Forecasters said Tropical Storm Dorian was gathering strength Monday while approaching islands in the eastern Caribbean Sea, and could strike Puerto Rico and its neighbors as a minimal hurricane on Tuesday.

The latest advisory has the storm approaching Florida as a tropical storm, but interaction with land can greatly affect the system’s path, so we’ll have a better idea of Florida impacts by mid-week.

The U.S. National Hurricane Center issued tropical storm warnings for Barbados, St. Lucia, St. Vincent and the Grenadines. A tropical storm watch was issued for Grenada and Martinique.