China's Central Meteorological Observatory maintained a blue typhoon warning at
18:00 on Sept 5, saying Tropical Storm Krovanh (No.24) was located at 17:00
about 25 km south of Naha in the Ryukyu Islands (26.0N, 127.7E). Maximum winds
near the center were level 8 (20 m/s), central pressure 995 hPa, with a 7-level
(gale) wind radius of 200–350 km.