2025-08-31T16:13:53.124Z27.2889126.5233164.749manualconfirmedUSGS4.6mb1Origin/20250831171625.624695.55415Magnitude/20250831171625.624773.554162025-08-31T16:42:42.599876Z2025-08-31T17:16:25.638415ZNorthwest of Ryukyu Islandsregion nameOrigin/20250831171625.624695.55415