M 4.8 earthquake: Caribbean Sea (San Juan, Puerto Rico) — August 28, 1981

M 4.8 earthquake: Caribbean Sea (San Juan, Puerto Rico) — August 28, 1981. Epicenter 163 km NE of San Juan, depth 33 km, 20:15 Local (1981-08-29 00:15 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

Caribbean Sea (163 km NE of San Juan, Puerto Rico) — 19.282, -64.857

EarthquakeLive.org