 It then began a slight weakening trend on August 28, due to increased inflow from the ridge to its north.On August 29, the cyclone turned to the west and west-northwest while tracking around the periphery of the subtropical ridge, and Ioke again reached the equivalence of Category 5 status.The Japan Meteorological Agency (JMA) assessed Ioke as attaining peak 10‑minute sustained winds of on August 30.