M 6.4 earthquake: North Pacific Ocean (Japan) — March 23, 1978

M 6.4 earthquake: North Pacific Ocean (Japan) — March 23, 1978. Epicenter 381 km E of Kushiro, depth 33 km, 11:49 Local (1978-03-23 01:49 UTC). Shaking felt by ~1.1M people. Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (381 km E, Japan) — 43.855, 148.939

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