M 5.1 earthquake: South Pacific Ocean (Tonga) — December 18, 1991

M 5.1 earthquake: South Pacific Ocean (Tonga) — December 18, 1991. Epicenter 361 km NW of Nuku'alofa, depth 611 km, 01:36 Local (1991-12-18 13:36 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (361 km NW, Tonga) — -19.024, -177.84