M 5.2 earthquake: South Pacific Ocean (Tonga) — May 23, 1977

M 5.2 earthquake: South Pacific Ocean (Tonga) — May 23, 1977. Epicenter 278 km NW of Nuku'alofa, depth 350 km, 12:27 Local (1977-05-22 23:27 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (278 km NW, Tonga) — -19.523, -177.25

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