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Light mag. 4.9 earthquake - 36 km northeast of Calama, Provincia de El Loa, Antofagasta, Chile, on Tuesday, Oct 4, 2022 at 10:08 am (GMT -3) -

Light mag. 4.9 earthquake - 36 km northeast of Calama, Provincia de El Loa, Antofagasta, Chile, on Tuesday, Oct 4, 2022 at 10:08 am (GMT -3) Light mag. 4.9 earthquake - 36 km northeast of Calama, Provincia de El Loa, Antofagasta, Chile, on Tuesday, Oct 4, 2022 at 10:08 am (GMT -3)

Light magnitude 4.9 earthquake at 118 km depth

4 Oct 13:11 UTC: First to report: EMSC after 2 minutes.
4 Oct 13:13: Magnitude recalculated from 5.3 to 5.2. Hypocenter depth recalculated from 102.0 to 136.0 km (from 63 to 85 mi). Epicenter location corrected by 12 km (7.5 mi) towards SW.
... [show all] ...
10 Oct 13:42: Hypocenter depth recalculated from 123.4 to 117.6 km (from 77 to 73 mi). Epicenter location corrected by 11 km (7.1 mi) towards NNE.
Update Tue, 4 Oct 2022, 13:24

Magnitude 5.2 earthquake strikes near Calama, Provincia de El Loa, Antofagasta, Chile

5.2 quake 4 Oct 10:08 am (GMT -3)
5.2 quake 4 Oct 10:08 am (GMT -3)
A magnitude 5.2 earthquake near Calama, Provincia de El Loa, Antofagasta, Chile, was reported only 15 minutes ago by the European-Mediterranean Seismological Centre (EMSC), considered one of the key international agencies that monitor seismic activity worldwide. The earthquake occurred at an intermediate depth of 138 km beneath the epicenter in the morning on Tuesday, October 4th, 2022, at 10:08 am local time. 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.
Our monitoring service identified a second report from the citizen-seismograph network of RaspberryShake which listed the quake at magnitude 5.1. A third agency, the German Research Centre for Geosciences (GFZ), reported the same quake at magnitude 5.1.
Based on the preliminary seismic data, the quake should not have caused any significant damage, but was probably felt by many people as light vibration in the area of the epicenter.
Weak shaking might have been felt in Calama (pop. 143,100) located 23 km from the epicenter, and Maria Elena (pop. 4,900) 64 km away.
Other towns or cities near the epicenter where the quake might have been felt as very weak shaking include San Pedro de Atacama (pop. 2,000) located 111 km from the epicenter, and Tocopilla (pop. 24,500) 121 km away.
VolcanoDiscovery will automatically update magnitude and depth if these change and follow up if other significant news about the quake become available. If you're in the area, please send us your experience through our reporting mechanism, either online or via our mobile app. This will help us provide more first-hand updates to anyone around the globe who wants to know more about this quake.

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Earthquake details

Date & timeOct 4, 2022 13:08:57 UTC -
Local time at epicenterTuesday, Oct 4, 2022 at 10:08 am (GMT -3)
StatusConfirmed
Magnitude4.9
Depth117.6 km
Epicenter latitude / longitude22.1875°S / 68.7347°W (Provincia de El Loa, Antofagasta, Chile)
Antipode22.188°N / 111.265°E
Shaking intensityLight shaking
Felt1 report
Primary data sourceUSGS (United States Geological Survey)
Nearest volcanoSan Pedro (49 km / 30 mi)
Nearby towns and cities36 km (22 mi) NNE of Calama (pop: 143,100) | Show on map | Quakes nearby
97 km (60 mi) E of Maria Elena (pop: 4,900) | Show on map | Quakes nearby
97 km (61 mi) NW of San Pedro de Atacama (pop: 2,000) | Show on map | Quakes nearby
151 km (94 mi) E of Tocopilla (pop: 24,500) | Show on map | Quakes nearby
236 km (146 mi) NE of Antofagasta (pop: 309,800) | Show on map | Quakes nearby
256 km (159 mi) SE of Alto Hospicio (Tarapacá) (pop: 105,100) | Show on map | Quakes nearby
264 km (164 mi) SE of Iquique (Tarapacá) (pop: 227,500) | Show on map | Quakes nearby
504 km (313 mi) SW of Sucre (Chuquisaca, Bolivia) (pop: 224,800) | Show on map | Quakes nearby
Weather at epicenter at time of quakeClear Sky 11.4°C (52 F), humidity: 4%, wind: 3 m/s (5 kts) from WSW
Estimated seismic energy released1.4 x 1012 joules (392 megawatt hours, equivalent to 338 tons of TNT) | about seismic energy
Show interactive Map
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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
4.9118 km35 Km NNE of Calama, ChileUSGS
4.8105 kmNorthern ChileGFZ
4.9123 kmNorthern ChileRaspberryShake
4.9120 kmANTOFAGASTA, CHILEEMSC
4.910 kmNorthern ChileIRIS
5.091 kmNorthern ChileGeoAu

Seismograms

Seismic station: Las Campanas Astronomical Observatory, Chile (LCO/IU network) | Distance from quake: 784 km / 487 mi | Show on map | Station Info
Seismic station Las Campanas Astronomical Observatory, Chile: vertical movement plot around time of quake (source: IRIS/BUD)
Seismogram (vertical component) around time of quake. Thin dotted red line indicates time of quake. Seismic waves arrive some time later, depending on distance. Source: IRIS Buffer of Uniform Data (BUD) webtool
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User reports for this quake (1)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Translate
Calama, Provincia de El Loa, Antofagasta (33.7 km SSW of epicenter) [Map] / Light shaking (MMI IV) / 15-20 s : Harto ruido y remezón posterior (reported through our app)  

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