Tropical Storm Elsa formed overnight as it headed toward the Caribbean.

Heavy rainfall and possible isolated flash flooding and mudslides will likely hit Barbados and the Windward and Leeland Islands by tomorrow.

Potential impacts on Florida weren’t immediately clear given the uncertainty in the long-range forecast.

The tropical storm was moving west with current maximum sustained winds of 40 mph.

A faster west-northwesterly movement was expected within the next 24 to 36 hours.