Moderate mag. 5.7 earthquake - Choapa, 34 km southwest of Illapel, Provincia de Choapa, Coquimbo Region, Chile, on Monday, 21 September 2015 at 19:56 (GMT)

This quake was likely an aftershock of the 7.8 quake Choapa, 36 km west of Illapel, Provincia de Choapa, Coquimbo Region, Chile, 16 September 2015 22:54 GMT, which had occurred 5 days earlier.
Moderate mag. 5.7 earthquake  - Choapa, 34 km southwest of Illapel, Provincia de Choapa, Coquimbo Region, Chile, on Monday, 21 September 2015 at 19:56 (GMT)

Moderate magnitude 5.7 earthquake at 31 km depth

21 Sep 20:00 UTC: First to report: GFZ after 4 minutes.
Hypocenter depth recalculated from 32.0 to 31.0 km.
Date & time: 21 Sep 2015 19:56:09 UTC
Magnitude: 5.7
Depth: 31.0 km
Epicenter latitude / longitude: 31.79°S / 71.48°W (Choapa, Coquimbo Region, Chile)
Nearby towns and cities:
34 km (21 mi) WSW of Illapel (Choapa, Coquimbo Region) (pop: 22,800) --> See nearby quakes!
49 km (30 mi) W of Salamanca (Choapa, Coquimbo Region) (pop: 13,300) --> See nearby quakes!
201 km (125 mi) NNW of Santiago (Santiago Metropolitan) (pop: 4,837,300) --> See nearby quakes!
211 km (131 mi) S of La Serena (Coquimbo Region) (pop: 154,500) --> See nearby quakes!
Primary data source: GFZ (German Research Centre for Geosciences)
Estimated released energy: 2.2 x 1013 joules (6.22 gigawatt hours, equivalent to 5351 tons of TNT or 0.3 atomic bombs!) More info
[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!
Also if you did NOT feel the quake although you were in the area, please report it! Your contribution is valuable also to earthquake science and earthquake 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.
M 5.731 kmNear Coast of Central ChileGFZ
M 6.037 km18 km al NO de Los VilosGUG (U. Chile)

User reports for this quake (9)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Leave a comment if you find a particular report interesting or want to add to it.
Flag as inappropriate.
Mark as helpful or interesting.
Send your own user report!
Mendoza / Very weak shaking (MMI II)
Santlago / Moderate shaking (MMI V) : I felt it too
Santiago (197.6 km SSE of epicenter) [Map] / Light shaking (MMI IV) : Very fast. It lasted only a few seconds
Providencia (Chile, 206 km SE of epicenter) : I was on the second floor, taking a nap. Slept right through it. (reported through EMSC)
La Serena (Chile, 204 km N of epicenter) : gentle and short (reported through EMSC)
Valparaíso (Chile, 146 km S of epicenter) : movimiento ondulatorio, de unos 20-30seg (reported through EMSC)
Las Condes (Chile, 215 km SE of epicenter) : Piso 12 fuerte sacudida y vaiven en 2 tiempos (reported through EMSC)
(Chile, 214 km SE of epicenter) : Only felt a tiny trimmer here in Los Condes. (reported through EMSC)
La Serena (Chile, 203 km N of epicenter) : gentle swaying long (reported through EMSC)
Volcanoes & Earthquakes - new app for Android

Earlier earthquakes in the same area

Moderate mag. 5.7 earthquake - Choapa, 34 km southwest of Illapel, Provincia de Choapa, Coquimbo Region, Chile, on Monday, 21 September 2015 at 19:56 (GMT)
Volcanoes & Earthquakes - new app for Android
Why is there advertising on this site?

Support us - Help us upgrade our server!

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.
Our server is reaching its limits and we need financing to increase capacity in order to deal with huge activity peaks when quakes occur. We're aiming to achieve uninterrupted service wherever an earthquake or volcano eruption unfolds, and your donations can make it happen! Every penny counts and every donation will be highly appreciated. If you find the information useful and would like to support our team in integrating further features and in upgrading our software, please make a donation (PayPal or Online cc payment).

Planned features:
  • Weather reports
  • Tsunami alerts
  • Design upgrades
  • Faster responsiveness
Thanks to your past donations, these features have been added recently:
  • Earthquake archive from 1900 onwards
  • Additional seismic data sources
  • Improved content in English
Download and Upgrade the Volcanoes & Earthquakes app to get one of the fastest seismic and volcano alerts online:
Android | IOS
Thank you! With best regards from the VolcanoDiscovery team.
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.