M 4.9 earthquake: Aleutian Islands (Atka, USA) — March 21, 1983

M 4.9 earthquake: Aleutian Islands (Atka, USA) — March 21, 1983. Epicenter 309 km W of Atka, depth 58 km, 13:32 Local (1983-03-22 01:32 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

Aleutian Islands (309 km W of Atka, USA) — 51.272, -178.434

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