2023-08-16T16:00:20.0000Z-24.4031-175.945316.018manualconfirmedIRIS5.4Mww1Origin/20230816162341.356397.356634Magnitude/20230816162341.356447.356635IRISSOUTH OF TONGA ISLANDSregion nameNEIC PDEcatalogat00rzhr4n,us7000knsrcontributorID