Widely scattered thunderstorms developed during the afternoon of June 11th in an environment of strong afternoon heating as temperatures warmed into the low to mid 80s ahead of a backdoor cold front draped across northern Virginia. CAPE values were in excess of 2,000 J/Kg and Precipitable Water values were observed to be in the 1.8 to 1.9 inch range. Weak atmospheric winds resulted in slow storm motion.  The combination of deep instability and abundant moisture resulted in storms producing high rainfall rates of 2 to locally 5 inches per hour, with 1-hour rainfall totals exceeding 3.2 inches near the City of Lynchburg.  This rainfall is a 100-year event per NOAA Atlas 14 Point Precipitation Frequency estimates.  One swift water rescue was reported in the City of Lynchburg when a vehicle was stranded in the floodwaters from Blackwater Creek.  No injuries were reported.

Debris Flow in BEDFORD, VIRGINIA
From 11-JUN-21 18:00:00 to 11-JUN-21 18:00:00 (EST-5)
Location: BOONSBORO
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Public

Two to locally in excess of four inches of rain caused a mudslide along Highway 501.  The road was passable after the debris was cleared.

Flash Flood in BEDFORD, VIRGINIA
From 11-JUN-21 15:45:00 to 11-JUN-21 18:00:00 (EST-5)
Location: BOONSBORO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Between 2 and 2.5 inches of rain fell within a 90-minute period across the community of Boonsboro, at times falling at rates of 4 to 5 inches per hour. This is roughly a 10-year rainfall event per NOAA Atlas 14 Point Precipitation Frequency estimates. This rainfall caused flooding across Walnut Hollow Road at Indered Farm Road.  The road was reopened and passable after the water receded.  No damage was reported.

Heavy Rain in BEDFORD, VIRGINIA
From 11-JUN-21 19:00:00 to 11-JUN-21 19:56:00 (EST-5)
Location: FOREST
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained weather spotter recorded 4.81 inches of rainfall within a nearly 1-hour period.  This amount would be over a 1,000-year event per NOAA Atlas 14 Point Precipitation Frequency estimates.

Flash Flood in PITTSYLVANIA, VIRGINIA
From 11-JUN-21 13:15:00 to 11-JUN-21 15:30:00 (EST-5)
Location: KEELING
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Rainfall of between 2.5 and 3 inches fell within a 90-minute period near the community of Keeling, at times falling at rates of 4 to 5 inches per hour. This is estimated to be a 10- to 25-year rainfall event per NOAA Atlas 14 Point Precipitation Frequency Estimates. The heavy rain caused a tributary of Birch Creek to overflow its banks across Richmond Highway, temporarily closing the highway until the water receded. No damage to the road was reported.

Flash Flood in APPOMATTOX, VIRGINIA
From 11-JUN-21 15:45:00 to 11-JUN-21 19:15:00 (EST-5)
Location: APPOMATTOX
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Water was observed flowing several inches deep across River Ridge Road as Plain Run Branch overflowed its banks.  Doppler radar indicated that between 2.5 and 3 inches of rain fell in the area during a 3-hour period from a slow-moving thunderstorm.  This amount was between a 10- and 25-year rainfall event per NOAA Atlas 14 Point Precipitation Frequency estimates.

Flood in PITTSYLVANIA, VIRGINIA
From 11-JUN-21 14:20:00 to 11-JUN-21 16:45:00 (EST-5)
Location: CHATHAM
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A drainage issue after more than 2 inches of rain fell caused several inches of standing water to back up across Whittle Street in the community of Chatham.

Heavy Rain in LYNCHBURG (C), VIRGINIA
From 11-JUN-21 15:49:00 to 11-JUN-21 17:19:00 (EST-5)
Location: (LYH)GLENN FLD LYNCH
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

An automated personal weather station (Weather Underground: KVALYNCH81) recorded 3.21 inches of rain from a thunderstorm during a 90-minute period.  This is estimated to be around an 100-year rainfall event per NOAA Atlas 14 Point Precipitation Frequency estimates.

Flash Flood in LYNCHBURG (C), VIRGINIA
From 11-JUN-21 16:50:00 to 11-JUN-21 20:00:00 (EST-5)
Location: LYH IVY HILL ARPT
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Between 2.5 and 3.5 inches of rain fell from a slow-moving thunderstorm across the Blackwater Creek watershed during a 90-minute period.  Rainfall rates were observed to 2 to 3 inches per hour during much of this event.  This caused flooding along Blackwater Creek, which caused water to enter apartments along Sandusky Drive.  Multiple residents of these apartments were forced to evacuate until the water receded.  In addition, an automobile became stranded in the flood water along Greenwood Drive where it crosses Blackwater Creek.  No injuries were reported and the occupants were able to escape the flooded vehicle and move to a safe location.