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M7.3 earthquake, Mexico, 1981-10-25

MagnitudeM7.3ms

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Depth33 km

Time (UTC)1981-10-25 03:22

Rank in 19813 / 83among M6+

Rank since 1900727 / 14,458

Energy vs an M6×89approx.

7 km NNE of Petacalco, Mexico · 18.05, -102.08

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

1979 M7.6M7.6

1985 M7.6M7.6

2003 M7.6M7.6

2022 M7.6M7.6

1911 M7.5M7.5

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M7.6 1979-03-14	1979-03-14 11:07	49 km	12 km SSE of Vallecitos de Zaragoza, Mexico
M6.6 1979-01-26	1979-01-26 10:04	41 km	15 km N of San Luis de La Loma, Mexico
M6.4 1978-03-19	1978-03-19 01:39	36 km	4 km NW of Sabanillas, Mexico
M6.4 1976-06-07	1976-06-07 14:26	45 km	19 km N of El Súchil, Mexico
M6.1 1974-01-26	1974-01-26 05:35	33 km	10 km E of Aquila, Mexico
M7.5 1973-01-30	1973-01-30 21:01	43 km	35 km SW of Aguililla, Mexico
M6.3 1968-07-02	1968-07-02 03:44	57 km	12 km W of Pueblo Viejo, Mexico
M6.2 1968-04-26	1968-04-26 17:48	38 km	5 km ENE of Aquila, Mexico
M6.0 1966-09-25	1966-09-25 06:02	80 km	9 km WNW of Placeres del Oro, Mexico
M6.4 1965-12-09	1965-12-09 06:07	44 km	4 km WNW of Las Compuertas, 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.