M 4.9 earthquake: Philippine Sea (Tuguegarao, Philippines) — March 17, 1978

M 4.9 earthquake: Philippine Sea (Tuguegarao, Philippines) — March 17, 1978. Epicenter 97 km E of Tuguegarao, depth 46 km, 06:49 Local (1978-03-16 22:49 UTC). Shaking felt by ~3.2M people. Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (97 km E of Tuguegarao, Philippines) — 17.447, 122.629

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