M 6.4 earthquake: Aleutian Islands (Unalaska, USA) — November 20, 1957

M 6.4 earthquake: Aleutian Islands (Unalaska, USA) — November 20, 1957. Epicenter 124 km E of Unalaska, depth 25 km, 01:40 Local (1957-11-20 12:40 UTC). Shaking felt by ~195K people. Readings from every reporting agency, affected towns, aftershock sequence.

Aleutian Islands (124 km E of Unalaska, USA) — 53.756, -164.648

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