M 4.9 earthquake: South Pacific Ocean (Tonga) — March 12, 1973

M 4.9 earthquake: South Pacific Ocean (Tonga) — March 12, 1973. Epicenter 346 km W of Nuku'alofa, depth 618 km, 03:26 Local (1973-03-11 15:26 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (346 km W, Tonga) — -19.979, -178.301

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