Light mag. 4.3 earthquake - South Pacific Ocean, 74 km southwest of San Antonio, Region de Valparaiso, Chile, on 19 Apr 11:02 am (GMT -4) -

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 hour and 57 minutes earlier.
Light mag. 4.3 earthquake - South Pacific Ocean, 74 km southwest of San Antonio, Region de Valparaiso, Chile, on 19 Apr 11:02 am (GMT -4) Light mag. 4.3 earthquake - South Pacific Ocean, 74 km southwest of San Antonio, Region de Valparaiso, Chile, on 19 Apr 11:02 am (GMT -4)

Light magnitude 4.3 earthquake at 38 km depth

19 Apr 15:20 UTC: First to report: GUG (U. Chile) after 18 minutes.
19 Apr 15:46: Magnitude recalculated from 4.2 to 4.3. Hypocenter depth recalculated from 37.6 to 37.7 km (from 23 to 23 mi). Epicenter location corrected by 2.4 km (1.5 mi) towards W.

Earthquake details

Date & timeApr 19, 2021 15:02:10 UTC -
Local time at epicenter19 Apr 11:02 am (GMT -4)
StatusConfirmed
Magnitude4.3
Depth37.7 km
Epicenter latitude / longitude33.99°S / 72.258°W (South Pacific Ocean, Chile)
Antipode33.99°N / 107.742°E
Shaking intensityWeak shaking near epicenter
Felt0 reports
Primary data sourceGUG (U. Chile)
Nearest volcanoPalomo (191 km / 119 mi)
Nearby towns and cities74 km (46 mi) SW of San Antonio (pop: 85,700) | Show on map | Quakes nearby
77 km (48 mi) SW of Cartagena (San Antonio) (pop: 16,900) | Show on map | Quakes nearby
102 km (63 mi) WSW of Melipilla (pop: 63,100) | Show on map | Quakes nearby
121 km (75 mi) SSW of Valparaiso (pop: 282,400) | Show on map | Quakes nearby
126 km (78 mi) SSW of Viña del Mar (pop: 294,600) | Show on map | Quakes nearby
129 km (80 mi) SW of Quilpué (pop: 130,300) | Show on map | Quakes nearby
141 km (88 mi) W of Rancagua (pop: 212,700) | Show on map | Quakes nearby
160 km (100 mi) WSW of Santiago de Chile (pop: 4,837,300) | Show on map | Quakes nearby
161 km (100 mi) WSW of Puente Alto (pop: 510,400) | Show on map | Quakes nearby
169 km (105 mi) NNW of Talca (pop: 197,500) | Show on map | Quakes nearby
Weather at epicenter at time of quakeHaze 14°C (57 F), humidity: 82%, wind: 4 m/s (7 kts) from N
Estimated seismic energy released1.8 x 1011 joules (49.4 megawatt hours, equivalent to 42.5 tons of TNT) | about seismic energy
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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
4.338 km40 Km Al O De Navidad, ChileGUG (U. Chile)
4.410 kmOFFSHORE O'HIGGINS, CHILEEMSC
4.410 km78 Km WSW of San Antonio, ChileUSGS
4.310 kmOff Coast of Central ChileGFZ

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.
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