M 5.5 earthquake: Aleutian Islands (Atka, USA) — December 31, 1971

M 5.5 earthquake: Aleutian Islands (Atka, USA) — December 31, 1971. Epicenter 397 km W of Atka, depth 104 km, 07:51 Local (1971-12-31 19:51 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

Aleutian Islands (397 km W of Atka, USA) — 51.673, -179.925

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