M 5.5 earthquake near North Pacific Ocean (Japan) — 1977-04-20

Magnitude 5.5 earthquake near North Pacific Ocean (458 km SE, Japan), depth 493 km, 05:04 Local (1977-04-20 20:04 UTC). Shaking felt by 0 people. Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (458 km SE, Japan) — 30.599, 137.484

EarthquakeLive.org