M 4.9 earthquake: Aleutian Islands (Atka, USA) — July 21, 1978

M 4.9 earthquake: Aleutian Islands (Atka, USA) — July 21, 1978. Epicenter 293 km W of Atka, depth 54 km, 10:50 Local (1978-07-21 20:50 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

Aleutian Islands (293 km W of Atka, USA) — 51.433, -178.286

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