NWS National Hurricane Center Miami FL
For the North Atlantic…Caribbean Sea and the Gulf of Mexico:
The National Hurricane Center is issuing advisories on Hurricane Irma, located several hundred miles east of the Leeward Islands.
1. An elongated area of low pressure located several hundred miles southwest of the Cabo Verde Islands continues to produce disorganized showers and thunderstorms. Environmental conditions are expected to be conducive for gradual development, and a tropical depression is likely form later this week while the system moves west-northwestward at 10 to 15 mph over the tropical Atlantic Ocean.
* Formation chance through 48 hours…low…30 percent.
* Formation chance through 5 days…high…70 percent.
2. A trough of low pressure located over the southwestern Gulf of Mexico is producing disorganized showers and thunderstorms. Environmental conditions are marginally conducive for some slow development of this system while it drifts west-northwestward and remains over the southwestern Gulf of Mexico during the next few days.
* Formation chance through 48 hours…low…20 percent.
* Formation chance through 5 days…medium…40 percent.
Source: The Daily Herald https://www.thedailyherald.sx/islands/69183-tropical-weather-outlook-800-am-edt-mon-sep-4-2017