M 5.7 earthquake: Philippine Sea (Surigao, Philippines) — May 6, 1991

M 5.7 earthquake: Philippine Sea (Surigao, Philippines) — May 6, 1991. Epicenter 68 km N of Surigao, depth 25 km, 08:10 Local (1991-05-06 00:10 UTC). Shaking felt by ~13.8M people. Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (68 km N of Surigao, Philippines) — 10.373, 125.328

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