M 6.1 earthquake: Aleutian Islands (Atka, USA) — August 21, 1939

M 6.1 earthquake: Aleutian Islands (Atka, USA) — August 21, 1939. Epicenter 605 km W of Atka, depth 35 km, 04:19 Local (1939-08-21 15:19 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

Aleutian Islands (605 km W of Atka, USA) — 51.76, 176.989

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