M 4.7 earthquake in the USA (Cantwell) — October 6, 1981

M 4.7 earthquake in the USA (Cantwell) — October 6, 1981. Epicenter 54 km NW of Cantwell, depth 28 km, 10:44 Local (1981-10-06 19:44 UTC). Shaking felt by ~330K people. Readings from every reporting agency, affected towns, aftershock sequence.

54 km NW of Cantwell (USA) — 63.576, -149.955

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