2026-09-27T21:13:35.956512Z-59.08329010009766-26.283668518066406117manualconfirmedIAG4.544976840191417mb1Origin/20260928184439.135176.40555Magnitude/20260928184439.135232.40556earthquakeIAGSouth Sandwich Islands Regionregion nameusp2026szcicontributorID