And two events with unrecorded causes 1625 and 1714. On april 24 1771 south southeast of ishigaki island part of the former ryūkyū kingdom and now forming part of present day okinawa japan according to records 8 439 persons were killed on ishigaki island and 2 548 on miyako island. A 6 7 magnitude earthquake has occurred at sea near the southern japanese islands of ryukyu.
