M 4.6 earthquake: Philippine Sea (Butuan, Philippines) — February 26, 1991

M 4.6 earthquake: Philippine Sea (Butuan, Philippines) — February 26, 1991. Epicenter 90 km E of Butuan, depth 100 km, 02:55 Local (1991-02-25 18:55 UTC). Shaking felt by ~955K people. Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (90 km E of Butuan, Philippines) — 9.198, 126.326

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