M 4.9 earthquake: Aleutian Islands (Atka, USA) — May 21, 1976

M 4.9 earthquake: Aleutian Islands (Atka, USA) — May 21, 1976. Epicenter 70 km SE of Atka, depth 45 km, 01:15 Local (1976-05-21 11:15 UTC). Shaking felt by ~61 people. Readings from every reporting agency, affected towns, aftershock sequence.

Aleutian Islands (70 km SE of Atka, USA) — 51.72, -173.541

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