2026-05-20T23:00:58.63Z-56.1002-27.9302113manualconfirmedEMSC5.7mw1Origin/20260521063635.327019.29346Magnitude/20260521063635.327076.29347EMSCSOUTH SANDWICH ISLANDS REGIONregion nameEMSC-RTScatalog1997936contributorID