Light mag. 4.0 earthquake - South Pacific Ocean, 157 km west of Valdivia, Los Rios Region, Chile, on Sunday, 27 Dec 2020 8:05 pm (GMT -5) -
This quake was likely an aftershock of the 6.7 quake South Pacific Ocean, 145 km west of Valdivia, Los Rios Region, Chile, 27 Dec 2020 4:39 pm (GMT -5), which had occurred 3 hours earlier.
Quake Data | Interactive map | User Reports | Earlier quakes in same area | Quakes in Chile| Los Rios Region | Araucania | Los Lagos Region | Region del Biobio | Santiago Metropolitan

Light magnitude 4.0 earthquake at 23 km depth
28 Dec 01:17 UTC: First to report: EMSC after 12 minutes.
28 Dec 01:26: Now using data updates from GUG (U. Chile)
28 Dec 01:54: Magnitude recalculated from 3.9 to 4.0. Hypocenter depth recalculated from 23.5 to 23.2 km (from 14.6 to 14.4 mi).
28 Dec 01:26: Now using data updates from GUG (U. Chile)
28 Dec 01:54: Magnitude recalculated from 3.9 to 4.0. Hypocenter depth recalculated from 23.5 to 23.2 km (from 14.6 to 14.4 mi).
Date & time: 28 Dec 2020 01:05:27 UTC -
Local time at epicenter: Sunday, 27 Dec 2020 8:05 pm (GMT -5)
Magnitude: 4
Depth: 23.2 km
Epicenter latitude / longitude: 39.414°S / 75.004°W

Nearby towns and cities:
138 km (85 mi) WNW of Vuelta de la Zorra (pop: 50) --> See nearby quakes!
157 km (98 mi) WNW of Valdivia (pop: 133,400) --> See nearby quakes!
159 km (99 mi) WNW of Las Animas (pop: 30,000) --> See nearby quakes!
191 km (119 mi) WNW of La Union (Ranco) (pop: 26,300) --> See nearby quakes!
192 km (120 mi) WSW of Nueva Imperial (Cautín) (pop: 18,800) --> See nearby quakes!
205 km (127 mi) NW of Osorno (pop: 135,800) --> See nearby quakes!
221 km (137 mi) WSW of Temuco (pop: 238,100) --> See nearby quakes!
288 km (179 mi) NW of Port Montt (pop: 160,100) --> See nearby quakes!
342 km (212 mi) SSW of Talcahuano (pop: 253,000) --> See nearby quakes!
768 km (478 mi) SSW of Santiago de Chile (pop: 4,837,300) --> See nearby quakes!
Weather at epicenter at time of quake:
Clear Sky
17°C (63 F), humidity: 92%, wind: 4 m/s (8 kts) from W
Primary data source: GUG (U. Chile)Clear Sky

Estimated released energy: 6.3 x 1010 joules (17.5 megawatt hours, equivalent to 15.1 tons of TNT) More info
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.
Magnitude | Depth | Location | Source |
M 4.0 | 23 km | 157 Km Al O De Valdivia, Chile | GUG (U. Chile) |
M 3.9 | 24 km | OFF COAST OF LOS LAGOS, CHILE | EMSC |
M 4.6 | 10 km | 142 Km WNW of Corral, Chile | USGS |
User reports for this quake
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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There are no user reports for this quake yet. If you felt it Earlier earthquakes in the same area since 1900
- Date / time UTC| Mag |Depth|Age|Distance| Details
- 22 May 1960 19:11| 9.5 |25km / 16mi|61 years ago|198km / 123mi| Arauco, 38 km S of Kanyete, Provincia de Arauco, Region del Biobio, Chile
- 21 May 1960 10:02| 8.1 |25km / 16mi|61 years ago|228km / 141mi| 4.6 km SE of Kanyete, Provincia de Arauco, Region del Biobio, Chile
- 22 May 1960 18:56| 7.8 |25km / 16mi|61 years ago|227km / 141mi| Malleco Province, 41 km SW of Angol, Provincia de Malleco, Araucania, Chile
- 10 May 1975 14:27| 7.7 |6km / 3.7mi|46 years ago|206km / 128mi| Arauco, Region del Biobio, 83 km NW of Temuco, Provincia de Cautin, Araucania, Chile
- 27 Feb 2010 08:01| 7.4 |35km / 22mi|11 years ago|183km / 113mi| South Pacific Ocean, 124 km W of Lebu, Provincia de Arauco, Region del Biobio, Chile
- 01 Nov 1960 08:45| 7.4 |20km / 12.4mi|60 years ago|105km / 65mi| South Pacific Ocean, 214 km W of Temuco, Provincia de Cautin, Araucania, Chile
- 02 Jan 2011 20:20| 7.2 |24km / 15mi|10 years ago|187km / 116mi| Malleco, Araucanía, 42 km N of Carahue, Provincia de Cautin, Araucania, Chile
- 18 Aug 1974 10:44| 7.1 |36km / 22mi|47 years ago|173km / 108mi| Cautín Province, Region del Biobio, 79 km NW of Temuco, Provincia de Cautin, Araucania, Chile
- 20 Jun 1960 02:01| 7.0 |25km / 16mi|61 years ago|229km / 142mi| Malleco, 24 km NW of Traiguén, Provincia de Malleco, Araucania, Chile
- 27 Dec 2020 21:39| 6.7 |27km / 16mi|9 weeks ago|18km / 11mi| South Pacific Ocean, 145 km W of Valdivia, Los Rios Region, Chile
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