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M6.6 earthquake, Tonga, 1933-07-24

MagnitudeM6.6mw

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Depth25 km

Time (UTC)1933-07-24 18:55

Rank in 193325 / 101among M6+

Rank since 19003863 / 14,458

Energy vs an M6×7approx.

79 km E of Hihifo, Tonga · -15.96, -173.05

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
M6.2 1933-06-18	1933-06-18 03:54	15 km	118 km SSW of Gataivai, Samoa
M6.5 1933-01-27	1933-01-27 22:36	15 km	154 km SSW of Matavai, Samoa
M6.3 1931-07-20	1931-07-20 08:30	35 km	62 km NE of Hihifo, Tonga
M6.3 1931-06-09	1931-06-09 13:52	20 km	182 km NW of Hihifo, Tonga
M6.2 1930-01-14	1930-01-14 22:01	15 km	133 km E of Hihifo, Tonga
M6.4 1928-06-08	1928-06-08 14:39	15 km	183 km SSE of Mata-Utu, Wallis and Futuna
M6.2 1927-07-03	1927-07-03 10:37	15 km	106 km SSW of Gataivai, Samoa
M6.0 1926-11-03	1926-11-03 18:34	15 km	183 km SSE of Mata-Utu, Wallis and Futuna
M6.2 1926-03-16	1926-03-16 17:37	15 km	146 km E of Hihifo, Tonga
M6.1 1925-12-31	1925-12-31 08:46	15 km	129 km SSW of Matavai, Samoa

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.