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M7.2 earthquake, Chile, 1940-10-04

MagnitudeM7.2mw

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Depth35 km

Time (UTC)1940-10-04 07:55

Rank in 19406 / 105among M6+

Rank since 1900856 / 14,458

Energy vs an M6×65approx.

Near the coast of Tarapaca, Chile · -19.98, -70.42

M6.5+ within 300 km (largest first)

2014 M8.2M8.2

2005 M7.8M7.8

2014 M7.7M7.7

2007 M7.7M7.7

1967 M7.3M7.3

1915 M7.3M7.3

1933 M7.3M7.3

1940 M7.2M7.2

1987 M7.2M7.2

1959 M7.1M7.1

1911 M6.9M6.9

1906 M6.9M6.9

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.4 1938-04-17	1938-04-17 14:39	35 km	Tarapaca, Chile
M6.1 1934-12-23	1934-12-23 09:52	15 km	93 km WSW of Colchani, Bolivia
M6.5 1934-12-04	1934-12-04 17:24	35 km	105 km SSE of Arica, Chile
M7.3 1933-02-23	1933-02-23 08:09	35 km	34 km S of Iquique, Chile
M6.6 1920-10-22	1920-10-22 12:09	15 km	152 km WNW of Tocopilla, Chile
M6.4 1918-08-17	1918-08-17 06:53	35 km	92 km N of Iquique, Chile
M6.9 1916-08-25	1916-08-25 09:44	15 km	181 km W of Iquique, Chile
M7.3 1915-06-06	1915-06-06 21:29	160 km	136 km WSW of Challapata, Bolivia
M6.9 1911-09-15	1911-09-15 13:09	15 km	119 km W of Iquique, Chile
M6.9 1906-12-26	1906-12-26 05:53	35 km	87 km NNW of Iquique, Chile

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.