M 6.1 earthquake: Philippine Sea (Butuan, Philippines) — March 21, 1969

M 6.1 earthquake: Philippine Sea (Butuan, Philippines) — March 21, 1969. Epicenter 189 km E of Butuan, depth 22 km, 00:18 Local (1969-03-20 16:18 UTC). Shaking felt by ~17.3M people. Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (189 km E of Butuan, Philippines) — 8.729, 127.247

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