Sep 19, 2009
The broad upper low continued to drift very slowly east-northeast from east Texas during this period. Showers and thunderstorms became more numerous and very efficient rain producers across west and north Georgia. Tropical moisture continued to spread northward into the region. Precipitable water values increased to over two inches. The repeated rainfall across the same areas primed the stage for the record, historical, and catastrophic flood event that unfolded from the 21st into the 22nd.
Source: NOAA National Weather Service Storm Events Database (event 199387). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in De Kalb County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.