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Light mag. 4.0 earthquake - 95 km east of Vallenar, Huasco, Atacama, Chile, on Thursday, Sep 29, 2022 at 12:09 pm (GMT -3) -

Light mag. 4.0 earthquake - 95 km east of Vallenar, Huasco, Atacama, Chile, on Thursday, Sep 29, 2022 at 12:09 pm (GMT -3) Light mag. 4.0 earthquake - 95 km east of Vallenar, Huasco, Atacama, Chile, on Thursday, Sep 29, 2022 at 12:09 pm (GMT -3)

Light magnitude 4.0 earthquake at 145 km depth

29 Sep 15:14 UTC: First to report: EMSC after 4 minutes.
29 Sep 15:24: Magnitude recalculated from 3.8 to 3.9. Hypocenter depth recalculated from 134.0 to 126.0 km (from 83 to 78 mi). Epicenter location corrected by 9.7 km (6.1 mi) towards W.
29 Sep 16:58: Magnitude recalculated from 3.9 to 4.0. Hypocenter depth recalculated from 126.0 to 145.0 km (from 78 to 90 mi). Epicenter location corrected by 4.9 km (3 mi) towards SSW.
29 Sep 17:00: Now using data updates from USGS

Earthquake details

Date & timeSep 29, 2022 15:09:49 UTC -
Local time at epicenterThursday, Sep 29, 2022 at 12:09 pm (GMT -3)
StatusConfirmed
Magnitude4
Depth145.3 km
Epicenter latitude / longitude28.9031°S / 69.859°W (Huasco Province, Atacama, Chile)
Antipode28.903°N / 110.141°E
Shaking intensityVery weak shaking
Felt0 reports
Primary data sourceUSGS (United States Geological Survey)
Nearest volcanoEl Solo (229 km / 142 mi)
Nearby towns and cities95 km (59 mi) ESE of Vallenar (pop: 44,900) | Show on map | Quakes nearby
175 km (109 mi) NE of La Serena (Coquimbo) (pop: 154,500) | Show on map | Quakes nearby
177 km (110 mi) SSE of Copiapo (pop: 129,300) | Show on map | Quakes nearby
184 km (114 mi) NW of San José de Jachal (San Juan, Argentina) (pop: 21,000) | Show on map | Quakes nearby
185 km (115 mi) NE of Coquimbo (pop: 161,300) | Show on map | Quakes nearby
229 km (142 mi) NE of Ovalle (Coquimbo) (pop: 77,100) | Show on map | Quakes nearby
512 km (318 mi) N of Santiago de Chile (Metropolitana) (pop: 4,837,300) | Show on map | Quakes nearby
Estimated seismic energy released6.3 x 1010 joules (17.5 megawatt hours, equivalent to 15.1 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
4.0145 km95 Km ESE of Vallenar, ChileUSGS
4.0145 kmChile-Argentina Border RegionRaspberryShake
4.010 kmChile-Argentina Border RegionIRIS
4.0145 kmATACAMA, CHILEEMSC

Seismograms

Seismic station: Las Campanas Astronomical Observatory, Chile (LCO/IU network) | Distance from quake: 83 km / 51 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

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
There are no user reports for this quake.

Earlier earthquakes in the same area

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