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M6.5 earthquake, Tonga, 1997-08-29

MagnitudeM6.5mwb

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Depth33 km

Time (UTC)1997-08-29 06:54

Rank in 199742 / 136among M6+

Rank since 19004483 / 14,458

Energy vs an M6×6approx.

206 km WNW of Hihifo, Tonga · -15.23, -175.58

M6.5+ within 300 km (largest first)

1917 M8.0M8.0

1981 M7.7M7.7

2023 M7.6M7.6

1995 M7.4M7.4

1984 M7.2M7.2

2000 M7.2M7.2

1957 M7.1M7.1

1972 M7.0M7.0

1913 M6.9M6.9

1989 M6.9M6.9

1914 M6.8M6.8

2017 M6.8M6.8

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.0 1997-08-04	1997-08-04 19:21	33 km	193 km WNW of Hihifo, Tonga
M6.1 1997-08-04	1997-08-04 18:53	33 km	181 km WNW of Hihifo, Tonga
M6.4 1997-05-27	1997-05-27 08:00	14 km	96 km NNE of Hihifo, Tonga
M6.0 1996-11-16	1996-11-16 09:47	33 km	201 km S of Mata-Utu, Wallis and Futuna
M6.7 1996-08-05	1996-08-05 02:08	41 km	104 km NE of Hihifo, Tonga
M6.0 1996-02-16	1996-02-16 11:34	33 km	96 km NE of Hihifo, Tonga
M6.0 1995-11-13	1995-11-13 07:38	10 km	99 km NNE of Hihifo, Tonga
M6.1 1995-10-02	1995-10-02 23:48	33 km	146 km NW of Hihifo, Tonga
M6.0 1995-05-07	1995-05-07 22:38	20 km	82 km NE of Hihifo, Tonga
M6.1 1995-04-08	1995-04-08 01:20	38 km	91 km NNE 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.