M 6.9 earthquake: South Atlantic Ocean (South Georgia and the Islands) — September 13, 1921

M 6.9 earthquake: South Atlantic Ocean (South Georgia and the Islands) — September 13, 1921. Epicenter 522 km E of Grytviken, depth 35 km, 00:37 Local (1921-09-13 02:37 UTC). Shaking felt by ~99 people. Readings from every reporting agency, affected towns, aftershock sequence.

South Atlantic Ocean (522 km E, South Georgia and the Islands) — -55.623, -28.664

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