Strong mag. 6.4 earthquake - Igualapa, 13 km north of Ometepec, Guerrero, Mexico, on Monday, July 2, 1984 at 04:50 (GMT)

Strong mag. 6.4 earthquake - Igualapa, 13 km north of Ometepec, Guerrero, Mexico, on Monday, July 2, 1984 at 04:50 (GMT)

Strong magnitude 6.4 earthquake at 47 km depth

1 Jan 00:00 UTC: First to report: USGS after 30 seconds.
Date & time: Jul 2, 1984 04:50:44 UTC
Magnitude: 6.4
Depth: 46.6 km
Epicenter latitude / longitude: 16.804°N / 98.441°W (Igualapa, Guerrero, Mexico)
Antipode: 16.804°S / 81.559°E
Nearest volcano: Popocatépetl (248 km / 154 mi)
Nearby towns and cities:
7 km (4 mi) NW of Santa Maria (pop: 2,230) --> See nearby quakes!
13 km (8 mi) NNW of Ometepec (pop: 24,100) --> See nearby quakes!
18 km (11 mi) WNW of Zacoalpan (pop: 4,900) --> See nearby quakes!
31 km (19 mi) E of San Luis Acatlan (pop: 8,280) --> See nearby quakes!
66 km (41 mi) NW of Santiago Pinotepa Nacional (Oaxaca) (pop: 29,600) --> See nearby quakes!
72 km (45 mi) ESE of Ayutla de los Libres (pop: 15,400) --> See nearby quakes!
84 km (52 mi) S of Tlapa de Comonfort (Tlapa) (pop: 47,000) --> See nearby quakes!
140 km (87 mi) SE of Chilpancingo (pop: 187,300) --> See nearby quakes!
156 km (97 mi) E of Acapulco de Juarez (pop: 673,500) --> See nearby quakes!
301 km (187 mi) SSE of Mexico (Ciudad de México) (pop: 12,294,200) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 2.5 x 1014 joules (69.8 gigawatt hours, equivalent to 60036 tons of TNT or 3.8 atomic bombs!) More info
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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
6.447 kmGuerrero, 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.
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Aftershocks

[More info]

Recorded aftershocks, latest first (10 quakes)

Date and timeMag
Depth
LocationDetails
Dec 12, 1984 08:46
37 years ago
3.8

62 km
San Juan Colorado, 28 km NE of Santiago Pinotepa Nacional, Oaxaca, MexicoMore
Nov 30, 1984 18:59
37 years ago
4.4

33 km
Lo de Liborio, 7.6 km W of Santiago Pinotepa Nacional, Oaxaca, MexicoMore
Nov 30, 1984 14:15
37 years ago
5.4

33 km
Corralero, 19 km SW of Santiago Pinotepa Nacional, Oaxaca, MexicoMore
Nov 3, 1984 06:33
37 years ago
4.8

39 km
North Pacific Ocean, 37 km W of Santiago Pinotepa Nacional, Oaxaca, MexicoMore
Oct 21, 1984 23:38
37 years ago
4.6

33 km
North Pacific Ocean, 29 km SW of Santiago Pinotepa Nacional, Oaxaca, MexicoMore
Oct 19, 1984 23:00
37 years ago
5.1

35 km
Paso Cuahulote, 12 km E of Ometepec, Guerrero, MexicoMore
Aug 29, 1984 00:18
37 years ago
5.1

33 km
Los Liros, 18 km E of Ometepec, Guerrero, MexicoMore
Aug 14, 1984 03:42
37 years ago
3.4

33 km
San Luis Acatlan, 32 km NW of Ometepec, Guerrero, MexicoMore
Aug 8, 1984 13:14
37 years ago
4.5

33 km
North Pacific Ocean, 56 km W of Ometepec, Guerrero, MexicoMore
Jul 6, 1984 07:46
37 years ago
4.1

33 km
North Pacific Ocean, 58 km SW of Ometepec, Guerrero, MexicoMore

Earlier earthquakes in the same area

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