Typhoon Hinnamnor strengthened back to the equivalent of a Category 5 hurricane on the Saffir-Simpson southeast of the southern Ryukyu Islands on Wednesday night. At 11:00 p.m. EDT on Wednesday the center of Typhoon Hinnamnor was located at latitude 22.4°N and longitude 125.7°E which put it about 165 miles (270 km) southeast of Ishigaki, Japan. Hinnamnor was moving toward the south-southwest at 17 m.p.h. (28 km/h). The maximum sustained wind speed was 160 m.p.h. (260 km/h) and there were wind gusts to 195 m.p.h. (315 km/h). The minimum surface pressure was 915 mb.

Typhoon Hinnamnor intensified back to the equivalent of a Category 5 hurricane after the completion of an eyewall replacement cycle southeast of the southern Ryukyu Islands. A circular eye with a diameter of 20 miles (32 km) was at the center of Hinnamnor. The eye was surrounded by a ring of strong thunderstorms and the strongest winds were occurring in that ring of storms. Bands of showers and thunderstorms were revolving around the core of Typhoon Hinnamnor. Storms near the core generated strong upper level divergence that pumped large quantities of mass away from the typhoon.

The circulation around Typhoon Hinnamnor began to contract again after the completion of the eyewall replacement cycle. Winds to typhoon force extended out 45 miles (75 km) from the center of Hinnamnor. Winds to tropical storm force extended out 100 miles (160 km) from the center of circulation. The Hurricane Intensity Index (HII) for Typhoon Hinnamnor was 35.0. The Hurricane Size Index (HSI) was 15.1 and the Hurricane Wind Intensity Size Index (HWISI) was 50.1. Hinnamnor was capable of causing regional catastrophic damage.

Typhoon Hinnamnor will move through an environment capable of supporting a strong typhoon during the next 24 hours. Hinnamnor will move over water where the Sea Surface Temperatures are 30˚C. It will move through region where the upper level winds are weak and there there will be little vertical wind shear. Typhoon Hinnamnor could maintain its intensity during the next 24 hours unless concentric eyewalls form again.

Typhoon Hinnamnor will finish absorbing the circulation of Tropical Depression 13W that is located southeast of Okinawa during the next 24 hours. At 11:00 p.m. EDT on Wednesday the center of Tropical Depression 13W was located at at latitude 24.5°N and longitude 129.0°E which put it about 185 miles (300 km) southeast of Okinawa. The tropical depression was moving toward the northwest at 17 m.p.h. (28 km/h). The maximum sustained wind speed was 30 m.p.h. (50 km/h) and there were wind gusts to 40 m.p.h. (65 km/h). The minimum surface pressure was 1003 mb.

Typhoon Hinnamnor will moved toward the southwest during the next 24 hours as it finishes the absorption of Tropical Depression 13W. On its anticipated track, Typhoon Hinnamnor will move south of the southern Ryukyu Islands during the next 24 hours. Hinnamnor could be in an area where the steering winds are weak after it absorbs the tropical depression. Typhoon Hinnamnor could start to move toward the north back toward the southern Ryukyu Islands on Friday.