For the North Atlantic...Caribbean Sea and the Gulf of Mexico: East of the Windward Islands: The National Hurricane Center is issuing advisories on Potential Tropical Cyclone Two, located several hundred miles east of the southern Windward Islands. * Formation chance through 48 hours...high...70 percent. * Formation chance through 5 days...high...90 percent. 1. Northern Gulf of Mexico: A surface trough of low pressure is located over the north-central Gulf of Mexico. While shower and thunderstorm activity with this system is currently limited, surface pressures have fallen some over the last 24 hours. Some additional development of this system is possible as it moves generally westward at 5-10 mph and approaches the coast of Texas during the next few days. * Formation chance through 48 hours...low...20 percent. * Formation chance through 5 days...low...30 percent. 2. Central Tropical Atlantic: A tropical wave located about 1200 miles east of the Windward Islands is producing disorganized showers and thunderstorms. This system is forecast to interact with another tropical wave to its east over the next several days, and some gradual development is possible later this week while the overall system moves west- northwestward at around 15 mph across the central tropical Atlantic. * Formation chance through 48 hours...low...near 0 percent. * Formation chance through 5 days...low...20 percent.