Scattered thunderstorms developed in the early afternoon hours along a cold front and near a weak area of low pressure. These storms moved slowly across the Charleston metro area through the mid afternoon and produced very heavy rainfall.
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS CHS wrote it up.
Scattered thunderstorms developed in the early afternoon hours along a cold front and near a weak area of low pressure. These storms moved slowly across the Charleston metro area through the mid afternoon and produced very heavy rainfall. The excessive rainfall resulted in numerous instances of flash flooding across the Charleston peninsula as well as in the West Ashley area. Observed rainfall amounts from CoCoRaHS observers and automated rain gages ranged from 1.5-4.0 inches for the entire event, including observed hourly rainfall rates of 2-3 inches.
The Charleston,SC radar (KCLX), 104 km away, was scanning. The volume nearest the first event began at 20:00 UTC.
12 flash flood. Local standard time, as filed.
City of Charleston Emergency Management reported that the intersection of King Street and Huger Street was closed due to flooding.
Charleston Police Department reported two intersections were closed due to flooding. The first intersection was N Nassau Street and Cool Blow Street and the second was N Nassau Street and Romney Street.
Charleston Police Department reported that the intersection of Rutledge Avenue and Simons Street was closed due to flooding.
Charleston Police Department reported that Ashley Avenue was closed between Calhoun Street and Bennett Street due to flooding.
Charleston Police Department reported that the intersection of Ogier Street and Calhoun Street was closed due to flooding.
A resident reported water entering the garage of a home on Spinnaker Lane.
Charleston Police Department reported a large section of Morrison Drive was closed due to flooding. The closed section began at the intersection with Brigade Street, continued to Huger Street, and ended at Columbus Street.
Charleston Police Department reported that the intersection of Fishburne Street and Hagood Avenue was closed due to flooding.
Charleston Police Department reported that the intersection of Meeting Street and Huger Street was closed due to flooding.
Charleston Police Department reported that Washington Street was closed between Laurens Street and Society Street due to flooding.
Charleston Police Department reported that the intersection of Barre Street and Wentworth Street was closed due to flooding.
Charleston Police Department reported that the intersection of Bennett Street and Barre Street was closed due to flooding.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in South Carolina in 2025Every state in 2025This day in weather historyWarnings in South Carolina, September 2025
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-10-01. Each event’s entry at NCEI: 1288909, 1288911, 1288915, 1288917, 1288919, 1288920, 1288923, 1288925, 1288928, 1288930, 1288931, 1288932.