M 4.5 earthquake: Aleutian Islands (Unalaska, USA) — February 17, 1973

M 4.5 earthquake: Aleutian Islands (Unalaska, USA) — February 17, 1973. Epicenter 214 km SE of Unalaska, depth 33 km, 18:16 Local (1973-02-18 05:16 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

Aleutian Islands (214 km SE of Unalaska, USA) — 52.764, -163.888

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