M 4.5 earthquake near Bío-Bío, Chile — 1981-10-23

Magnitude 4.5 earthquake near 83 km S of Concepción (Chile), depth 33 km, 22:16 Local (1981-10-23 01:16 UTC). Shaking felt by ~1.1M people. Readings from every reporting agency, affected towns, aftershock sequence.

83 km S of Concepción (Chile) — -37.571, -73.164