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Moderate mag. 4.3 earthquake - South Pacific Ocean, 150 km northwest of Copiapo, Atacama, Chile, on Tuesday, Jan 24, 2023 at 11:48 pm (GMT -5) -

Moderate magnitude 4.3 earthquake at 19 km depth

25 Jan 04:53 UTC: First to report: EMSC after 5 minutes.
25 Jan 05:05: Magnitude recalculated from 3.9 to 3.8. Hypocenter depth recalculated from 33.0 to 27.0 km (from 21 to 16.8 mi). Epicenter location corrected by 41 km (26 mi) towards ESE.
26 Jan 00:32: Now using data updates from USGS

Earthquake details

Date & time	Jan 25, 2023 04:48:06 UTC -
Local time at epicenter	Tuesday, Jan 24, 2023 at 11:48 pm (GMT -5)
Status	Confirmed
Magnitude	4.3
Depth	19.3 km
Epicenter latitude / longitude	26.3612°S / 71.3386°W (South Pacific Ocean, Chile)
Antipode	26.361°N / 108.661°E
Shaking intensity	Light shaking near epicenter
Felt	0 reports
Primary data source	USGS (United States Geological Survey)
Nearest volcano	###NEARESTVOLCANO2###
Nearby towns and cities	128 km (80 mi) W of Diego de Almagro (pop: 18,100) \| Show on map \| Quakes nearby 136 km (85 mi) SW of Taltal (Antofagasta) (pop: 10,000) \| Show on map \| Quakes nearby 150 km (93 mi) NW of Copiapo (pop: 129,300) \| Show on map \| Quakes nearby 253 km (157 mi) NNW of Vallenar (pop: 44,900) \| Show on map \| Quakes nearby 792 km (492 mi) N of Santiago de Chile (pop: 4,837,300) \| Show on map \| Quakes nearby
Weather at epicenter at time of quake
Estimated seismic energy released	1.8 x 10¹¹ joules (49.4 megawatt hours, equivalent to 42.5 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.	Depth	Location	Source
4.3	19 km	128 Km W of Diego De Almagro, Chile	USGS
4.3	19 km	Off Coast of Northern Chile	RaspberryShake
3.8	27 km	OFFSHORE ATACAMA, CHILE	EMSC

Most recent quakes Top 20 past 24 hrs Quakes in Chile

Seismograms

Seismic station: Pan de Azucar (AC01/C1 network) | Distance from quake: 78 km / 48 mi | Show on map | Station Info

Seismic station Pan de Azucar: 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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Seismic station Pan de Azucar: horizontal (E-W) movement plot around time of quake (source: IRIS/BUD)

Seismic station Pan de Azucar: horizontal (N-S) movement plot around time of quake (source: IRIS/BUD)

Seismograms around time of quake, showing horizontal E-W and N-S ground movements. Source: IRIS Buffer of Uniform Data (BUD) webtool

Seismic station: Copiapo, Mina Casimiro Domeyko (AC06/C1 network) | Distance from quake: 148 km / 92 mi | Show on map | Station Info

Seismic station Copiapo, Mina Casimiro Domeyko: vertical movement plot around time of quake (source: IRIS/BUD)

Seismic station Copiapo, Mina Casimiro Domeyko: horizontal (E-W) movement plot around time of quake (source: IRIS/BUD)

Seismic station Copiapo, Mina Casimiro Domeyko: horizontal (N-S) movement plot around time of quake (source: IRIS/BUD)

Seismograms around time of quake.
Top: vertical movement, bottom: horizontal (E-W and N-S) movements. Source: IRIS Buffer of Uniform Data (BUD) webtool

Seismic station: El Transito (AC05/C1 network) | Distance from quake: 295 km / 183 mi | Show on map | Station Info

Seismic station El Transito: vertical movement plot around time of quake (source: IRIS/BUD)

Seismic station El Transito: horizontal (E-W) movement plot around time of quake (source: IRIS/BUD)

Seismic station El Transito: horizontal (N-S) movement plot around time of quake (source: IRIS/BUD)

Seismograms around time of quake.
Top: vertical movement, bottom: horizontal (E-W and N-S) movements. Source: IRIS Buffer of Uniform Data (BUD) webtool

Seismic station: Combarbala (CO02/C1 network) | Distance from quake: 539 km / 335 mi | Show on map | Station Info

Seismic station Combarbala: 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: 0.2-5.0 Hz. Source: IRIS Buffer of Uniform Data (BUD) webtool

Seismic station Combarbala: horizontal (E-W) movement plot around time of quake (source: IRIS/BUD)

Seismic station Combarbala: horizontal (N-S) movement plot around time of quake (source: IRIS/BUD)

Seismograms around time of quake.
Top: vertical movement, bottom: horizontal (E-W and N-S) movements. Source: IRIS Buffer of Uniform Data (BUD) webtool

Seismic station: Panimavida (ML02/C1 network) | Distance from quake: 1045 km / 650 mi | Show on map | Station Info

Seismic station Panimavida: 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: 0.2-5.0 Hz. Source: IRIS Buffer of Uniform Data (BUD) webtool

Seismic station Panimavida: horizontal (E-W) movement plot around time of quake (source: IRIS/BUD)

Seismic station Panimavida: horizontal (N-S) movement plot around time of quake (source: IRIS/BUD)

Seismograms around time of quake.
Top: vertical movement, bottom: horizontal (E-W and N-S) movements. Source: IRIS Buffer of Uniform Data (BUD) webtool

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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