M 6.1 earthquake: Caribbean Sea (Mayagüez, Puerto Rico) — October 11, 1918

M 6.1 earthquake: Caribbean Sea (Mayagüez, Puerto Rico) — October 11, 1918. Epicenter 40 km N of Mayagüez, depth 15 km, 13:03 Local (1918-10-11 17:03 UTC). Shaking felt by ~6.3M people. Readings from every reporting agency, affected towns, aftershock sequence.

Caribbean Sea (40 km N of Mayagüez, Puerto Rico) — 18.551, -67.232

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