2026-08-21T13:06:40.821Z-58.8509-26.5571158.986manualconfirmedUSGS5.4mb1Origin/20260821132418.354631.271455Magnitude/20260821132418.354719.2714562026-08-21T13:16:00.440404Z2026-08-21T13:24:21.470247ZSouth Sandwich Islands Regionregion nameOrigin/20260821132418.354631.271455