M 4.9 earthquake: Philippine Sea (Yilan, Taiwan) — January 17, 1977

M 4.9 earthquake: Philippine Sea (Yilan, Taiwan) — January 17, 1977. Epicenter 231 km E of Yilan, depth 78 km, 17:29 Local (1977-01-17 08:29 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (231 km E of Yilan, Taiwan) — 24.038, 123.89

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