A trough of low pressure was situated from Buckingham County, VA southeast through Alleghany County, NC during the evening of the 15th, while a cold front was advancing eastward across the mountains.  A wave of low pressure passing along the front over western North Carolina served to increase  low level winds into the 20 kt-25 kt range from the south, tapping into deep moisture.  By 8 pm EDT, precipitable water values across Campbell and Appomattox Counties had risen as high as 2.1 inches, which is around 2 standard deviations above normal for mid-July for central Virginia per NWS gridded climatology estimates.  Instability was also observed to be extremely high, with surface-based CAPE values in the 2,500 to 3,000 J/Kg range.  By 10 pm EDT, storms that had made steady progress southeast across Bedford County were beginning to stall along the surface trough stretching across Campbell and Appomattox Counties.  Steady flow of moisture from the south continued to feed into the line of storms, with cells beginning to train over the same locations. High instability continue to support rainfall rates within the stronger cells of 4+ inches per hour.  By 11 pm EDT, CREST Unit Streamflows were beginning to exceed 600 cfs per mi^2 across the southern portion of the City of Lynchburg into northern Campbell County, persisting as such through 1 am EDT on the 16th, when heavy rain exited the area.  FLASH 3-hour Average Recurrence Intervals were observed approaching a 200-year rainfall event just north of the Town of Rustburg.  This resulted in considerable flooding across Campbell county and Lynchburg.

Flash Flood in LYNCHBURG (C), VIRGINIA
From 15-JUL-23 21:15:00 to 15-JUL-23 23:00:00 (EST-5)
Location: (LYH)GLENN FLD LYNCH
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Water overflowing from a tributary of Simons Run was observed covering Simons Run Road as much as a foot deep in spots.  There was no damage to the road and it was reopened after the flooding receded.  A tree was also blown down across the road by thunderstorm winds.

Flash Flood in CARROLL, VIRGINIA
From 15-JUL-23 22:15:00 to 16-JUL-23 00:45:00 (EST-5)
Location: FANCY GAP
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: 911 Call Center

High runoff from heavy rainfall caused a portion of Highway 52 to collapse near the Post Office in the community of Fancy Gap, VA.

Flash Flood in CAMPBELL, VIRGINIA
From 15-JUL-23 21:20:00 to 16-JUL-23 01:00:00 (EST-5)
Location: BOCOCK
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Eastbrook Road was flooded and impassible near the intersection with Campbell Avenue due to high runoff from heavy rainfall.  No damage was reported to the road and it was reopened to traffic after the flooding receded.

Flood in APPOMATTOX, VIRGINIA
From 15-JUL-23 18:30:00 to 15-JUL-23 20:30:00 (EST-5)
Location: BENT CREEK
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Oakville Road was flooded due to standing water after a heavy rainfall.  No damage was reported to the road, and it was open to traffic after the flooding receded.

Flash Flood in CAMPBELL, VIRGINIA
From 15-JUL-23 21:35:00 to 16-JUL-23 01:30:00 (EST-5)
Location: POSM
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A tributary of Opossum Creek was observed overflowing its banks and flowing across Highway 460 several inches deep near the ramp onto Mt. Athos Road.  Mt. Athos Road also experienced flooding due to heavy runoff.  No damage was reported to either roadway, and both were passable to traffic after the flooding receded.

Flash Flood in CAMPBELL, VIRGINIA
From 15-JUL-23 21:48:00 to 16-JUL-23 01:30:00 (EST-5)
Location: CONCORD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Water from Archer Creek was observed flowing several inches deep across Highway 460 near the intersection of Tallyho Road.  No damage was reported to the highway, and it was open to traffic after the flooding receded.

Flash Flood in CAMPBELL, VIRGINIA
From 15-JUL-23 21:40:00 to 16-JUL-23 01:00:00 (EST-5)
Location: LYNCHBURG ARPT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Flat Creek was observed out of its banks and flowing into the cul-de-sac on Jeter Court. The water was also approaching homes along the cul-de-sac, however it is unknown if the water entered the homes.  No damage was reported to Jeter Court, and the road was reopened after the flooding receded.

Flash Flood in CAMPBELL, VIRGINIA
From 15-JUL-23 21:30:00 to 16-JUL-23 01:30:00 (EST-5)
Location: LONE JACK
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Heavy rain resulted in rapid flooding of Sunnymeade Road several inches deep at multiple locations.  No damage was reported to the road, and it was reopened to traffic after the flooding receded.

Flash Flood in CAMPBELL, VIRGINIA
From 15-JUL-23 21:45:00 to 16-JUL-23 01:30:00 (EST-5)
Location: TIMBERLAKE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Buffalo Creek was observed flooding out of its banks and across Grove Avenue several inches deep. No damage was reported to the road.

Flash Flood in CAMPBELL, VIRGINIA
From 15-JUL-23 22:00:00 to 16-JUL-23 01:30:00 (EST-5)
Location: POSM
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Water from Dutchman Branch was observed flowing several inches deep across Oxford Furnace Road. No damage was reported to the road, and it was open to traffic after the flooding receded.

Flash Flood in CAMPBELL, VIRGINIA
From 15-JUL-23 22:10:00 to 16-JUL-23 01:45:00 (EST-5)
Location: WINFALL
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Water from Rough Creek was observed flowing several inches deep across Browns Mill Road. No damage was reported to the highway, and it was open to traffic after the flooding receded.

Flash Flood in CAMPBELL, VIRGINIA
From 15-JUL-23 21:45:00 to 16-JUL-23 01:45:00 (EST-5)
Location: TIMBERLAKE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Buffalo Creek was observed flooding out of its banks across Arrowhead Drive, Lake Court Avenue and Farfields Drive, all several inches deep. No damage was reported to these roads.

Flash Flood in LYNCHBURG (C), VIRGINIA
From 15-JUL-23 21:30:00 to 16-JUL-23 01:45:00 (EST-5)
Location: LYNCHBURG FALWELL AR
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Water from Little Opossum Creek was observed flowing several inches deep across Holcomb Path Road. No damage was reported to the road, and it was open to traffic after the flooding receded.

Flash Flood in CAMPBELL, VIRGINIA
From 15-JUL-23 21:30:00 to 16-JUL-23 01:30:00 (EST-5)
Location: LYNCHBURG ARPT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Water from a tributary of Flat Creek was observed flowing several inches deep across English Tavern Road. No damage was reported to the road, and it was open to traffic after the flooding receded.

Heavy Rain in CAMPBELL, VIRGINIA
From 14-JUL-23 23:00:00 to 15-JUL-23 23:00:00 (EST-5)
Location: LYNCHBURG ARPT
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

The ASOS at Lynchburg Regional Airport recorded 4.29 inches of rainfall for July 15th, which is a new daily record for that date and the second highest single day rainfall total for this station during the month of July. The ASOS measured a total of 3.56 inches during a 2-hour span ending 11 pm EDT, which is a 100-year rainfall event for this duration per NOAA Atlas 14 precipitation frequency estimates.

Flash Flood in APPOMATTOX, VIRGINIA
From 15-JUL-23 21:45:00 to 16-JUL-23 01:30:00 (EST-5)
Location: SPOUT SPG
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Water from Holts Branch was observed flooded out of its banks and flowing several inches deep across Stage Road. No damage was reported to the road, and it was open to traffic after the flooding receded.

Flash Flood in CAMPBELL, VIRGINIA
From 15-JUL-23 22:15:00 to 16-JUL-23 01:45:00 (EST-5)
Location: RUSTBURG
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Portions of Highway 501 in the community of Rustburg were flooded by several inches of flowing water due to heavy rainfall.  No damage was reported to the highway, and it was open to traffic after the flooding receded.

Debris Flow in LYNCHBURG (C), VIRGINIA
From 16-JUL-23 01:20:00 to 16-JUL-23 01:20:00 (EST-5)
Location: LYNCHBURG
Flood cause: Heavy Rain
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Department of Highways

Runoff from heavy rainfall caused a portion of the hillside along 12th Street to collapse onto the road, blocking both lanes of traffic.  The road was closed for multiple weeks to clear the debris and perform work to stabilize the hillside to prevent additional debris flows.  The property damage estimate is the cost of removal of the debris and the necessary repair work.