薩南諸島
Tropical Storm Grace was the first of ten tropical cyclones in the 1964 typhoon season discovered by meteorological satellites. Upon its detection, it was 1000 km (620 mi) southeast of Okinawa. The precursor disturbance formed on July 25 and took an initially northward track, veering west and organizing into a tropical depression on July 26. Grace became a tropical storm the following day and ultimately attained maximum sustained winds of 95 km/h (60 mph) on July 28 while situated in the central Philippine Sea. The storm then began to take an erratic path that continued for the next three days. During this period, the JTWC considered Grace to have temporarily lost its tropical cyclone status, becoming an indescript collection of squalls. After taking a northward heading, Grace redeveloped on August 3 and tracked across the Satsunan Islands. On August 4, the storm weakened and dissipated west of Kyushu.