Weather
Lancaster County Flooding: More Than 6 Inches Reported
Columbia, SC – More than 6 inches of rain has fallen in part of Lancaster County as heavy rainfall shifts east into Chesterfield County, maintaining an overnight flash flooding threat.
By Cameron Hayes · 2026-10-04T14:00:27.214Z
Columbia, SC – More than 6 inches of rain has fallen in part of Lancaster County as heavy rainfall shifts east into Chesterfield County, maintaining an overnight flash flooding threat.
According to the National Weather Service in Columbia, radar estimates showed more than 6 inches of rain had fallen between Great Falls and Heath Springs as of shortly after midnight Sunday. A Flash Flood Warning remained in effect for southwestern Lancaster County until 1:30 a.m.
The heaviest rainfall had begun shifting out of Lancaster County and into Chesterfield County, moving toward Patrick and Cheraw, the NWS said.
A Flood Advisory was also in effect farther east across portions of Chesterfield County. Several inches of rain had already been observed south and east of Jefferson.
The NWS graphic issued late Saturday night showed the Flash Flood Warning covering an area east of Great Falls and south of Lancaster. The separate advisory extended eastward toward Jefferson and surrounding portions of Chesterfield County.
Radar rainfall estimates can differ from amounts measured by rain gauges, but the NWS said radar was indicating more than 6 inches in the hardest hit corridor.
Flash flooding can develop quickly where repeated heavy rain overwhelms drainage systems, creeks and low lying roads. Drivers should not attempt to cross flooded roadways and should seek an alternate route if water covers the road.
Residents across Lancaster and Chesterfield counties should continue monitoring local NWS warnings as the rain shifts east. The most immediate concern is now moving toward Chesterfield County while flooding from earlier rainfall could persist in southwestern Lancaster County.