M 4.5 earthquake in Japan (Niigata) — December 20, 1987

M 4.5 earthquake in Japan (Niigata) — December 20, 1987. Epicenter 84 km SE of Niigata, depth 22 km, 18:58 Local (1987-12-20 09:58 UTC). Shaking felt by ~4.7M people. Readings from every reporting agency, affected towns, aftershock sequence.

84 km SE of Niigata (Japan) — 37.424, 139.761

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