M 4.6 earthquake: Philippine Sea (Yilan, Taiwan) — March 31, 1991

M 4.6 earthquake: Philippine Sea (Yilan, Taiwan) — March 31, 1991. Epicenter 209 km E of Yilan, depth 33 km, 14:26 Local (1991-03-31 05:26 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (209 km E of Yilan, Taiwan) — 24.43, 123.783

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