M 4.8 earthquake: North Atlantic Ocean (Antigua and Barbuda) — December 4, 1983

M 4.8 earthquake: North Atlantic Ocean (Antigua and Barbuda) — December 4, 1983. Epicenter 1866 km NE of Saint John's, depth 10 km, 16:07 Local (1983-12-04 19:07 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Atlantic Ocean (1866 km NE, Antigua and Barbuda) — 23.731, -45.373

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