M 4.9 earthquake: Philippine Sea (Butuan, Philippines) — February 24, 1991

M 4.9 earthquake: Philippine Sea (Butuan, Philippines) — February 24, 1991. Epicenter 131 km E of Butuan, depth 33 km, 02:14 Local (1991-02-23 18:14 UTC). Shaking felt by ~1.6M people. Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (131 km E of Butuan, Philippines) — 8.991, 126.731

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