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Light mag. 4.5 earthquake - 35 km southeast of Copiapo, Atacama, Chile, on Thursday, Dec 29, 2022 at 10:49 pm (GMT -3) -

Light mag. 4.5 earthquake - 35 km southeast of Copiapo, Atacama, Chile, on Thursday, Dec 29, 2022 at 10:49 pm (GMT -3) Light mag. 4.5 earthquake - 35 km southeast of Copiapo, Atacama, Chile, on Thursday, Dec 29, 2022 at 10:49 pm (GMT -3)

Light magnitude 4.5 earthquake at 93 km depth

30 Dec 01:52 UTC: First to report: VolcanoDiscovery after 3 minutes.
30 Dec 01:55: Now using data updates from EMSC
30 Dec 01:56: Magnitude recalculated from 4.4 to 4.8. Hypocenter depth recalculated from 83.0 to 100.0 km (from 52 to 62 mi). Epicenter location corrected by 4.6 km (2.8 mi) towards NNW.
30 Dec 02:08: Now using data updates from USGS

Earthquake details

Date & timeDec 30, 2022 01:49:18 UTC -
Local time at epicenterThursday, Dec 29, 2022 at 10:49 pm (GMT -3)
StatusConfirmed
Magnitude4.5
Depth92.5 km
Epicenter latitude / longitude27.6283°S / 70.136°W (Provincia de Copiapo, Atacama, Chile)
Antipode27.628°N / 109.864°E
Shaking intensityWeak shaking
Felt1 report
Primary data sourceUSGS (United States Geological Survey)
Nearest volcanoEl Solo (151 km / 94 mi)
Nearby towns and cities35 km (22 mi) SE of Copiapo (pop: 129,300) | Show on map | Quakes nearby
122 km (76 mi) NNE of Vallenar (pop: 44,900) | Show on map | Quakes nearby
141 km (87 mi) S of Diego de Almagro (pop: 18,100) | Show on map | Quakes nearby
274 km (170 mi) N of Vicuña (Coquimbo) (pop: 13,500) | Show on map | Quakes nearby
275 km (171 mi) NNE of La Serena (Coquimbo) (pop: 154,500) | Show on map | Quakes nearby
284 km (176 mi) NNE of Coquimbo (pop: 161,300) | Show on map | Quakes nearby
309 km (192 mi) WNW of Chilecito (La Rioja, Argentina) (pop: 42,200) | Show on map | Quakes nearby
650 km (404 mi) N of Santiago de Chile (Metropolitana) (pop: 4,837,300) | Show on map | Quakes nearby
Weather at epicenter at time of quakeClear Sky 17.1°C (63 F), humidity: 51%, wind: 1 m/s (2 kts) from WNW
Estimated seismic energy released3.5 x 1011 joules (98.6 megawatt hours, equivalent to 84.8 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
4.593 kmAtacama, ChileUSGS
5.099 kmNear Coast of Northern ChileGFZ
4.593 kmNear Coast of Northern ChileRaspberryShake
4.593 kmATACAMA, CHILEEMSC
4.510 kmNear Coast Of Northern ChileIRIS

Seismograms

Seismic station: Copiapo (Tierra Amarilla), Chile (GO03/C network) | Distance from quake: 10 km / 6 mi | Show on map | Station Info
Seismic station Copiapo (Tierra Amarilla), 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. Bandpass filter applied: 0.2-10.0 Hz. 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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Copiapó (31.5 km NNW of epicenter) [Map] / Weak shaking (MMI III) : Like the window and the bed was moving a little bit but i was little weak | 3 users found this interesting.  

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