M 4.7 earthquake in Colombia (Bucaramanga) — April 13, 1977

M 4.7 earthquake in Colombia (Bucaramanga) — April 13, 1977. Epicenter 37 km S of Bucaramanga, depth 166 km, 16:44 Local (1977-04-13 21:44 UTC). Shaking felt by ~840K people. Readings from every reporting agency, affected towns, aftershock sequence.

37 km S of Bucaramanga (Colombia) — 6.825, -73.003

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