Oct 10, 2018
The remains of Hurricane Michael were preceded in parts of western Virginia by a so-called Predecessor Event (PRE) which brought moderate to heavy rainfall across several counties early on the 11th of October. A deep moisture plume surged north on the periphery of the subtropical ridge over the southeast with the very high precipitable water producing high rainfall rates. The heaviest rainfall from the PRE was concentrated in upper and middle portions of the New River basin and the far upper Dan
Source: NOAA National Weather Service Storm Events Database (event 788361). 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.