M 5.3 earthquake: Caribbean Sea (Saint John's, Antigua and Barbuda) — August 4, 1981

M 5.3 earthquake: Caribbean Sea (Saint John's, Antigua and Barbuda) — August 4, 1981. Epicenter 52 km SE of Saint John's, depth 50 km, 18:00 Local (1981-08-04 22:00 UTC). Shaking felt by ~181K people. Readings from every reporting agency, affected towns, aftershock sequence.

Caribbean Sea (52 km SE of Saint John's, Antigua and Barbuda) — 16.824, -61.467

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