M 4.7 earthquake: Philippine Sea (Surigao, Philippines) — February 11, 1990

M 4.7 earthquake: Philippine Sea (Surigao, Philippines) — February 11, 1990. Epicenter 53 km W of Surigao, depth 33 km, 04:01 Local (1990-02-10 20:01 UTC). Shaking felt by ~1.7M people. Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (53 km W of Surigao, Philippines) — 9.905, 125.022

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