M 4.5 earthquake in Ecuador (Riobamba) — December 24, 1983

M 4.5 earthquake in Ecuador (Riobamba) — December 24, 1983. Epicenter 56 km S of Riobamba, depth 33 km, 03:35 Local (1983-12-24 08:35 UTC). Shaking felt by ~2.8M people. Readings from every reporting agency, affected towns, aftershock sequence.

56 km S of Riobamba (Ecuador) — -2.157, -78.774

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