 Meanwhile, Tropical Storm Ed was approaching from the northwest and the ridge north of Dinah moved east, which turned the typhoon northwest. For 48 hours between July 26 and July 28, Dinah and Ed were between 1,165 kilometres (724 mi) and 1,670 kilometres (1,040 mi) from one another, and fujiwara interaction did impart a slight change onto Dinah's track. On July 27, while the cyclones were at their closest approach, Dinah weakened due to the more dominant outflow from Ed. The westerly shear led to a change in track to the east-northeast for Dinah. On July 28, once the cyclones moved farther apart, Dinah restrengthened rapidly and reached its maximum intensity by noon on July 29. Moving north-northeast around the western fringe of the subtropical ridge, Dinah's motion accelerated, moving close to Marcus Island late that afternoon, causing extensive vegetation damage. The coast guard station on the island sustained US $ 30,000 in damage (1984 dollars) when sustained winds reached 63 knots (117 km / h), with gusts to 89 knots (165 km / h). Weakening as it continued to move north-northeast, Dinah regained tropical storm status on July 31. Veering more northeast and interacting with a nearby upper trough in the Westerlies, Dinah became an extratropical cyclone late on August 1. The nontropical cyclone moved off the east, eventually crossing the International Dateline.
