M 4.6 earthquake: Aleutian Islands (Atka, USA) — May 20, 1973

M 4.6 earthquake: Aleutian Islands (Atka, USA) — May 20, 1973. Epicenter 179 km W of Atka, depth 56 km, 04:20 Local (1973-05-20 14:20 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

Aleutian Islands (179 km W of Atka, USA) — 51.701, -176.684

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