M 4.5 earthquake: South Pacific Ocean (Tonga) — September 15, 1973

M 4.5 earthquake: South Pacific Ocean (Tonga) — September 15, 1973. Epicenter 370 km N of Neiafu, depth 33 km, 04:59 Local (1973-09-15 16:59 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (370 km N, Tonga) — -15.438, -174.911

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