Sunday, August 24, 2025

Charleston sets new rainfall record as a stalled cold front triggers flash floods in South Carolina


Charleston sets new rainfall record as a stalled cold front triggers flash floods in South Carolina


Charleston broke a daily rainfall record as a stalled cold front over the southeastern United States dropped up to 300 mm (12 inches) rain in Charleston County, on Friday, August 22, 2025. The system also affected parts of southeastern Georgia, prompting Level 2 of 4 flash flood risk alerts from the Weather Prediction Center, with rainfall rates exceeding 75 mm (3 inches) per hour and localized accumulations up to 150 mm (6 inches) expected through Sunday, August 24. 

A cold front that had helped steer Hurricane Erin away from the US coastline stalled over the southeastern United States this week, resulting in prolonged and intense rainfall across coastal South Carolina and Georgia.

The city of Charleston set a new daily rainfall record on Friday, August 22, registering 106 mm (4.17 inches), including 57 mm (2.25 inches) in just 30 minutes. Charleston International Airport, received around 75 mm (3 inches) of rain in just 35 minutes due to the storm. Some roads in front of the international terminals were submerged and impassable, according to airport officials.

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