Showers and thunderstorms have become more concentrated this morning in association with a low pressure system located about 150 miles east of Barbados. Environmental conditions are expected to be
conducive for additional development, and a tropical depression is likely to form later today or tonight while the low moves west-northwestward at 10 to 15 mph. The disturbance is forecast to reach portions of the Lesser Antilles tonight, then move near the Virgin Islands and Puerto Rico on Tuesday, and be near Hispaniola around the middle of this week. Tropical storm watches or warnings could be required today with shorter-than-normal lead times for
portions of the Lesser Antilles, the Virgin Islands, and Puerto Rico. In addition, heavy rains and flooding are likely for the Leeward Islands, Virgin Islands, and Puerto Rico.
Interests in those areas should monitor the progress of this system.

This system will be moving up the Caribbean Sea coast impacting areas like Phillipsburg, Simson Bay, Maho, Mullet, Marigot, and Anguilla.
Source: https://www.nhc.noaa.gov/