M 6.3 earthquake: Caribbean Sea (Mayagüez, Puerto Rico) — October 24, 1918

M 6.3 earthquake: Caribbean Sea (Mayagüez, Puerto Rico) — October 24, 1918. Epicenter 28 km N of Mayagüez, depth 15 km, 23:42 Local (1918-10-25 03:42 UTC). Shaking felt by ~9.3M people. Readings from every reporting agency, affected towns, aftershock sequence.

Caribbean Sea (28 km N of Mayagüez, Puerto Rico) — 18.441, -67.214

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