M 5.4 earthquake: South Atlantic Ocean (South Georgia and the Islands) — September 23, 1990

M 5.4 earthquake: South Atlantic Ocean (South Georgia and the Islands) — September 23, 1990. Epicenter 628 km E of Grytviken, depth 33 km, 15:45 Local (1990-09-23 17:45 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Atlantic Ocean (628 km E, South Georgia and the Islands) — -55.945, -27.068

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