M 4.6 earthquake in the USA (Portland) — April 12, 1976

M 4.6 earthquake in the USA (Portland) — April 12, 1976. Epicenter 151 km E of Portland, depth 15 km, 16:47 Local (1976-04-13 00:47 UTC). Shaking felt by ~383K people. Readings from every reporting agency, affected towns, aftershock sequence.

151 km E of Portland (USA) — 45.0756667, -120.8588333

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