M 4.9 Earthquake: Philippine Sea (Surigao, Philippines) — October 7, 1983

M 4.9 Earthquake: Philippine Sea (Surigao, Philippines) — October 7, 1983. Epicenter 75 km NE of Surigao, depth 60 km, 03:26 Local (1983-10-06 19:26 UTC). Shaking felt by ~1.1M people. Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (75 km NE of Surigao, Philippines) — 10.076, 126.108

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