M 4.6 earthquake: Caribbean Sea (San Juan, Puerto Rico) — July 25, 1978

M 4.6 earthquake: Caribbean Sea (San Juan, Puerto Rico) — July 25, 1978. Epicenter 222 km NE of San Juan, depth 37 km, 03:09 Local (1978-07-25 07:09 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

Caribbean Sea (222 km NE of San Juan, Puerto Rico) — 19.985, -64.797

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