail in Fries.

Hail in WYTHE, VIRGINIA
From 13-MAY-11 14:01:00 to 13-MAY-11 14:01:00 (EST-5)
Location: JACKSONS FERRY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in GRAYSON, VIRGINIA
From 13-MAY-11 16:38:00 to 13-MAY-11 16:38:00 (EST-5)
Location: OAK HILL
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in ROANOKE, VIRGINIA
From 13-MAY-11 15:25:00 to 13-MAY-11 15:25:00 (EST-5)
Location: MASON COVE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trees were down in the Mason Cove area.

Flash Flood in GALAX (C), VIRGINIA
From 13-MAY-11 14:30:00 to 13-MAY-11 15:30:00 (EST-5)
Location: GALAX
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Several roads in the City of Galax were closed due to the heavy rain including Creekview Drive, Givens Road and Eastview Road. Radar estimated that 2 to 3 inches fell in a few hours on the north edge of Galax. Flooding was likely urban runoff, although Mill Creek may have flooded as well.

Heavy Rain in GRAYSON, VIRGINIA
From 13-MAY-11 14:15:00 to 13-MAY-11 15:15:00 (EST-5)
Location: FRIES
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A spotter reported 3.31 inches of rain in one hour in the town of Fries.

Flash Flood in GRAYSON, VIRGINIA
From 13-MAY-11 16:38:00 to 13-MAY-11 17:00:00 (EST-5)
Location: RUGBY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

A rock slide closed a portion of Little Wilson road northwest of Volney in an area where 1 to 3 inches of rain fell in a few hours.

Flash Flood in TAZEWELL, VIRGINIA
From 13-MAY-11 17:29:00 to 13-MAY-11 18:30:00 (EST-5)
Location: FALLS MILLS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Rainfall of 1 to 2 inches in less than two hours caused flooding on Mud Fork Road in the northeast part of the county.

Flash Flood in GRAYSON, VIRGINIA
From 13-MAY-11 17:00:00 to 13-MAY-11 19:00:00 (EST-5)
Location: FOX
Flood cause: Heavy Rain
Property damage: 60.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Rainfall of 3 to 6 inches fell in a few hours causing flooding throughout portions of the Fox Creek drainage south of Flat Ridge. An unofficial rain gage amount of 4 inches in 1 hour was reported.  The Little Fox Creek and Middle Fox Creek basins were the most severely impacted down to their confluence with Fox Creek. Several roads were flooded including State Route 762, Flat Ridge Road, Fox Creek Road and Honey Grove Road. Flood damage was particularly severe along Honey Grove Road where the road was completely destroyed in a small section and two large drainage pipes washed out. According to VDOT damage to the road there cost $25,000 to repair. In addition, a camper was reportedly washed away and several private bridges were also damaged.

Thunderstorm Wind in GILES, VIRGINIA
From 13-MAY-11 15:55:00 to 13-MAY-11 15:55:00 (EST-5)
Location: PEMBROKE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Thunderstorm winds blew a tree down on Commissary Hill Road.

Thunderstorm Wind in GILES, VIRGINIA
From 13-MAY-11 15:50:00 to 13-MAY-11 15:50:00 (EST-5)
Location: GOODWINS FERRY
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Thunderstorm winds blew a tree down on Route 605, or Spruce Run Road.

Thunderstorm Wind in ROANOKE, VIRGINIA
From 13-MAY-11 15:20:00 to 13-MAY-11 15:20:00 (EST-5)
Location: GLENVAR
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds blew down several trees in Glenvar along West Main Street.

Thunderstorm Wind in CARROLL, VIRGINIA
From 13-MAY-11 13:30:00 to 13-MAY-11 13:40:00 (EST-5)
Location: HILLTOWN
Magnitude: 52.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Multiple trees were blown down by thunderstorm winds in the town of Fries along Carrol Drive. A trained spotter estimated winds to be 60 MPH.