M 4.6 earthquake: Aleutian Islands (Atka, USA) — April 30, 1977

M 4.6 earthquake: Aleutian Islands (Atka, USA) — April 30, 1977. Epicenter 77 km SE of Atka, depth 38 km, 06:43 Local (1977-04-30 16:43 UTC). Shaking felt by ~61 people. Readings from every reporting agency, affected towns, aftershock sequence.

Aleutian Islands (77 km SE of Atka, USA) — 51.697, -173.421

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