Help Ukraine

Major magnitude 7.4 earthquake - Taisha, 106 km southeast of Macas, Ecuador, on Tuesday, July 27, 1971 at 02:02 GMT

Major magnitude 7.4 earthquake - Taisha, 106 km southeast of Macas, Ecuador, on Tuesday, July 27, 1971 at 02:02 GMT Major magnitude 7.4 earthquake - Taisha, 106 km southeast of Macas, Ecuador, on Tuesday, July 27, 1971 at 02:02 GMT

Major magnitude 7.4 earthquake at 120 km depth

1 Jan 00:00 UTC: First to report: USGS after 30 seconds.
Date & time: Jul 27, 1971 02:02:49 UTC
Magnitude: 7.4
Depth: 120.0 km
Epicenter latitude / longitude: 2.839°S / 77.322°W (Taisha, Provincia de Morona-Santiago, Ecuador)
Antipode: 2.839°N / 102.678°E
Nearest volcano: Sangay (147 km / 91 mi)
Nearby towns and cities:
103 km (64 mi) ESE of Sucua (Morona-Santiago) (pop: 7,410) --> See nearby quakes!
106 km (66 mi) ESE of Macas (Morona, Morona-Santiago) (pop: 23,700) --> See nearby quakes!
162 km (101 mi) E of Gualaceo (Azuay) (pop: 17,100) --> See nearby quakes!
169 km (105 mi) SSE of Puyo (Pastaza, Provincia de Pastaza) (pop: 24,900) --> See nearby quakes!
170 km (106 mi) E of Azogues (Provincia de Cañar) (pop: 34,900) --> See nearby quakes!
187 km (116 mi) E of Cuenca (Azuay) (pop: 277,000) --> See nearby quakes!
196 km (122 mi) SE of Riobamba (Chimborazo) (pop: 124,500) --> See nearby quakes!
228 km (142 mi) SE of Ambato (Provincia de Tungurahua) (pop: 154,400) --> See nearby quakes!
294 km (183 mi) ESE of Guayaquil (Guayas) (pop: 1,952,000) --> See nearby quakes!
320 km (199 mi) SSE of Quito (Pichincha) (pop: 1,399,800) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 7.9 x 1015 joules (2206 gigawatt hours, equivalent to 1.9 x 106 tons of TNT or 118.7 atomic bombs!) | about seismic energy
Show interactive Map
[smaller] [bigger]
If you felt this quake (or if you were near the epicenter), please share your experience and submit a short "I felt it" report! Other users would love to hear about it!
If you did NOT feel the quake although you were in the area, please report it! Your contribution is valuable to earthquake science, seismic hazard analysis and mitigation efforts. You can use your device location or the map to indicate where you were during the earthquake. Thank you!

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
7.4120 kmPeru-Ecuador border regionUSGS
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.
Volcanoes & Earthquakes - new app for Android

Aftershocks

[More info]

Recorded aftershocks, latest first (13 quakes)

Date and timeMag
Depth
LocationDetails
Jun 9, 1973 13:24
49 years ago
4.6

109 km
Datem del Marañon, Loreto, 155 km N of Moyobamba, Region de San Martin, PeruMore
Jun 4, 1973 13:14
49 years ago
4.3

177 km
Santa Clara, 30 km NE of Puyo, Canton Pastaza, Provincia del Pastaza, EcuadorMore
May 30, 1973 04:38
49 years ago
5.7

111 km
Canton Guamote, 67 km S of Riobamba, Provincia del Chimborazo, EcuadorMore
May 10, 1973 13:46
49 years ago
4.9

131 km
Canton Alausi, 51 km S of Riobamba, Provincia del Chimborazo, EcuadorMore
May 3, 1973 15:50
49 years ago
4.1

72 km
44 km SE of Riobamba, Provincia del Chimborazo, EcuadorMore
Mar 1, 1973 17:49
49 years ago
4.9

86 km
Canton Morona, Provincia de Morona-Santiago, 67 km SE of Riobamba, EcuadorMore
Feb 23, 1973 23:10
49 years ago
4.6

33 km
27 km W of Macas, Canton Morona, Provincia de Morona-Santiago, EcuadorMore
Feb 23, 1973 06:41
49 years ago
5.0

89 km
30 km N of Macas, Canton Morona, Provincia de Morona-Santiago, EcuadorMore
Feb 23, 1973 04:26
49 years ago
5.7

67 km
27 km NW of Macas, Canton Morona, Provincia de Morona-Santiago, EcuadorMore
Feb 6, 1973 04:09
49 years ago
4.8

92 km
48 km N of La Peca, Bagua, Amazonas, PeruMore
Jan 30, 1973 17:36
49 years ago
4.6

48 km
55 km N of Moyobamba, Region de San Martin, PeruMore
Jan 25, 1973 13:06
49 years ago
4.7

186 km
43 km E of Puyo, Canton Pastaza, Provincia del Pastaza, EcuadorMore
Jan 13, 1973 07:47
49 years ago
4.4

25 km
Canton Quijos, Provincia de Napo, 68 km E of Quito, EcuadorMore

Earlier earthquakes in the same area

Try our free app!
Volcanoes & Earthquakes - new app for Android
Android | iOS version
Why is there advertising on this site?
Support us - Help us upgrade our services!
We truly love working to bring you the latest volcano and earthquake data from around the world. Maintaining our website and our free apps does require, however, considerable time and resources.
We need financing to increase hard- and software capacity as well as support our editor team. We're aiming to achieve uninterrupted service wherever an earthquake or volcano eruption unfolds, and your donations can make it happen! Every donation will be highly appreciated. If you find the information useful and would like to support our team in integrating further features, write great content, and in upgrading our soft- and hardware, please make a donation (PayPal or Online credit card payment).

Planned features:
  • Improved multilanguage support
  • Tsunami alerts
  • Faster responsiveness
Thanks to your past donations, these features have been added recently:
  • Earthquake archive from 1900 onwards
  • Detailed quake stats
  • Additional seismic data sources
Download and Upgrade the Volcanoes & Earthquakes app to get one of the fastest seismic and volcano alerts online:
Android | IOS
Thank you!
Copyrights: VolcanoDiscovery and other sources as noted.
Use of material: Most texts and images, in particular photographs, on this website are protected by copyright. Further reproduction and use of without authorization is usually not consented. If you are not sure or need licensing rights for photographs, for example for publications and commercial use, please contact us.