M 4.9 earthquake: Philippine Sea (Surigao, Philippines) — February 1, 1976

M 4.9 earthquake: Philippine Sea (Surigao, Philippines) — February 1, 1976. Epicenter 50 km E of Surigao, depth 76 km, 04:25 Local (1976-01-31 20:25 UTC). Shaking felt by ~1.1M people. Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (50 km E of Surigao, Philippines) — 9.838, 125.941

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