Charleston, SC – Afternoon storms could bring dangerous flash flooding across southeast South Carolina, especially in communities along and east of I-95, where heavy rainfall is likely through 9 p.m. Wednesday.
According to the National Weather Service in Charleston, scattered thunderstorms will develop between 3 and 9 p.m., with a 70% chance of at least one inch of rain across affected areas. Some isolated locations may see up to three inches, increasing the potential for rapid-onset flooding in low-lying areas, roadways, and rivers.
Parts of Charleston, Beaufort, Walterboro, and Moncks Corner fall within the “Slight Risk” zone for flash flooding—classified as level 2 out of 4. Water could quickly accumulate on roads, especially near downtown Charleston and major arteries like U.S. 17 and I-26, posing travel hazards during the evening commute.
Drivers are urged to avoid flooded roads, especially underpasses and low spots. “Turn around, don’t drown,” NWS Charleston warns. Residents are encouraged to delay non-essential travel and monitor alerts for potential road closures or emergency updates.
This wet pattern may continue into the evening, with more thunderstorms possible by early Thursday. Flash flood watches remain in effect until conditions improve.
