Alert USA
weather NWS severe Charleston, SC; Colleton, SC September 11, 2026 at 8:28 PM

Flash Flood Warning

FFWCHS

The National Weather Service in Charleston has issued a

* Flash Flood Warning for... Charleston County in southeastern South Carolina... Colleton County in southeastern South Carolina...

* Until 630 PM EDT.

* At 428 PM EDT, Doppler radar indicated thunderstorms extending from west of Jacksonboro to far lower Charleston County. As much as 3 to 5 inches of rain have fallen in this area this afternoon. An additional 1 to 3 inches could fall through 630 PM, resulting in flash flooding, es

Flooding in Charleston, SC; Colleton, SC can cut off roads with little warning, damage homes near low-lying areas, and disrupt power and water service. Even a few inches of moving water can carry away a vehicle.

This report is based on information from NWS, monitored by Alert USA's verified emergency feed.

Alert USA anticipates a high chance of travel disruptions, elevated property risk in low-lying areas, and possible power outages while the event is active.

Recommended steps: avoid flooded roads — turn around, don't drown; move to higher ground if you are in a low-lying area; charge phones and prepare for power loss; check on family and neighbors.

Alert USA is tracking this flood event and will update this report as verified information becomes available.

Verified by Alert USA • NWS

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