Tropical Storm Helene forms in Caribbean. It's expected to become a hurricane and threaten Florida

Florida residents are already filling sandbags days ahead of anticipated flooding from Tropical Storm Helene. Helene formed formed Tuesday in the Caribbean Sea, is expected to cross the Gulf of Mexico and could strengthen into a major hurricane. Hurricane watches have been issued for parts of Cuba, Mexico and part of the Florida coastline, including Tampa Bay. A tropical storm warning has been issued for parts of the Florida Keys. The storm is expected to strengthen into a hurricane Wednesday. Florida Gov. Ron DeSantis has declared a state of emergency in dozens of counties ahead of the storm's arrival as soon as late Thursday.