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M6.6 earthquake, Chile, 1920-10-22

MagnitudeM6.6mw

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Depth15 km

Time (UTC)1920-10-22 12:09

Rank in 192021 / 69among M6+

Rank since 19003824 / 14,458

Energy vs an M6×8approx.

152 km WNW of Tocopilla, Chile · -21.60, -71.58

M6.5+ within 300 km (largest first)

2014 M8.2M8.2

1995 M8.0M8.0

2014 M7.7M7.7

2007 M7.7M7.7

1967 M7.3M7.3

1933 M7.3M7.3

1940 M7.2M7.2

1998 M7.1M7.1

1928 M7.0M7.0

1911 M6.9M6.9

2014 M6.9M6.9

1916 M6.9M6.9

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.4 1918-08-17	1918-08-17 06:53	35 km	92 km N of Iquique, Chile
M6.8 1916-12-23	1916-12-23 09:24	75 km	81 km WSW of Calama, Chile
M6.9 1916-08-25	1916-08-25 09:44	15 km	181 km W of Iquique, Chile
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.