M 5.5 earthquake: North Pacific Ocean (Japan) — May 18, 1987

M 5.5 earthquake: North Pacific Ocean (Japan) — May 18, 1987. Epicenter 263 km E of Kitami, depth 111 km, 19:18 Local (1987-05-18 07:18 UTC). Shaking felt by ~423K people. Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (263 km E, Japan) — 44.408, 147.102

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