For the North Atlantic...Caribbean Sea and the Gulf of Mexico: 1. Central Tropical Atlantic: A tropical wave located about 800 miles west-southwest of the Cabo Verde Islands continues to produce some disorganized shower activity. Upper-level winds are expected to become increasingly unfavorable for development during the next couple of days while the system moves generally west-northwestward at 15 to 20 mph across the tropical Atlantic. * Formation chance through 48 hours...low...10 percent. * Formation chance through 5 days...low...10 percent.