Help Ukraine

Light mag. 4.1 earthquake - 51 km northeast of Calama, Provincia de El Loa, Antofagasta, Chile, on Saturday, Oct 23, 2021 at 4:43 pm (GMT -3) -

Light mag. 4.1 earthquake - 51 km northeast of Calama, Provincia de El Loa, Antofagasta, Chile, on Saturday, Oct 23, 2021 at 4:43 pm (GMT -3) Light mag. 4.1 earthquake - 51 km northeast of Calama, Provincia de El Loa, Antofagasta, Chile, on Saturday, Oct 23, 2021 at 4:43 pm (GMT -3)

Light magnitude 4.1 earthquake at 123 km depth

23 Oct 19:55 UTC: First to report: EMSC after 11 minutes.
23 Oct 20:23: Magnitude recalculated from 3.6 to 4.1. Hypocenter depth recalculated from 110.0 to 123.0 km (from 68 to 76 mi). Epicenter location corrected by 1.1 km (0.7 mi) towards S.
Date & time: Oct 23, 2021 19:43:39 UTC -
Local time at epicenter: Saturday, Oct 23, 2021 at 4:43 pm (GMT -3)
Magnitude: 4.1
Depth: 123.0 km
Epicenter latitude / longitude: 22.06°S / 68.68°W (El Loa, Antofagasta, Chile)
Antipode: 22.06°N / 111.32°E
Nearest volcano: San Pedro (35 km / 22 mi)
Nearby towns and cities:
51 km (32 mi) NNE of Calama (pop: 143,100) --> See nearby quakes!
107 km (66 mi) NNW of San Pedro de Atacama (pop: 2,000) --> See nearby quakes!
156 km (97 mi) E of Tocopilla (pop: 24,500) --> See nearby quakes!
250 km (155 mi) NE of Antofagasta (pop: 309,800) --> See nearby quakes!
256 km (159 mi) SE of Iquique (Tarapacá) (pop: 227,500) --> See nearby quakes!
262 km (163 mi) SW of Uyuni (Antonio Quijarro, Potosí, Bolivia) (pop: 10,300) --> See nearby quakes!
267 km (166 mi) SW of Colchani (Potosí, Bolivia) (pop: 12,000) --> See nearby quakes!
300 km (187 mi) WSW of Santa Barbara (Potosí, Bolivia) (pop: 2,430) --> See nearby quakes!
340 km (212 mi) NW of San Antonio de los Cobres (Salta, Argentina) (pop: 4,000) --> See nearby quakes!
384 km (238 mi) NW of Santa Rosa de Tastil (Salta, Argentina) (pop: 2,000) --> See nearby quakes!
Weather at epicenter at time of quake:
Clear Sky 14.6°C (58 F), humidity: 10%, wind: 11 m/s (22 kts) from WNW
Primary data source: EMSC (European-Mediterranean Seismological Centre)
Estimated released energy: 8.9 x 1010 joules (24.8 megawatt hours, equivalent to 21.3 tons of TNT) | 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
4.1123 kmANTOFAGASTA, CHILEEMSC
4.1123 km50 Km NNE of Calama, ChileUSGS

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

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.