2026-04-20T07:52:55.239877Z39.84471130371094143.4249114990234410manualconfirmedIAG7.263803738543427Mw(mB)1Origin/20260422131951.02709.76281Magnitude/20260422131951.027155.76282earthquakeIAGOff East Coast of Honshu, Japanregion nameusp2026hrtlcontributorID