Aug 3, 2018
A persistent plume of tropical moisture and embedded perturbations aloft triggered clusters of convection with torrential downpours. Since the wind field was fairly unidirectional, training cells lead to locally excessive rainfall and flash flooding, along with isolated wind damage.
Source: NOAA National Weather Service Storm Events Database (event 778999). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Alamance County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.