M 4.7 earthquake: Philippine Sea (Tuguegarao, Philippines) — January 6, 1978

M 4.7 earthquake: Philippine Sea (Tuguegarao, Philippines) — January 6, 1978. Epicenter 145 km N of Tuguegarao, depth 33 km, 13:51 Local (1978-01-06 05:51 UTC). Shaking felt by ~1.6M people. Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (145 km N of Tuguegarao, Philippines) — 18.88, 122.06

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