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M7.5 earthquake, Tonga, 1948-09-08

MagnitudeM7.5mw

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Depth15 km

Time (UTC)1948-09-08 15:09

Rank in 19482 / 114among M6+

Rank since 1900447 / 14,458

Energy vs an M6×178approx.

110 km E of ‘Ohonua, Tonga · -21.22, -173.89

M6.5+ within 300 km (largest first)

2006 M8.0M8.0

1903 M8.0M8.0

1950 M7.8M7.8

1913 M7.8M7.8

2009 M7.6M7.6

1948 M7.5M7.5

1921 M7.4M7.4

1907 M7.3M7.3

2022 M7.3M7.3

1906 M7.2M7.2

1986 M7.2M7.2

1903 M7.1M7.1

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.1 1947-07-12	1947-07-12 12:29	35 km	93 km SSE of Pangai, Tonga
M7.0 1946-11-12	1946-11-12 17:28	15 km	122 km ESE of Pangai, Tonga
M6.3 1946-07-09	1946-07-09 01:08	35 km	43 km SSW of ‘Ohonua, Tonga
M6.5 1943-10-24	1943-10-24 16:04	15 km	176 km SE of ‘Ohonua, Tonga
M6.5 1942-11-02	1942-11-02 23:59	35 km	97 km WSW of Pangai, Tonga
M6.2 1942-02-13	1942-02-13 06:19	15 km	35 km SSW of Pangai, Tonga
M6.2 1939-08-23	1939-08-23 04:36	35 km	44 km W of Pangai, Tonga
M6.2 1939-03-22	1939-03-22 07:21	15 km	133 km SE of Pangai, Tonga
M6.1 1939-02-03	1939-02-03 20:13	15 km	273 km S of ‘Ohonua, Tonga
M6.1 1938-06-29	1938-06-29 18:44	35 km	75 km ENE of Kolonga, 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.