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COLUMBIA, S.C. (AP) — Weather forecasters say the threat of flooding continues in northwestern South Carolina and part of the coast.

The National Weather Service had a flood watch in effect through Wednesday morning for the northwestern part of the state because of moisture from subtropical storm Alberto.

Forecasters say heavy rain will continue in northwestern South Carolina where there has been rain for two weeks. The weather service said up to 5 inches (13 centimeters) of rain is possible.

A flash flood watch was also in effect along the northeast coast through Tuesday afternoon. The weather service said another 2 inches (5 centimeters) of rain was possible in the Myrtle Beach area.

The weather service on Tuesday confirmed that a weak tornado touched down in Calhoun County on Monday. No one was hurt.