Weak mag. 3.4 earthquake - South Pacific Ocean, 86 km southwest of San Antonio, Region de Valparaiso, Chile, on Monday, April 19, 2021 at 21:29 GMT -
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 18 hours earlier.
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Weak magnitude 3.4 earthquake at 24 km depth
19 Apr 21:48 UTC: First to report: EMSC after 19 minutes.
19 Apr 21:48: Now using data updates from GUG (U. Chile)
19 Apr 22:14: Hypocenter depth recalculated from 23.7 to 24.1 km (from 14.7 to 15 mi). Epicenter location corrected by 2.1 km (1.3 mi) towards E.
19 Apr 21:48: Now using data updates from GUG (U. Chile)
19 Apr 22:14: Hypocenter depth recalculated from 23.7 to 24.1 km (from 14.7 to 15 mi). Epicenter location corrected by 2.1 km (1.3 mi) towards E.
Earthquake details
| Date & time | Apr 19, 2021 21:29:22 UTC - |
| Local time at epicenter | |
| Status | Confirmed |
| Magnitude | 3.4 |
| Depth | 24.1 km |
| Epicenter latitude / longitude | 34.026°S / 72.374°W  (South Pacific Ocean, Chile) |
| Antipode | 34.026°N / 107.626°E |
| Shaking intensity | Weak shaking near epicenter |
| Felt | 0 reports |
| Primary data source | GUG (U. Chile) |
| Nearest volcano | Palomo (204 km / 127 mi) |
| Nearby towns and cities | 86 km (53 mi) SW of San Antonio (pop: 85,700) | Show on map | Quakes nearby 88 km (55 mi) SW of Cartagena (San Antonio) (pop: 16,900) | Show on map | Quakes nearby 113 km (70 mi) WSW of Melipilla (pop: 63,100) | Show on map | Quakes nearby 130 km (81 mi) SSW of Valparaiso (pop: 282,400) | Show on map | Quakes nearby 135 km (84 mi) SW of Viña del Mar (pop: 294,600) | Show on map | Quakes nearby 139 km (86 mi) SW of Quilpué (pop: 130,300) | Show on map | Quakes nearby 151 km (94 mi) W of Rancagua (pop: 212,700) | Show on map | Quakes nearby 169 km (105 mi) NNW of Talca (pop: 197,500) | Show on map | Quakes nearby 172 km (107 mi) WSW of Santiago de Chile (pop: 4,837,300) | Show on map | Quakes nearby |
| Estimated seismic energy released | 7.9 x 109 joules (2.21 megawatt hours, equivalent to 1.9 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 |
| 3.4 | 24 km | 51 Km Al O De Navidad, Chile | GUG (U. Chile) |
| 3.4 | 24 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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