M 5.2 earthquake: Philippine Sea (Butuan, Philippines) — May 1, 1977

M 5.2 earthquake: Philippine Sea (Butuan, Philippines) — May 1, 1977. Epicenter 195 km E of Butuan, depth 77 km, 03:40 Local (1977-04-30 18:40 UTC). Shaking felt by ~1.6M people. Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (195 km E of Butuan, Philippines) — 8.54, 127.27

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