Moderate mag. 4.1 earthquake - South Pacific Ocean, 83 km southwest of San Antonio, Region de Valparaiso, Chile, on 21 Apr 4:08 am (GMT -4) -

This quake was likely an aftershock of the 5.3 quake South Pacific Ocean, 88 km southwest of San Antonio, Region de Valparaiso, Chile, 18 Apr 11:18 pm (GMT -4), which had occurred 2 days earlier.
Moderate mag. 4.1 earthquake - South Pacific Ocean, 83 km southwest of San Antonio, Region de Valparaiso, Chile, on 21 Apr 4:08 am (GMT -4)

Moderate magnitude 4.1 earthquake at 15 km depth

21 Apr 08:22 UTC: First to report: GUG (U. Chile) after 14 minutes.
Date & time: 21 Apr 2021 08:08:23 UTC -
Local time at epicenter: 21 Apr 4:08 am (GMT -4)
Magnitude: 4.1
Depth: 15.0 km
Epicenter latitude / longitude: 34.042°S / 72.329°W (South Pacific Ocean, Chile)
Nearest volcano: Palomo (197 km / 122 mi)
Nearby towns and cities:
49 km (31 mi) NW of Los Navegantes (Provincia de Cardenal Caro) (pop: 231) --> See nearby quakes!
83 km (52 mi) SW of San Antonio (pop: 85,700) --> See nearby quakes!
86 km (53 mi) SW of Cartagena (San Antonio) (pop: 16,900) --> See nearby quakes!
110 km (68 mi) WSW of Melipilla (pop: 63,100) --> See nearby quakes!
129 km (80 mi) SSW of Valparaiso (pop: 282,400) --> See nearby quakes!
134 km (83 mi) SSW of Viña del Mar (pop: 294,600) --> See nearby quakes!
147 km (91 mi) W of Rancagua (pop: 212,700) --> See nearby quakes!
166 km (103 mi) NNW of Talca (pop: 197,500) --> See nearby quakes!
169 km (105 mi) WSW of Santiago (pop: 4,837,300) --> See nearby quakes!
169 km (105 mi) WSW of Puente Alto (pop: 510,400) --> See nearby quakes!
Weather at epicenter at time of quake:
Light Rain 15.6°C (60 F), humidity: 87%, wind: 17 m/s (33 kts) from NNE
Primary data source: GUG (U. Chile)
Estimated released energy: 8.9 x 1010 joules (24.8 megawatt hours, equivalent to 21.3 tons of TNT) 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!
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.
Mag.DepthLocationSource
4.115 km47 Km Al O De Navidad, ChileGUG (U. Chile)
4.510 kmOFFSHORE O'HIGGINS, CHILEEMSC
4.510 kmNear Coast of Central ChileGFZ
4.410 km80 Km SW of San Antonio, ChileUSGS
4.410 kmNear Coast of Central ChileUSP

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 yet. If you felt it be the first to report it!
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:
  • 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!
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.