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Major magnitude 7.3 earthquake - 60 km southwest of Tapachula de Cordova y Ordoñez, Chiapas, Mexico, on Wednesday, April 29, 1970 at 14:01 GMT

Major magnitude 7.3 earthquake - 60 km southwest of Tapachula de Cordova y Ordoñez, Chiapas, Mexico, on Wednesday, April 29, 1970 at 14:01 GMT Major magnitude 7.3 earthquake - 60 km southwest of Tapachula de Cordova y Ordoñez, Chiapas, Mexico, on Wednesday, April 29, 1970 at 14:01 GMT

Major magnitude 7.3 earthquake at 35 km depth

Earthquake details

Date & timeApr 29, 1970 14:01:35 UTC
Local time at epicenter
StatusConfirmed
Magnitude7.3
Depth35.0 km
Epicenter latitude / longitude14.52°N / 92.653°W (North Pacific Ocean, Mexico)
Antipode14.52°S / 87.347°E
Shaking intensityVery strong shaking near epicenter
Felt0 reports
Primary data sourceUSGS (United States Geological Survey)
Nearest volcanoTacana (89 km / 55 mi)
Nearby towns and cities33 km (21 mi) SW of Puerto Madero (Tapachula) (pop: 9,560) | Show on map | Quakes nearby
44 km (27 mi) SSW of Mazatlan (Mazatán) (pop: 6,840) | Show on map | Quakes nearby
46 km (29 mi) W of Brisas Barra de Suchiate (pop: 13,700) | Show on map | Quakes nearby
57 km (35 mi) WSW of Ciudad Hidalgo (pop: 14,600) | Show on map | Quakes nearby
60 km (37 mi) SW of Tapachula de Cordova y Ordoñez (pop: 202,700) | Show on map | Quakes nearby
63 km (39 mi) SSW of Huehuetan (Huehuetán) (pop: 7,760) | Show on map | Quakes nearby
72 km (45 mi) SSW of Huixtla (pop: 32,000) | Show on map | Quakes nearby
74 km (46 mi) SW of Cacahoatan (Cacahoatán) (pop: 16,600) | Show on map | Quakes nearby
87 km (54 mi) WSW of Coatepec (Guatemala) (pop: 45,700) | Show on map | Quakes nearby
879 km (546 mi) SE of Mexico (pop: 12,294,200) | Show on map | Quakes nearby
Estimated seismic energy released5.6 x 1015 joules (1562 gigawatt hours, equivalent to 1.3 x 106 tons of TNT or 84 atomic bombs!) | about seismic energy
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Data for the same earthquake reported by different agencies

Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.
Mag.DepthLocationSource
7.335 kmoffshore Chiapas, MexicoUSGS
Note: for quakes of 2012 and earlier, our database often contains only records from USGS.

User reports for this quake

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
There are no user reports for this quake.

Aftershocks

[More info]

Recorded aftershocks, latest first (13 quakes)

Date and timeMag
Depth
LocationDetails
Jan 22, 1972 13:08
51 years ago
5.8

73 km
La Gomera, 52 km SW of Escuintla, Departamento de Escuintla, GuatemalaMore
Oct 12, 1971 09:44
52 years ago
5.7

25 km
Departamento del Quiché, 81 km NE of Huehuetenango, GuatemalaMore
Sep 22, 1971 14:14
52 years ago
5.9

23 km
142 km S of Tonala, Chiapas, MexicoMore
Aug 20, 1971 21:36
52 years ago
6.0

28 km
253 km SW of Guatemala, Departamento de GuatemalaMore
May 28, 1971 14:12
52 years ago
5.6

120 km
Departamento de Solola, 22 km SE of Quetzaltenango, GuatemalaMore
Dec 24, 1970 08:00
52 years ago
5.9

102 km
23 km SE of Tonala, Chiapas, MexicoMore
May 15, 1970 09:44
53 years ago
5.8

35 km
97 km SW of Tapachula de Cordova y Ordoñez, Chiapas, MexicoMore
May 2, 1970 02:06
53 years ago
5.9

35 km
150 km SW of Huixtla, Chiapas, MexicoMore
May 1, 1970 08:35
53 years ago
5.8

35 km
123 km SW of Tapachula de Cordova y Ordoñez, Chiapas, MexicoMore
Apr 30, 1970 13:21
53 years ago
5.8

35 km
126 km W of Tapachula de Cordova y Ordoñez, Chiapas, MexicoMore
Apr 30, 1970 12:51
53 years ago
6.0

35 km
136 km SW of Tapachula de Cordova y Ordoñez, Chiapas, MexicoMore
Apr 30, 1970 08:33
53 years ago
6.6

35 km
114 km W of Tapachula de Cordova y Ordoñez, Chiapas, MexicoMore
Apr 29, 1970 21:20
53 years ago
5.8

35 km
93 km SW of Mapastepec, Chiapas, MexicoMore

Earlier earthquakes in the same area

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