M 4.9 earthquake: North Atlantic Ocean (Antigua and Barbuda) — August 6, 1983

M 4.9 earthquake: North Atlantic Ocean (Antigua and Barbuda) — August 6, 1983. Epicenter 1854 km E of Saint John's, depth 10 km, 22:48 Local (1983-08-07 01:48 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Atlantic Ocean (1854 km E, Antigua and Barbuda) — 22.477, -45.056

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