From the National Weather Service and the National Oceanic and Atmospheric Administration:

Last night a 1 in 1000 Year Rainfall Event occurred over Blue Ridge, GA. Both the 12-hour rainfall amount of 11.19 in and the 6-hour rainfall amount of 10.28 in exceeded the 1 in 1000 year rainfall event mark during their respective time frames per the NOAA Atlas 14.

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