MIAMI (CBSMiami) – A disturbance in the Atlantic has become Tropical Storm Isaias.

At 10:45 p.m. Wednesday, Isaias was located 155 miles south of Ponce, Puerto Rico with maximum sustained winds near 50 mph with higher gusts.

Isaias is moving toward the west-northwest near 20 mph, and a west-northwestward to northwestward motion with some decrease in forward speed is expected over the next couple of days.

On the forecast track, the center of Isaias will move over Hispaniola on Thursday and near the Southeastern Bahamas by early Friday.

Some weakening is likely when the center moves over Hispaniola with some strengthening expected by Friday.

Tropical-storm-force winds extend outward up to 345 miles mainly to the northeast of the center.

A Tropical Storm Warning is in effect for:

  • Puerto Rico, Vieques, Culebra
  • S. Virgin Islands
  • British Virgin Islands
  • Martin and St. Barthelemy
  • Saba and St. Eustatius
  • Maarten
  • Dominican Republic entire southern and northern coastlines
  • North coast of Haiti from Le Mole St Nicholas eastward to the northern border with the Dominican Republic
  • Turks and Caicos Islands
  • Southeastern Bahamas including the Acklins, Crooked Island, Long Cay, the Inaguas, Mayaguana, and the Ragged Islands
  • Central Bahamas, including Cat Island, the Exumas, Long Island, Rum Cay, and San Salvador

A Tropical Storm Watch is in effect for:

  • Northwestern Bahamas including Andros Island, New Providence, Eleuthera, Abacos Islands, Berry Islands, Grand Bahamas Island, and Bimini

Interests in Cuba and the Florida peninsula should monitor the progress of this system.


According to CBS4 Chief Meteorologist Craig Setzer, it is still too early to tell exact impacts in Florida, but check hurricane supplies, shutters, and evacuation plans in case they are needed.