Weak mag. 3.1 earthquake - South Pacific Ocean, 77 km southwest of San Antonio, Region de Valparaiso, Chile, on Wednesday, April 21, 2021 at 05:43 GMT -
This quake was likely an aftershock of the 5.1 quake South Pacific Ocean, 77 km southwest of San Antonio, Region de Valparaiso, Chile, 19 Apr 9:05 am (GMT -4), which had occurred 1 day 17 hours earlier.
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Weak magnitude 3.1 earthquake at 25 km depth
21 Apr 05:54 UTC: First to report: GUG (U. Chile) after 10 minutes.
Earthquake details
Date & time | Apr 21, 2021 05:43:46 UTC - |
Local time at epicenter | |
Status | Confirmed |
Magnitude | 3.1 |
Depth | 25.1 km |
Epicenter latitude / longitude | 34.044°S / 72.245°W ![]() |
Antipode | 34.044°N / 107.755°E |
Shaking intensity | Very weak shaking |
Felt | 0 reports |
Primary data source | GUG (U. Chile) |
Nearest volcano | Palomo (190 km / 118 mi) |
Nearby towns and cities | 77 km (48 mi) SW of San Antonio (pop: 85,700) | Show on map | Quakes nearby 80 km (50 mi) SW of Cartagena (San Antonio) (pop: 16,900) | Show on map | Quakes nearby 103 km (64 mi) WSW of Melipilla (pop: 63,100) | Show on map | Quakes nearby 126 km (78 mi) SSW of Valparaiso (pop: 282,400) | Show on map | Quakes nearby 130 km (81 mi) SSW of Viña del Mar (pop: 294,600) | Show on map | Quakes nearby 133 km (83 mi) SSW of Quilpué (pop: 130,300) | Show on map | Quakes nearby 139 km (86 mi) W of Rancagua (pop: 212,700) | Show on map | Quakes nearby 161 km (100 mi) WSW of Santiago de Chile (pop: 4,837,300) | Show on map | Quakes nearby 162 km (100 mi) WSW of Puente Alto (pop: 510,400) | Show on map | Quakes nearby |
Estimated seismic energy released | 2.8 x 109 joules (783 kilowatt hours, equivalent to 0.674 tons of TNT) | about seismic energy |
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. | Depth | Location | Source |
3.1 | 25 km | 39 Km Al O De Navidad, Chile | GUG (U. Chile) |
3.1 | 25 km | OFFSHORE O'HIGGINS, CHILE | EMSC |
User reports for this quake
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Earlier earthquakes in the same area
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