2026-04-20T01:21:17.359Z-49.6804117.313910manualconfirmedUSGS5.4mww1Origin/20260420013707.01449.188851Magnitude/20260420013707.014583.1888522026-04-20T01:31:20.048926Z2026-04-20T01:37:07.025298ZWestern Indian-Antarctic Ridgeregion nameOrigin/20260420013707.01449.188851