The hatched areas on the National Hurricane Center's tropical outlook map indicate "areas where a tropical cyclone — which could be a tropical depression, tropical storm or hurricane — could develop," said National Hurricane Center Deputy Director Jamie Rhome.

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Heavy rainfall will produce torrential rates of 3 to 4 inches per hour across Florida, leading to flooding in some areas, with local totals possibly reaching double digits.

The National Hurricane Center said July 15 it is continuing to track a system off the coast of Florida that could soon become a tropical depression.