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SC News

Unsettled Start to the Workweek with Local Flash Flooding

Locally Heavy Rain May Cause Flooding

A wet and unsettled pattern is likely to follow the stormy end to this past weekend over the Palmetto State.

About one dozen reports of wind damage were reported Sunday afternoon from thunderstorms moving through the state. The first reports came from Colleton county shortly after 2 o'clock. Additional reports of strong winds came from Clarendon and Florence counties late Sunday afternoon, followed by another round in Aiken county near sunset as a separate cluster of thunderstorms moved northeastward into the state from Georgia.

Radar and gauge data from Sunday showed the heaviest rain fell in Edgefield and Saluda counties, where 3 to 4 inches fell. Additional pockets of 1 to 3 inches fell across the state from as far west as Oconee and Anderson counties to eastern Richland county and into the Pee Dee, especially south of Florence.

South Carolina is situated within a deep southwesterly wind flow between a high pressure ridge over Florida and a trough over the lower Mississippi River Valley. These winds are directing high moisture content into the state from the Gulf of Mexico. Weak disturbances within the flow are also enhancing the storms and that is likely to continue until at least Tuesday.

Poor drainage, urban, street, and small stream flooding is possible nearly anywhere in the state. However, there are signs the coastal areas may see more persistent thunderstorms for a time later Monday into early Tuesday, which may locally enhance rainfall rates, making the area more susceptible to flash flooding.

There is still a chance of scattered storms on Wednesday, but the possibility of flash flooding is likely to shift to the south of the state, at least temporarily.