M 5.1 Earthquake: Philippine Sea (Surigao, Philippines) — December 18, 1989

M 5.1 Earthquake: Philippine Sea (Surigao, Philippines) — December 18, 1989. Epicenter 170 km E of Surigao, depth 31 km, 22:24 Local (1989-12-18 14:24 UTC). Shaking felt by ~361K people. Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (170 km E of Surigao, Philippines) — 10.236, 126.972

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