M 4.8 earthquake: Aleutian Islands (Atka, USA) — July 20, 1991

M 4.8 earthquake: Aleutian Islands (Atka, USA) — July 20, 1991. Epicenter 222 km W of Atka, depth 33 km, 10:35 Local (1991-07-20 19:35 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

Aleutian Islands (222 km W of Atka, USA) — 51.436, -177.188

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