Minor mag. 2.8 earthquake - South Pacific Ocean, 79 km southwest of San Antonio, Region de Valparaiso, Chile, on Tuesday, April 20, 2021 at 08:33 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 1 day 5 hours earlier.
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Minor magnitude 2.8 earthquake at 37 km depth
20 Apr 08:43 UTC: First to report: EMSC after 10 minutes.
20 Apr 08:44: Now using data updates from GUG (U. Chile)
20 Apr 08:44: Now using data updates from GUG (U. Chile)
Earthquake details
| Date & time | Apr 20, 2021 08:33:04 UTC - |
| Local time at epicenter | |
| Status | Confirmed |
| Magnitude | 2.8 |
| Depth | 37.2 km |
| Epicenter latitude / longitude | 33.976°S / 72.328°W  (South Pacific Ocean, Chile) |
| Antipode | 33.976°N / 107.672°E |
| Shaking intensity | Very weak shaking |
| Felt | 0 reports |
| Primary data source | GUG (U. Chile) |
| Nearest volcano | Palomo (200 km / 124 mi) |
| Nearby towns and cities | 79 km (49 mi) WSW of San Antonio (pop: 85,700) | Show on map | Quakes nearby 81 km (51 mi) SW of Cartagena (San Antonio) (pop: 16,900) | Show on map | Quakes nearby 115 km (72 mi) NW of Santa Cruz (Colchagua) (pop: 33,300) | Show on map | Quakes nearby 166 km (103 mi) WSW of Santiago de Chile (pop: 4,837,300) | Show on map | Quakes nearby |
| Estimated seismic energy released | 1 x 109 joules (278 kilowatt hours, equivalent to 0.239 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 |
| 2.8 | 37 km | 46 Km Al O De Navidad, Chile | GUG (U. Chile) |
| 2.8 | 37 km | OFFSHORE O'HIGGINS, CHILE | EMSC |
User reports for this quake
At magnitude 2.8, this quake might have been felt very close to the epicenter and under calm conditions.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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