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M6.6 earthquake, Guatemala, 1966-12-10

MagnitudeM6.6mw

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Depth65 km

Time (UTC)1966-12-10 13:06

Rank in 196631 / 109among M6+

Rank since 19003958 / 14,458

Energy vs an M6×7approx.

5 km NNW of Champerico, Guatemala · 14.34, -91.94

M6.5+ within 300 km (largest first)

2017 M8.2M8.2

1902 M7.8M7.8

1942 M7.7M7.7

1902 M7.5M7.5

2012 M7.4M7.4

1935 M7.3M7.3

1970 M7.3M7.3

2026 M7.3M7.3

1982 M7.3M7.3

1914 M7.2M7.2

1993 M7.2M7.2

1950 M7.2M7.2

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.2 1966-08-18	1966-08-18 10:33	65 km	14 km WSW of Retalhuleu, Guatemala
M6.5 1959-04-28	1959-04-28 11:09	25 km	9 km W of Brisas Barra de Suchiate, Mexico
M6.0 1959-01-24	1959-01-24 19:42	35 km	51 km SSW of Puerto Madero, Mexico
M6.4 1955-09-03	1955-09-03 12:36	44 km	23 km S of Puerto San José, Guatemala
M6.7 1955-08-28	1955-08-28 20:13	45 km	31 km SSW of Puerto San José, Guatemala
M6.1 1954-10-21	1954-10-21 06:51	66 km	7 km S of Guazacapán, Guatemala
M6.8 1953-11-17	1953-11-17 13:29	25 km	95 km SSW of Champerico, Guatemala
M6.0 1951-04-02	1951-04-02 00:13	55 km	41 km SSW of Acajutla, El Salvador
M6.2 1950-10-23	1950-10-23 17:48	65 km	26 km ESE of Champerico, Guatemala
M7.2 1950-10-23	1950-10-23 16:13	65 km	1 km NNW of Champerico, Guatemala

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.