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Light mag. 3.7 earthquake - 70 km west of Chilecito, La Rioja, Argentina, on Wednesday, Jan 25, 2023 at 9:15 pm (GMT -3) -

Updated: Jan 27, 2023 03:23 GMT - refresh

I felt this quake

Light mag. 3.7 earthquake - 70 km west of Chilecito, La Rioja, Argentina, on Wednesday, Jan 25, 2023 at 9:15 pm (GMT -3)

Light magnitude 3.7 earthquake at 10 km depth

26 Jan 00:22 UTC: First to report: EMSC after 7 minutes.

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Earthquake details

Date & time	Jan 26, 2023 00:15:30 UTC -
Local time at epicenter	Wednesday, Jan 25, 2023 at 9:15 pm (GMT -3)
Status	Confirmed
Magnitude	3.7
Depth	10.0 km
Epicenter latitude / longitude	29.04°S / 68.2°W (General Lamadrid, La Rioja, Argentina)
Antipode	29.04°N / 111.8°E
Shaking intensity	Weak shaking
Felt	1 report
Primary data source	EMSC (European-Mediterranean Seismological Centre)
Nearest volcano	Tipas (208 km / 129 mi)
Nearby towns and cities	31 km (19 mi) S of Vinchina (pop: 2,830) \| Show on map \| Quakes nearby 70 km (43 mi) W of Chilecito (pop: 42,200) \| Show on map \| Quakes nearby 118 km (73 mi) WNW of Villa Bustos (pop: 2,170) \| Show on map \| Quakes nearby 125 km (78 mi) SSW of Tinogasta (Catamarca) (pop: 14,500) \| Show on map \| Quakes nearby 137 km (85 mi) WNW of Rioja (pop: 162,600) \| Show on map \| Quakes nearby 144 km (89 mi) NNE of San José de Jachal (San Juan) (pop: 21,000) \| Show on map \| Quakes nearby 146 km (91 mi) WSW of Arauco (pop: 13,700) \| Show on map \| Quakes nearby 162 km (101 mi) SSW of Fiambala (Catamarca) (pop: 8,060) \| Show on map \| Quakes nearby
Weather at epicenter at time of quake	Clear Sky 28.4°C (83 F), humidity: 35%, wind: 6 m/s (11 kts) from S
Estimated seismic energy released	2.2 x 10¹⁰ joules (6.22 megawatt hours, equivalent to 5.35 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
3.7	10 km	LA RIOJA, ARGENTINA	EMSC
3.7	10 km	San Juan Province, Argentina	RaspberryShake

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Seismograms

Seismic station: El Transito (AC05/C1 network) | Distance from quake: 203 km / 126 mi | Show on map | Station Info

Seismic station El Transito: 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

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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Translate

Villa Unión / Weak shaking (MMI III) / rattling, vibrating / 1-2 s : Sentimos el temblor mientras estábamos sentados en una mesita afuera de una heladería

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