M 5.3 earthquake in Argentina (San Juan) — October 24, 1978

M 5.3 earthquake in Argentina (San Juan) — October 24, 1978. Epicenter 77 km E of San Juan, depth 47 km, 22:36 Local (1978-10-25 01:36 UTC). Shaking felt by ~878K people. Readings from every reporting agency, affected towns, aftershock sequence.

77 km E of San Juan (Argentina) — -31.525, -67.712