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M6.5 earthquake, Tonga, 1968-03-11

MagnitudeM6.5mw

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Depth109 km

Time (UTC)1968-03-11 08:26

Rank in 196842 / 159among M6+

Rank since 19004139 / 14,458

Energy vs an M6×6approx.

30 km SSW of Hihifo, Tonga · -16.21, -173.89

M6.5+ within 300 km (largest first)

1919 M8.1M8.1

2009 M8.1M8.1

1917 M8.0M8.0

1975 M7.8M7.8

1981 M7.7M7.7

1977 M7.6M7.6

2023 M7.6M7.6

1995 M7.4M7.4

1987 M7.3M7.3

1984 M7.2M7.2

2000 M7.2M7.2

1957 M7.1M7.1

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.3 1968-01-08	1968-01-08 21:54	13 km	135 km NW of Hihifo, Tonga
M6.3 1967-11-12	1967-11-12 10:36	14 km	250 km ESE of Hihifo, Tonga
M6.2 1967-06-14	1967-06-14 05:06	33 km	82 km NE of Hihifo, Tonga
M6.5 1967-01-01	1967-01-01 07:05	32 km	79 km NNE of Hihifo, Tonga
M6.3 1966-11-05	1966-11-05 12:45	32 km	159 km WNW of Hihifo, Tonga
M6.0 1966-02-25	1966-02-25 22:50	21 km	115 km NE of Hihifo, Tonga
M6.2 1965-03-23	1965-03-23 23:54	30 km	94 km NE of Hihifo, Tonga
M6.5 1965-03-22	1965-03-22 02:44	32 km	89 km NE of Hihifo, Tonga
M6.1 1964-03-19	1964-03-19 21:44	14 km	174 km ENE of Hihifo, Tonga
M6.2 1963-10-08	1963-10-08 00:17	15 km	112 km NE of Hihifo, Tonga

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.