M 5.2 earthquake: Philippine Sea (Butuan, Philippines) — August 18, 1977

M 5.2 earthquake: Philippine Sea (Butuan, Philippines) — August 18, 1977. Epicenter 210 km E of Butuan, depth 33 km, 08:17 Local (1977-08-17 23:17 UTC). Shaking felt by ~1.6M people. Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (210 km E of Butuan, Philippines) — 8.588, 127.422

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