M 5.0 Earthquake: Philippine Sea (Zamboanga, Philippines) — January 11, 1978

M 5.0 Earthquake: Philippine Sea (Zamboanga, Philippines) — January 11, 1978. Epicenter 26 km SE of Zamboanga, depth 60 km, 09:01 Local (1978-01-11 01:01 UTC). Shaking felt by ~1.6M people. Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (26 km SE of Zamboanga, Philippines) — 6.748, 122.231

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