Active Systems: The National Hurricane Center is issuing advisories on Tropical Storm Karl, located over the southwestern Gulf of Mexico. 1. Eastern Tropical Atlantic: An area of disorganized showers and thunderstorms located several hundred miles south of the Cabo Verde Islands is associated with a tropical wave. Environmental conditions appear marginally conducive for some gradual development during the next few days while the system moves westward and then west-northwestward at about 10 mph. However, the disturbance is expected to move into a less favorable area of stronger upper-level winds by early next week. * Formation chance through 48 hours...low...10 percent. * Formation chance through 5 days...low...20 percent.