M 5.1 earthquake: Philippine Sea (Tuguegarao, Philippines) — March 25, 1977

M 5.1 earthquake: Philippine Sea (Tuguegarao, Philippines) — March 25, 1977. Epicenter 132 km SE of Tuguegarao, depth 33 km, 03:33 Local (1977-03-24 19:33 UTC). Shaking felt by ~6.3M people. Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (132 km SE of Tuguegarao, Philippines) — 16.734, 122.562

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