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Weak mag. 3.1 earthquake - South Pacific Ocean, 82 km west of Vallenar, Huasco, Atacama, Chile, on Thursday, Jan 19, 2023 at 11:50 pm (GMT -3) -

Weak magnitude 3.1 earthquake at 49 km depth

20 Jan 03:01 UTC: First to report: EMSC after 10 minutes.

Earthquake details

Date & time	Jan 20, 2023 02:50:45 UTC -
Local time at epicenter	Thursday, Jan 19, 2023 at 11:50 pm (GMT -3)
Status	Confirmed
Magnitude	3.1
Depth	49.0 km
Epicenter latitude / longitude	28.82°S / 71.55°W (South Pacific Ocean, Chile)
Antipode	28.82°N / 108.45°E
Shaking intensity	Very weak shaking
Felt	0 reports
Primary data source	EMSC (European-Mediterranean Seismological Centre)
Nearest volcano	###NEARESTVOLCANO2###
Nearby towns and cities	82 km (51 mi) WSW of Vallenar (pop: 44,900) \| Show on map \| Quakes nearby 124 km (77 mi) NNW of La Serena (pop: 154,500) \| Show on map \| Quakes nearby 128 km (79 mi) N of Coquimbo (pop: 161,300) \| Show on map \| Quakes nearby 158 km (98 mi) NNW of Vicuña (pop: 13,500) \| Show on map \| Quakes nearby 523 km (325 mi) N of Santiago de Chile (pop: 4,837,300) \| Show on map \| Quakes nearby
Weather at epicenter at time of quake	Clear Sky 17.3°C (63 F), humidity: 84%, wind: 10 m/s (19 kts) from S
Estimated seismic energy released	2.8 x 10⁹ joules (783 kilowatt hours, equivalent to 0.674 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
3.1	49 km	OFFSHORE ATACAMA, CHILE	EMSC
3.1	49 km	Near Coast of Central Chile	RaspberryShake

Most recent quakes Top 20 past 24 hrs Quakes in Chile

Seismograms

Seismic station: Llanos de Challe (AC04/C1 network) | Distance from quake: 83 km / 51 mi | Show on map | Station Info

Seismic station Llanos de Challe: 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: 0.5-10.0 Hz. Source: IRIS Buffer of Uniform Data (BUD) webtool

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

Seismic station Llanos de Challe: 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: El Transito (AC05/C1 network) | Distance from quake: 124 km / 77 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: Tololo Observatory, Vicuna, Chile (GO04/C network) | Distance from quake: 167 km / 104 mi | Show on map | Station Info

Seismic station Tololo Observatory, Vicuna, Chile: vertical movement plot around time of quake (source: IRIS/BUD)

Seismic station Tololo Observatory, Vicuna, Chile: horizontal (E-W) movement plot around time of quake (source: IRIS/BUD)

Seismic station Tololo Observatory, Vicuna, Chile: 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: 270 km / 168 mi | Show on map | Station Info

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

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: Mina Guanaco, Chile (GO02/C network) | Distance from quake: 451 km / 280 mi | Show on map | Station Info

Seismic station Mina Guanaco, Chile: vertical movement plot around time of quake (source: IRIS/BUD)

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

Seismic station Mina Guanaco, Chile: 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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