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M7.6 earthquake, south of the Fiji Islands, 1963-12-18

MagnitudeM7.6mw

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Depth55 km

Time (UTC)1963-12-18 00:30

Rank in 19637 / 129among M6+

Rank since 1900344 / 14,458

Energy vs an M6×251approx.

south of the Fiji Islands · -24.75, -176.84

M6.5+ within 300 km (largest first)

2007 M7.8M7.8

1975 M7.8M7.8

1997 M7.8M7.8

2009 M7.6M7.6

1963 M7.6M7.6

2013 M7.4M7.4

1970 M7.3M7.3

1977 M7.2M7.2

1960 M7.2M7.2

1982 M7.2M7.2

1992 M7.2M7.2

1996 M7.2M7.2

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.8 1963-07-04	1963-07-04 10:58	181 km	south of the Fiji Islands
M6.2 1961-12-06	1961-12-06 13:35	30 km	280 km SSW of ‘Ohonua, Tonga
M6.1 1961-05-22	1961-05-22 17:32	70 km	225 km SSW of Vaini, Tonga
M6.4 1961-03-20	1961-03-20 23:42	25 km	south of Tonga
M7.2 1960-11-24	1960-11-24 06:52	30 km	south of the Fiji Islands
M6.6 1960-11-23	1960-11-23 14:12	25 km	south of the Fiji Islands
M6.2 1960-08-09	1960-08-09 16:46	75 km	south of the Fiji Islands
M6.0 1959-09-14	1959-09-14 13:15	35 km	south of the Fiji Islands
M6.1 1957-06-19	1957-06-19 01:29	25 km	286 km SSW of ‘Ohonua, Tonga
M6.3 1956-12-20	1956-12-20 11:00	15 km	Kermadec Islands region

Energy ratio uses the rule that one magnitude unit is about 32 times the energy. Magnitudes and locations are USGS values and can differ from national agencies. Older records are less complete and less precise.