M 4.7 earthquake: Philippine Sea (Capitol Hill, Northern Mariana Islands) — February 21, 1973

M 4.7 earthquake: Philippine Sea (Capitol Hill, Northern Mariana Islands) — February 21, 1973. Epicenter 962 km N of Capitol Hill, depth 100 km, 19:35 Local (1973-02-21 09:35 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (962 km N of Capitol Hill, Northern Mariana Islands) — 23.341, 142.617

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