M 4.6 earthquake: South Pacific Ocean (Tonga) — December 22, 1974

M 4.6 earthquake: South Pacific Ocean (Tonga) — December 22, 1974. Epicenter 393 km NW of Neiafu, depth 421 km, 23:16 Local (1974-12-23 11:16 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (393 km NW, Tonga) — -16.211, -176.664

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