 At least nine other tropical systems never exceeded tropical storm intensity operationally.Most of the systems were noted to have developed within the typical spawning grounds for typhoons originating from easterly waves within the Intertropical Convergence Zone; the exceptions were Ellen and Georgia which developed from cold-core troughs extending southward into the tropical latitudes.Of the 18 typhoons that formed, five were first detected within 300 miles (500 km) of the island of Guam.