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M7.4 earthquake, Mexico, 1937-12-23

MagnitudeM7.4mw

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Depth25 km

Time (UTC)1937-12-23 13:18

Rank in 19374 / 98among M6+

Rank since 1900563 / 14,458

Energy vs an M6×126approx.

3 km W of Huixtepec, Mexico · 16.66, -98.34

M6.5+ within 300 km (largest first)

1928 M8.0M8.0

1907 M7.8M7.8

1978 M7.7M7.7

1931 M7.6M7.6

1957 M7.6M7.6

1911 M7.5M7.5

1928 M7.5M7.5

1909 M7.5M7.5

1999 M7.5M7.5

1908 M7.5M7.5

1928 M7.4M7.4

1965 M7.4M7.4

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.1 1937-10-06	1937-10-06 09:47	35 km	8 km S of Valle de Vázquez, Mexico
M6.8 1934-01-28	1934-01-28 19:10	30 km	near the coast of Guerrero, Mexico
M6.7 1933-05-08	1933-05-08 10:33	30 km	14 km N of San Luis de La Loma, Mexico
M6.5 1931-11-02	1931-11-02 00:32	35 km	3 km S of Santa Catarina Cuixtla, Mexico
M6.1 1931-07-17	1931-07-17 09:13	35 km	6 km NW of San Baltazar Loxicha, Mexico
M6.1 1931-05-16	1931-05-16 20:47	25 km	10 km WSW of Villa Sola de Vega, Mexico
M6.4 1931-01-16	1931-01-16 19:19	30 km	2 km NNW of San Marcial Ozolotepec, Mexico
M7.6 1931-01-15	1931-01-15 01:50	35 km	5 km SSW of San Miguel Suchixtepec, Mexico
M6.3 1929-08-17	1929-08-17 23:40	35 km	7 km SSE of Ometepec, Mexico
M7.5 1928-10-09	1928-10-09 03:01	25 km	6 km WSW of San Miguel Panixtlahuaca, Mexico

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.