NWUS52 KCHS 222356 LSRCHS Preliminary Local Storm Report National Weather Service Charleston SC 756 PM EDT Sat Aug 22 2026 ..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON... ..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE.... ..REMARKS.. 0738 PM Flash Flood Charleston 32.78N 79.94W 08/22/2026 Charleston SC Mesonet A City of Charleston inundation sensor at the intersection of Ogier Street and Calhoun Street measured a peak inundation of 0.72 feet. Flash flooding typically begins at this location when the inundation depth reaches 0.40 feet. && Event Number CHS2601166 $$ ETM