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Strong mag. 6.4 earthquake - 39 km southwest of Campo Gallo, Departamento de Alberdi, Santiago del Estero, Argentina, on Tuesday, Jan 24, 2023 at 3:37 pm (GMT -3) -

Strong mag. 6.4 earthquake - 39 km southwest of Campo Gallo, Departamento de Alberdi, Santiago del Estero, Argentina, on Tuesday, Jan 24, 2023 at 3:37 pm (GMT -3) Strong mag. 6.4 earthquake - 39 km southwest of Campo Gallo, Departamento de Alberdi, Santiago del Estero, Argentina, on Tuesday, Jan 24, 2023 at 3:37 pm (GMT -3)

Strong magnitude 6.4 earthquake at 596 km depth

24 Jan 18:40 UTC: First to report: GFZ after 3 minutes.
24 Jan 18:43: Magnitude recalculated from 6.3 to 6.1. Hypocenter depth recalculated from 604.0 to 590.0 km (from 375 to 367 mi). Epicenter location corrected by 1.5 km (0.9 mi) towards NE.
... [show all] ...
27 Jan 17:10: Hypocenter depth recalculated from 601.0 to 596.1 km (from 373 to 370 mi). Epicenter location corrected by 6.9 km (4.3 mi) towards SE.

Earthquake details

Date & timeJan 24, 2023 18:37:00 UTC -
Local time at epicenterTuesday, Jan 24, 2023 at 3:37 pm (GMT -3)
Depth596.1 km
Epicenter latitude / longitude26.7346°S / 63.118°W (Departamento de Alberdi, Santiago del Estero, Argentina)
Antipode26.735°N / 116.882°E
Shaking intensityNot felt
Felt2 reports
Primary data sourceUSGS (United States Geological Survey)
Nearby towns and cities32 km (20 mi) WSW of Campo Gallo (Alberdi) (pop: 5,460) | Show on map | Quakes nearby
35 km (22 mi) NNE of El Hoyo (pop: 2,160) | Show on map | Quakes nearby
52 km (32 mi) NW of Tintina (pop: 3,870) | Show on map | Quakes nearby
163 km (102 mi) NE of Santiago del Estero (pop: 354,700) | Show on map | Quakes nearby
192 km (119 mi) ENE of Termas de Rio Hondo (Río Hondo) (pop: 27,800) | Show on map | Quakes nearby
209 km (130 mi) E of San Miguel de Tucuman (Tucumán) (pop: 781,000) | Show on map | Quakes nearby
986 km (613 mi) NNW of Buenos Aires (Buenos Aires C.F.) (pop: 13,076,300) | Show on map | Quakes nearby
Weather at epicenter at time of quakeScattered Clouds 41.5°C (107 F), humidity: 21%, wind: 5 m/s (10 kts) from NNE
Estimated seismic energy released2.5 x 1014 joules (69.8 gigawatt hours, equivalent to 60036 tons of TNT or 3.8 atomic bombs!) | 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.
6.4596 km31 Km WSW of Campo Gallo, ArgentinaUSGS
6.4601 kmSantiago Del Estero Prov., ArgentinaRaspberryShake
5.8535 kmArgentina: Near TucumánRENASS
6.2596 kmSantiago Del Estero Province, Argentina [Land: Argentina]INGV
6.3586 km33 Km WSW of Campo Gallo, ArgentinaGFZ
6.4577 kmSantiago Del Estero Prov., ArgentinaGeoAu
6.410 kmArgentina: Santiago Del Estero Prov., Arg.IRIS
6.2601 kmSantiago Del Estero Prov., ArgentinaOBSIS


Seismic station: Las Campanas Astronomical Observatory, Chile (LCO/IU network) | Distance from quake: 787 km / 489 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. Bandpass filter applied: 0.02-5.0 Hz. Source: IRIS Buffer of Uniform Data (BUD) webtool
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User reports for this quake (7)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Leave a comment if you find a particular report interesting or want to add to it.
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Send your own user report!
Siudad del Este, Alto Paraná (855.4 km E of epicenter) [Map] / Very weak shaking (MMI II) / horizontal (sideways) swinging / 2-5 s : Studying for a final dermatology exam tomorrow, i was sitting on my chair when i felt a sudden motion described as swinging sideways very weakly for about 3-4 seconds. I rose from my chair to check if a large vehicle was passing on the street and there was none. I sit back on my chair expecting a new tremor and i felt a weaker 1.5-2 seconds tremor in the same pattern as the first one. Just those 2 tremors. | 26 users found this interesting.  
  • Good kick with the exam,
Marialva PR - Brazil / not felt : Não senti o tremor. | 3 users found this interesting. (reported through our app)  
Santiago del Estero, Departamento de Capital (160.6 km SW of epicenter) [Map] / Weak shaking (MMI III) / 15-20 s : Mareos. Movimiento leve de muebles | 2 users found this interesting.  
near Clodomira, Banda, Santiago del Estero (145.9 km SW of epicenter) [Map] / not felt
Microregion of Votuporanga (1511.6 km ENE of epicenter) [Map] / not felt (reported through our app)
Santo Ângelo, Río Grande del Sur (889.3 km ESE of epicenter) [Map] / not felt (reported through our app)
I was at my house the address is 982387207489 / not felt : I dont know  


[More info]

Recorded aftershocks, latest first (0 quake)

So far, no aftershocks have been registered.

Earlier earthquakes in the same area

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