Strong mag. 5.4 earthquake - San Pedro el Alto, 34 km south of Miahuatlan de Porfirio Diaz, Oaxaca, Mexico, on Thursday, December 28, 1978 at 19:48 (GMT)
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Strong magnitude 5.4 earthquake at 33 km depth
1 Jan 00:00 UTC: First to report: USGS after 30 seconds.
Depth: 33.0 km
Epicenter latitude / longitude: 16.047°N / 96.476°W↗ (San Pedro el Alto, Oaxaca, Mexico)
Antipode: 16.047°S / 83.524°E↗
Nearby towns and cities:
5 km (3 mi) S of San Miguel Suchixtepec (pop: 1,800) --> See nearby quakes!
14 km (8 mi) N of Candelaria Loxicha (pop: 2,070) --> See nearby quakes!
29 km (18 mi) NW of Santa Maria (pop: 7,410) --> See nearby quakes!
34 km (21 mi) N of San Pedro Pochutla (pop: 13,700) --> See nearby quakes!
34 km (21 mi) SSE of Miahuatlan de Porfirio Diaz (Miahuatlán de Porfirio Díaz) (pop: 23,900) --> See nearby quakes!
48 km (30 mi) NW of Crucecita (pop: 15,100) --> See nearby quakes!
67 km (42 mi) ENE of Puerto Escondido (pop: 25,900) --> See nearby quakes!
85 km (53 mi) SSE of Ocotlan de Morelos (pop: 15,000) --> See nearby quakes!
116 km (72 mi) SSE of Oaxaca (pop: 255,000) --> See nearby quakes!
469 km (292 mi) SE of Mexico City (pop: 12,294,200) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 7.9 x 1012 joules (2.21 gigawatt hours, equivalent to 1898 tons of TNT or 0.1 atomic bombs!) 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.
|5.4||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.
Recorded aftershocks, latest first (1 quake)
- 10 Jan 1979 04:29 UTC| M 5.1 |33 km (20.5 mi) depth|15 km (9 mi) distance| USGS | Details