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M6.9 earthquake, Chile, 1918-05-20

MagnitudeM6.9mw

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Depth20 km

Time (UTC)1918-05-20 17:55

Rank in 191815 / 94among M6+

Rank since 19001743 / 14,458

Energy vs an M6×24approx.

103 km NNW of Coquimbo, Chile · -29.18, -71.93

M6.5+ within 300 km (largest first)

1922 M8.5M8.5

2015 M8.3M8.3

1943 M8.1M8.1

1939 M7.4M7.4

1997 M7.1M7.1

2015 M7.0M7.0

1904 M7.0M7.0

1922 M7.0M7.0

1955 M7.0M7.0

1918 M6.9M6.9

1917 M6.9M6.9

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.9 1917-07-27	1917-07-27 02:51	115 km	72 km WNW of Calingasta, Argentina
M6.9 1917-02-15	1917-02-15 00:48	35 km	57 km W of Ovalle, Chile
M6.9 1910-09-06	1910-09-06 20:03	35 km	36 km W of Copiapó, Chile
M6.3 1906-11-28	1906-11-28 09:01	15 km	137 km WNW of Coquimbo, Chile
M7.0 1904-03-19	1904-03-19 06:27	20 km	86 km NW of La Serena, 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.