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M8.0 earthquake, Chile, 1918-12-04

MagnitudeM8.0mw

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Depth40 km

Time (UTC)1918-12-04 11:47

Rank in 19183 / 94among M6+

Rank since 190080 / 14,458

Energy vs an M6×1,035approx.

60 km W of Diego de Almagro, Chile · -26.46, -70.65

M6.5+ within 300 km (largest first)

1922 M8.5M8.5

1918 M8.0M8.0

1966 M7.7M7.7

1987 M7.6M7.6

1936 M7.5M7.5

1909 M7.5M7.5

1939 M7.4M7.4

1983 M7.4M7.4

1960 M7.3M7.3

1988 M7.2M7.2

1998 M7.1M7.1

1942 M7.1M7.1

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.9 1913-05-24	1913-05-24 23:24	15 km	178 km W of Taltal, Chile
M6.9 1910-09-06	1910-09-06 20:03	35 km	36 km W of Copiapó, Chile
M7.5 1909-06-08	1909-06-08 05:46	35 km	50 km WNW of Diego de Almagro, Chile
M6.6 1907-08-05	1907-08-05 06:39	15 km	97 km SW of Antofagasta, 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.