The 18th named storm of the Atlantic hurricane was likely to flood parts of Central America and Mexico's Yucatan Peninsula over the coming days.

Sign up for the Morning Brief email newsletter to get weekday updates from The Weather Channel and our meteorologists.T​he Atlantic hurricane season's 18th named storm, Sara, is likely to form in the Caribbean and might head toward the Gulf of Mexico next week,

National Hurricane Center. Forecasters say it will be a hurricane by the time it enters the southeast Gulf of Mexico by Tuesday night. The Lower and Middle Florida Keys from Key West of the Channel 5 bridge are now under a Tropical Storm Watch.