Mag. 4.2 earthquake - Oaxaca, Mexico, on Monday, 20 September 1976 at 18:04 (GMT)
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Light magnitude 4.2 earthquake at 33 km depth
Depth: 33.0 km
Epicenter latitude / longitude: 18.21°N / 97.72°W (Mexico)
Nearest volcano: Pico de Orizaba (103 km / 64 mi)
Nearby towns and cities:
3 km (2 mi) SSE of Escalerillas (pop: 12) --> See nearby quakes!
20 km (13 mi) E of San Jeronimo Xayacatlan (pop: 1,160) --> See nearby quakes!
25 km (16 mi) NE of Petlalcingo (pop: 2,620) --> See nearby quakes!
35 km (22 mi) E of Acatlan de Osorio (Acatlán de Osorio) (pop: 16,300) --> See nearby quakes!
44 km (28 mi) SW of Tehuacan (pop: 248,700) --> See nearby quakes!
45 km (28 mi) N of Ciudad de Huajuapan de Leon (pop: 53,000) --> See nearby quakes!
48 km (30 mi) WSW of San Francisco Altepexi (Altepexi) (pop: 18,200) --> See nearby quakes!
52 km (32 mi) WSW of Zinacatepec (pop: 15,600) --> See nearby quakes!
52 km (32 mi) WSW of Ajalpan (pop: 28,000) --> See nearby quakes!
201 km (125 mi) SE of Mexiko (pop: 12,294,200) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 1.3 x 1011 joules (35 megawatt hours, equivalent to 30.1 tons of TNT) More info
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.
|M 4.2||33 km||Oaxaca, Mexico||USGS|
User reports for this quake
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.