Strong mag. 6.4 earthquake - El Loa, 55 km east of Calama, Provincia de El Loa, Antofagasta, Chile, on Wednesday, January 2, 1974 at 10:42 (GMT)

Strong mag. 6.4 earthquake - El Loa, 55 km east of Calama, Provincia de El Loa, Antofagasta, Chile, on Wednesday, January 2, 1974 at 10:42 (GMT)

Strong magnitude 6.4 earthquake at 105 km depth

1 Jan 00:00 UTC: First to report: USGS after 30 seconds.
Date & time: Jan 2, 1974 10:42:29 UTC
Magnitude: 6.4
Depth: 105.0 km
Epicenter latitude / longitude: 22.538°S / 68.397°W (El Loa, Antofagasta, Chile)
Antipode: 22.538°N / 111.603°E
Nearest volcano: El Tatio (43 km / 27 mi)
Nearby towns and cities:
46 km (29 mi) NNW of San Pedro de Atacama (pop: 2,000) --> See nearby quakes!
55 km (34 mi) E of Calama (pop: 143,100) --> See nearby quakes!
192 km (119 mi) ESE of Tocopilla (pop: 24,500) --> See nearby quakes!
239 km (149 mi) ENE of Antofagasta (pop: 309,800) --> See nearby quakes!
293 km (182 mi) W of Villazon (Modesto Omiste, Potosí, Bolivia) (pop: 30,300) --> See nearby quakes!
316 km (196 mi) SE of Iquique (Tarapacá) (pop: 227,500) --> See nearby quakes!
366 km (228 mi) WNW of Jujuy (Argentina) (pop: 305,900) --> See nearby quakes!
394 km (245 mi) NW of Salta (Argentina) (pop: 512,700) --> See nearby quakes!
394 km (245 mi) WSW of Tarija (Bolivia) (pop: 159,300) --> See nearby quakes!
508 km (316 mi) SW of Sucre (Chuquisaca, Bolivia) (pop: 224,800) --> 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
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
6.4105 kmAntofagasta, ChileUSGS
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 (11 quakes)

Date and timeMag
Depth
LocationDetails
Jun 22, 1974 13:24
47 years ago
4.2

139 km
El Loa, 81 km E of Calama, Provincia de El Loa, Antofagasta, ChileMore
Jun 8, 1974 14:52
48 years ago
5.0

106 km
El Loa, 45 km SE of Calama, Provincia de El Loa, Antofagasta, ChileMore
Apr 9, 1974 08:07
48 years ago
4.9

96 km
El Loa, 52 km SE of Calama, Provincia de El Loa, Antofagasta, ChileMore
Feb 4, 1974 15:40
48 years ago
4.6

118 km
El Loa, 62 km NE of Calama, Provincia de El Loa, Antofagasta, ChileMore
Jan 24, 1974 08:21
48 years ago
4.7

118 km
85 km NE of Calama, Provincia de El Loa, Antofagasta, ChileMore
Jan 12, 1974 23:46
48 years ago
4.9

91 km
El Loa, 40 km E of Calama, Provincia de El Loa, Antofagasta, ChileMore
Jan 12, 1974 09:41
48 years ago
4.7

102 km
El Loa, 59 km E of Calama, Provincia de El Loa, Antofagasta, ChileMore
Jan 9, 1974 09:04
48 years ago
4.5

113 km
El Loa, 105 km SE of Calama, Provincia de El Loa, Antofagasta, ChileMore
Jan 3, 1974 18:37
48 years ago
4.1

149 km
El Loa, 81 km E of Calama, Provincia de El Loa, Antofagasta, ChileMore
Jan 3, 1974 03:35
48 years ago
4.9

102 km
El Loa, 58 km E of Calama, Provincia de El Loa, Antofagasta, ChileMore
Jan 2, 1974 13:33
48 years ago
5.3

99 km
61 km E of Calama, Provincia de El Loa, Antofagasta, ChileMore

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.