Oct 22, 2017
A mid-latitude upper level trough interacted with a tropical airmass with precipitable water values in excess of 2 inches. As a result, heavy rainfall occurred across portions of the Florida panhandle. Rainfall amounts in Walton county reached 4-8 inches in spots in around 6 hours time with a few road intersections flooded. The highest measured rainfall amount was 8.15 inches in the far western portion of the county.
Source: NOAA National Weather Service Storm Events Database (event 719456). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Walton County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.