M 4.6 earthquake: South Pacific Ocean (Tonga) — April 4, 1981

M 4.6 earthquake: South Pacific Ocean (Tonga) — April 4, 1981. Epicenter 254 km NE of Neiafu, depth 33 km, 21:44 Local (1981-04-04 08:44 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (254 km NE, Tonga) — -17.051, -172.275

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