M 4.7 earthquake: Philippine Sea (Surigao, Philippines) — August 8, 1981

M 4.7 earthquake: Philippine Sea (Surigao, Philippines) — August 8, 1981. Epicenter 58 km E of Surigao, depth 57 km, 00:17 Local (1981-08-07 16:17 UTC). Shaking felt by ~1.1M people. Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (58 km E of Surigao, Philippines) — 9.85, 126.014

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