M 4.6 earthquake: Caribbean Sea (Roatán, Honduras) — July 21, 1977

M 4.6 earthquake: Caribbean Sea (Roatán, Honduras) — July 21, 1977. Epicenter 100 km N of Roatán, depth 33 km, 18:30 Local (1977-07-22 00:30 UTC). Shaking felt by ~5.4K people. Readings from every reporting agency, affected towns, aftershock sequence.

Caribbean Sea (100 km N of Roatán, Honduras) — 17.196, -86.266

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