M 5.2 earthquake: North Atlantic Ocean (Puerto Rico) — December 27, 1976

M 5.2 earthquake: North Atlantic Ocean (Puerto Rico) — December 27, 1976. Epicenter 495 km NE of San Juan, depth 33 km, 22:57 Local (1976-12-28 02:57 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Atlantic Ocean (495 km NE, Puerto Rico) — 22.139, -63.488

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