M 4.6 Earthquake: Philippine Sea (Surigao, Philippines) — May 31, 1991

M 4.6 Earthquake: Philippine Sea (Surigao, Philippines) — May 31, 1991. Epicenter 90 km NE of Surigao, depth 33 km, 08:41 Local (1991-05-31 00:41 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (90 km NE of Surigao, Philippines) — 10.175, 126.204

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