M 4.9 earthquake: North Pacific Ocean (Japan) — July 31, 1987

M 4.9 earthquake: North Pacific Ocean (Japan) — July 31, 1987. Epicenter 368 km NE of Kushiro, depth 33 km, 03:46 Local (1987-07-30 17:46 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (368 km NE, Japan) — 44.509, 148.434

EarthquakeLive.org