May 22, 2024
Multiple intense thunderstorms developed with the passage of an upper level disturbance during an afternoon of strong daytime heating. Abundant sunshine and above normal warmth resulted in surface-base CAPE (Convective Available Potential Energy) values ranging from 2,000 to 2,500 J/Kg for areas west of the Blue Ridge in western Virginia. Precipitable water values were estimated to be in the 1.2 to 1.3 inch range as southerly wind flow tapped deeper moisture pooling ahead of an approaching col
Source: NOAA National Weather Service Storm Events Database (event 1175072). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Grayson County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.