M 5.1 earthquake: Philippine Sea (Butuan, Philippines) — September 4, 1981

M 5.1 earthquake: Philippine Sea (Butuan, Philippines) — September 4, 1981. Epicenter 180 km SE of Butuan, depth 33 km, 03:53 Local (1981-09-03 19:53 UTC). Shaking felt by ~3.7M people. Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (180 km SE of Butuan, Philippines) — 8.281, 127.03

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