M 4.8 earthquake: Aleutian Islands (Atka, USA) — April 22, 1973

M 4.8 earthquake: Aleutian Islands (Atka, USA) — April 22, 1973. Epicenter 407 km W of Atka, depth 54 km, 09:42 Local (1973-04-22 21:42 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

Aleutian Islands (407 km W of Atka, USA) — 51.129, -179.841

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