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M6.6 earthquake, Mexico, 1921-05-01

MagnitudeM6.6mw

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Depth15 km

Time (UTC)1921-05-01 05:39

Rank in 192121 / 61among M6+

Rank since 19003917 / 14,458

Energy vs an M6×7approx.

33 km SSW of Cuyutlán, Mexico · 18.64, -104.18

M6.5+ within 300 km (largest first)

1932 M8.1M8.1

1985 M8.0M8.0

1995 M8.0M8.0

1932 M7.8M7.8

1932 M7.7M7.7

1911 M7.6M7.6

1941 M7.6M7.6

1985 M7.6M7.6

2003 M7.6M7.6

2022 M7.6M7.6

1973 M7.5M7.5

1981 M7.3M7.3

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.1 1919-07-09	1919-07-09 19:19	10 km	202 km SW of La Cruz de Loreto, Mexico
M6.5 1918-06-07	1918-06-07 21:27	60 km	12 km NW of Tumbiscatío de Ruiz, Mexico
M7.6 1911-06-07	1911-06-07 11:02	30 km	19 km W of Arteaga, Mexico
M7.3 1900-01-20	1900-01-20 06:33	–	Jalisco, 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.