M 5.5 earthquake near South Pacific Ocean (Tonga) — 1977-09-21

Magnitude 5.5 earthquake near South Pacific Ocean (263 km S, Tonga), depth 15 km, 22:27 Local (1977-09-21 09:27 UTC). Shaking felt by 0 people. Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (263 km S, Tonga) — -23.5, -175.228

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