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M7.4 earthquake, Mexico, 1928-08-04

MagnitudeM7.4mw

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Depth20 km

Time (UTC)1928-08-04 18:26

Rank in 19288 / 119among M6+

Rank since 1900650 / 14,458

Energy vs an M6×110approx.

40 km S of Corralero, Mexico · 15.88, -98.23

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

1937 M7.4M7.4

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M8.0 1928-06-17	1928-06-17 03:19	20 km	15 km ESE of San Gabriel Mixtepec, Mexico
M7.4 1928-03-22	1928-03-22 04:17	15 km	8 km ENE of Santiago Xanica, Mexico
M6.2 1928-02-10	1928-02-10 04:38	80 km	9 km ENE of Tehuitzingo, Mexico
M6.1 1928-01-01	1928-01-01 09:25	25 km	32 km SW of Barra de Tecoanapa, Mexico
M6.4 1920-04-19	1920-04-19 21:06	35 km	7 km W of San Felipe Tejalápam, Mexico
M6.2 1919-01-17	1919-01-17 11:49	15 km	101 km SSW of San Andrés Playa Encantada (El Podrido), Mexico
M7.2 1917-12-29	1917-12-29 22:50	20 km	31 km S of San Francisco Cozoaltepec, Mexico
M6.6 1916-11-21	1916-11-21 06:25	16 km	99 km SE of Crucecita, Mexico
M7.5 1911-12-16	1911-12-16 19:14	30 km	25 km S of Tetitlán, Mexico
M6.5 1910-09-24	1910-09-24 03:32	20 km	4 km ESE of Santa María Jicaltepec, 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.