Nov 24, 2018
Astronomical effects including a full moon and upcoming lunar perigee combined to produce an elevated morning high tide. The level of the high tide was driven even higher by the presence of a passing area of low pressure around the time of high tide. The high tide resulted in coastal flooding along the southeast South Carolina coast including downtown Charleston.
Source: NOAA National Weather Service Storm Events Database (event 792787). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Southern Colleton County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.