2026-08-28T23:10:36.19Z39.603143.23733.3manualconfirmedGFZ4.67Mw1Origin/20260831083251.317922.43795Magnitude/20260831083251.317979.43796earthquakeGFZOff East Coast of Honshu, Japanregion namegfz2026qwlccontributorID