 By midday on August 29, some tropical cyclone forecast models began to show Pat emerging into the Sea of Japan west of the ridge.However, this theory was not supported by the JTWC as they believed that the ridge was too narrow to be picked up a trough.That same day, the JTWC increased the intensity to , equivalent to a Category 2 cyclone on the United States-based Saffir-Simpson Hurricane Wind Scale.