M 5.1 earthquake: Philippine Sea (Surigao, Philippines) — July 4, 1981

M 5.1 earthquake: Philippine Sea (Surigao, Philippines) — July 4, 1981. Epicenter 75 km NW of Surigao, depth 38 km, 10:38 Local (1981-07-04 02:38 UTC). Shaking felt by ~5.3M people. Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (75 km NW of Surigao, Philippines) — 10.184, 124.935

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