2025-12-04T16:17:39.255Z-55.443-24.924435manualconfirmedUSGS4.7mb1Origin/20251204164028.506445.24654021Magnitude/20251204164028.506523.246540222025-12-04T16:40:05.454757Z2025-12-04T16:40:28.519529ZSouth Sandwich Islands Regionregion nameOrigin/20251204164028.506445.24654021