M 4.9 earthquake: Philippine Sea (Surigao, Philippines) — October 24, 1981

M 4.9 earthquake: Philippine Sea (Surigao, Philippines) — October 24, 1981. Epicenter 86 km NE of Surigao, depth 64 km, 22:20 Local (1981-10-24 14:20 UTC). Shaking felt by ~616K people. Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (86 km NE of Surigao, Philippines) — 10.406, 125.96