Light mag. 4.2 earthquake - 87 km north of Taltal, Provincia de Antofagasta, Chile, on Monday, Dec 28, 2020 at 3:44 am (GMT -3)
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Light magnitude 4.2 earthquake at 51 km depth
28 Dec 06:56 UTC: First to report: EMSC after 12 minutes.
28 Dec 07:08: Magnitude recalculated from 4.2 to 4.4. Hypocenter depth recalculated from 50.0 to 43.0 km (from 31 to 27 mi). Epicenter location corrected by 27 km (17 mi) towards W.
28 Dec 07:10: Hypocenter depth recalculated from 43.0 to 50.0 km (from 27 to 31 mi). Epicenter location corrected by 6.1 km (3.8 mi) towards E.
28 Dec 08:24: Now using data updates from GUG (U. Chile)
28 Dec 07:08: Magnitude recalculated from 4.2 to 4.4. Hypocenter depth recalculated from 50.0 to 43.0 km (from 31 to 27 mi). Epicenter location corrected by 27 km (17 mi) towards W.
28 Dec 07:10: Hypocenter depth recalculated from 43.0 to 50.0 km (from 27 to 31 mi). Epicenter location corrected by 6.1 km (3.8 mi) towards E.
28 Dec 08:24: Now using data updates from GUG (U. Chile)
Update Mon, 28 Dec 2020, 07:03
Light tremor of magnitude 4.2 just reported 87 km north of Taltal, Chile4.2 quake 28 Dec 3:44 am (GMT -3)
An earthquake of magnitude 4.2 occurred early morning on Monday 28 December 2020 at 3:44 am local time near Taltal, Provincia de Antofagasta, Antofagasta, Chile, as reported by the European-Mediterranean Seismological Centre (EMSC).
According to preliminary data, the quake was located at a moderately shallow depth of 50 km. The exact magnitude, epicenter, and depth of the quake might be revised within the next few hours or minutes as seismologists review data and refine their calculations, or as other agencies issue their report.
Towns or cities near the epicenter where the quake might have been felt as very weak shaking include Taltal (pop. 10,000) located 87 km from the epicenter.
According to preliminary data, the quake was located at a moderately shallow depth of 50 km. The exact magnitude, epicenter, and depth of the quake might be revised within the next few hours or minutes as seismologists review data and refine their calculations, or as other agencies issue their report.
Towns or cities near the epicenter where the quake might have been felt as very weak shaking include Taltal (pop. 10,000) located 87 km from the epicenter.
Earthquake data
Earthquake details
| Date & time | Dec 28, 2020 06:44:07 UTC |
| Local time at epicenter | Monday, Dec 28, 2020 at 3:44 am (GMT -3) |
| Status | Confirmed |
| Magnitude | 4.2 |
| Depth | 50.5 km |
| Epicenter latitude / longitude | 24.63°S / 70.37°W  (South Pacific Ocean, Antofagasta, Chile) |
| Antipode | 24.63°N / 109.63°E |
| Shaking intensity | Weak shaking near epicenter |
| Felt | 0 reports |
| Primary data source | GUG (U. Chile) |
| Nearest volcano | La Negrillar (183 km / 114 mi) |
| Nearby towns and cities | 87 km (54 mi) N of Taltal (Antofagasta) (pop: 10,000) | Show on map | Quakes nearby 109 km (68 mi) S of Antofagasta (pop: 309,800) | Show on map | Quakes nearby 196 km (122 mi) N of Diego de Almagro (Atacama) (pop: 18,100) | Show on map | Quakes nearby 283 km (176 mi) SSW of Calama (pop: 143,100) | Show on map | Quakes nearby 292 km (181 mi) SW of San Pedro de Atacama (pop: 2,000) | Show on map | Quakes nearby 982 km (610 mi) N of Santiago de Chile (Metropolitana) (pop: 4,837,300) | Show on map | Quakes nearby |
| Estimated seismic energy released | 1.3 x 1011 joules (35 megawatt hours, equivalent to 30.1 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 |
| 4.2 | 51 km | 87 Km Al N De Taltal, Chile | GUG (U. Chile) |
| 4.4 | 45 km | 87 Km N of Taltal, Chile | USGS |
| 4.4 | 50 km | - 87 km N of Taltal, Chile | EMSC |
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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