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Major magnitude 7.9 earthquake - 17 km south of Miahuatlan de Porfirio Diaz, Oaxaca, Mexico, on Sunday, June 17, 1928 at 03:19 GMT

Major magnitude 7.9 earthquake - 17 km south of Miahuatlan de Porfirio Diaz, Oaxaca, Mexico, on Sunday, June 17, 1928 at 03:19 GMT Major magnitude 7.9 earthquake - 17 km south of Miahuatlan de Porfirio Diaz, Oaxaca, Mexico, on Sunday, June 17, 1928 at 03:19 GMT

Major magnitude 7.9 earthquake at 20 km depth

Earthquake details

Date & timeJun 17, 1928 03:19:34 UTC
Local time at epicenter
Depth20.0 km
Epicenter latitude / longitude16.182°N / 96.585°W (Santa Lucía Miahuatlán, Oaxaca, Mexico)
Antipode16.182°S / 83.415°E
Shaking intensitySevere shaking near epicenter
Felt0 reports
Primary data sourceUSGS (United States Geological Survey)
Nearby towns and cities3 km (2 mi) ESE of Santa Lucia (pop: 1,610) | Show on map | Quakes nearby
17 km (10 mi) S of Miahuatlan de Porfirio Diaz (Miahuatlán de Porfirio Díaz) (pop: 23,900) | Show on map | Quakes nearby
24 km (15 mi) SW of San Cristobal (pop: 4,100) | Show on map | Quakes nearby
63 km (39 mi) NE of Puerto Escondido (pop: 25,900) | Show on map | Quakes nearby
67 km (41 mi) NW of Crucecita (pop: 15,100) | Show on map | Quakes nearby
68 km (43 mi) S of Ocotlan de Morelos (pop: 15,000) | Show on map | Quakes nearby
95 km (59 mi) S of San Antonio de la Cal (pop: 20,200) | Show on map | Quakes nearby
96 km (59 mi) S of Santa Cruz Xoxocotlan (pop: 67,100) | Show on map | Quakes nearby
99 km (62 mi) S of Oaxaca (pop: 255,000) | Show on map | Quakes nearby
450 km (280 mi) SE of Mexico (Ciudad de México) (pop: 12,294,200) | Show on map | Quakes nearby
Estimated seismic energy released4.5 x 1016 joules (12408 gigawatt hours, equivalent to 1.1 x 107 tons of TNT or 667.2 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.
7.920 kmOaxaca, 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.


[More info]

Recorded aftershocks, latest first (2 quakes)

Date and timeMag
Oct 9, 1928 03:01
95 years ago

25 km
4.8 km N of Santa Maria Acatepec, MexicoMore
Aug 4, 1928 18:26
95 years ago

20 km
41 km SW of Santiago Pinotepa Nacional, Oaxaca, MexicoMore

Earlier earthquakes in the same area

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