M 6.1 earthquake: Caribbean Sea (Mayagüez, Puerto Rico) — November 12, 1918

M 6.1 earthquake: Caribbean Sea (Mayagüez, Puerto Rico) — November 12, 1918. Epicenter 49 km N of Mayagüez, depth 15 km, 17:44 Local (1918-11-12 21:44 UTC). Shaking felt by ~6.3M people. Readings from every reporting agency, affected towns, aftershock sequence.

Caribbean Sea (49 km N of Mayagüez, Puerto Rico) — 18.637, -67.18

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