Storm Debby strengthens to hurricane en route for Florida

A driver negotiates a flooded street as Tropical Storm Debby passes just to the west of the Tampa Bay, Florida on Sunday (Max Chesnes/Tampa Bay Times via AP)

Tropical Storm Debby has strengthened into a Category 1 hurricane as it approaches Florida.

Forecasters at the National Hurricane Center in Miami said on Sunday evening the storm had maximum sustained winds of 75mph.