NHC says 30 percent chance of cyclone northeast of the Leeward Islands
Environmental conditions could become more favorable for development of this system as a tropical or subtropical cyclone during the next few days while it moves northwestward or north-northwestward at about 10 miles per hour (16 km/hour), the Miami-based weather forecaster said.
(Reporting by Ratul Ray Chaudhuri in Bangalore Editing by W Simon)