M 6.6 earthquake: Philippine Sea (Capitol Hill, Northern Mariana Islands) — May 18, 1939

M 6.6 earthquake: Philippine Sea (Capitol Hill, Northern Mariana Islands) — May 18, 1939. Epicenter 911 km N of Capitol Hill, depth 35 km, 04:30 Local (1939-05-17 18:30 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (911 km N of Capitol Hill, Northern Mariana Islands) — 23.101, 143.418

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