M 4.7 earthquake: North Atlantic Ocean (Greenland) — February 21, 1983

M 4.7 earthquake: North Atlantic Ocean (Greenland) — February 21, 1983. Epicenter 743 km SE of Timmiarmiut, depth 10 km, 02:27 Local (1983-02-21 04:27 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Atlantic Ocean (743 km SE, Greenland) — 58.281, -31.747

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