M 4.6 earthquake: Philippine Sea (Zamboanga, Philippines) — December 18, 2011

M 4.6 earthquake: Philippine Sea (Zamboanga, Philippines) — December 18, 2011. Epicenter 189 km N of Zamboanga, depth 60 km, 13:16 Local (2011-12-18 05:16 UTC). Shaking felt by ~538K people. Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (189 km N of Zamboanga, Philippines) — 8.617, 122.237

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