M 5.5 earthquake: South Pacific Ocean (Tonga) — April 1, 1991

M 5.5 earthquake: South Pacific Ocean (Tonga) — April 1, 1991. Epicenter 276 km NE of Neiafu, depth 33 km, 14:59 Local (1991-04-01 01:59 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (276 km NE, Tonga) — -16.55, -172.591

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