M 5.3 earthquake: Philippine Sea (Surigao, Philippines) — August 9, 1975

M 5.3 earthquake: Philippine Sea (Surigao, Philippines) — August 9, 1975. Epicenter 89 km E of Surigao, depth 49 km, 15:35 Local (1975-08-09 07:35 UTC). Shaking felt by ~4.5M people. Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (89 km E of Surigao, Philippines) — 9.501, 126.244

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