M 5.9 earthquake: South China Sea (Laoag, Philippines) — September 3, 1974

M 5.9 earthquake: South China Sea (Laoag, Philippines) — September 3, 1974. Epicenter 151 km W of Laoag, depth 11 km, 13:55 Local (1974-09-03 05:55 UTC). Shaking felt by ~5.5M people. Readings from every reporting agency, affected towns, aftershock sequence.

South China Sea (151 km W of Laoag, Philippines) — 18.337, 119.171

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