M 4.9 earthquake: South Atlantic Ocean (South Georgia and the Islands) — April 20, 1987

M 4.9 earthquake: South Atlantic Ocean (South Georgia and the Islands) — April 20, 1987. Epicenter 635 km SE of Grytviken, depth 81 km, 07:19 Local (1987-04-20 09:19 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Atlantic Ocean (635 km SE, South Georgia and the Islands) — -56.173, -27.058

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