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Minor mag. 3.9 earthquake - 237 km southeast of Calama, Provincia de El Loa, Antofagasta, Chile, on Thursday, Oct 21, 2021 at 7:57 am (GMT -3) -

Minor mag. 3.9 earthquake - 237 km southeast of Calama, Provincia de El Loa, Antofagasta, Chile, on Thursday, Oct 21, 2021 at 7:57 am (GMT -3) Minor mag. 3.9 earthquake - 237 km southeast of Calama, Provincia de El Loa, Antofagasta, Chile, on Thursday, Oct 21, 2021 at 7:57 am (GMT -3)

Minor magnitude 3.9 earthquake at 221 km depth

21 Oct 11:02 UTC: First to report: EMSC after 5 minutes.
21 Oct 11:07: Magnitude recalculated from 3.9 to 3.7. Hypocenter depth recalculated from 228.0 to 205.0 km (from 142 to 127 mi). Epicenter location corrected by 35 km (22 mi) towards ENE.
21 Oct 11:17: Magnitude recalculated from 3.7 to 3.9. Hypocenter depth recalculated from 205.0 to 221.0 km (from 127 to 137 mi). Epicenter location corrected by 36 km (22 mi) towards W.
Date & time: Oct 21, 2021 10:57:27 UTC -
Local time at epicenter: Thursday, Oct 21, 2021 at 7:57 am (GMT -3)
Magnitude: 3.9
Depth: 221.0 km
Epicenter latitude / longitude: 24.13°S / 67.48°W (Provincia de El Loa, Antofagasta, Chile)
Antipode: 24.13°N / 112.52°E
Nearest volcano: Aracar (32 km / 20 mi)
Nearby towns and cities:
118 km (73 mi) W of San Antonio de los Cobres (Salta, Argentina) (pop: 4,000) --> See nearby quakes!
154 km (96 mi) SSE of San Pedro de Atacama (pop: 2,000) --> See nearby quakes!
157 km (97 mi) WNW of Santa Rosa de Tastil (Salta, Argentina) (pop: 2,000) --> See nearby quakes!
206 km (128 mi) WNW of Campo Quijano (Salta, Argentina) (pop: 5,000) --> See nearby quakes!
210 km (130 mi) WSW of Aguilar (Jujuy, Argentina) (pop: 3,660) --> See nearby quakes!
225 km (140 mi) WNW of Chicoana (Salta, Argentina) (pop: 8,470) --> See nearby quakes!
237 km (148 mi) SE of Calama (pop: 143,100) --> See nearby quakes!
240 km (149 mi) SW of Abra Pampa (Cochinoca, Jujuy, Argentina) (pop: 9,430) --> See nearby quakes!
301 km (187 mi) E of Antofagasta (pop: 309,800) --> See nearby quakes!
Weather at epicenter at time of quake:
Clear Sky -1.9°C (29 F), humidity: 11%, wind: 3 m/s (5 kts) from NNW
Primary data source: EMSC (European-Mediterranean Seismological Centre)
Estimated released energy: 4.5 x 1010 joules (12.4 megawatt hours, equivalent to 10.7 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.
3.7192 kmSALTA (Argentina)INPRES

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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