M 5.6 earthquake in Costa Rica (David) — September 23, 1983

M 5.6 earthquake in Costa Rica (David) — September 23, 1983. Epicenter 105 km W of David, depth 42 km, 17:44 Local (1983-09-23 23:44 UTC). Shaking felt by ~3.4M people. Readings from every reporting agency, affected towns, aftershock sequence.

105 km W of David (Costa Rica) — 8.422, -83.391

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