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Minor mag. 3.6 earthquake - La Rioja, 32 km south of Tinogasta, Catamarca, Argentina, on Tuesday, Jan 31, 2023 at 1:59 am (GMT -3) -

Minor magnitude 3.6 earthquake at 131 km depth

31 Jan 05:07 UTC: First to report: EMSC after 8 minutes.

Earthquake details

Date & time	Jan 31, 2023 04:59:30 UTC -
Local time at epicenter	Tuesday, Jan 31, 2023 at 1:59 am (GMT -3)
Status	Confirmed
Magnitude	3.6
Depth	131.0 km
Epicenter latitude / longitude	28.35°S / 67.59°W (Departamento de Famatina, La Rioja, Argentina)
Antipode	28.35°N / 112.41°E
Shaking intensity	Not felt
Felt
Primary data source	EMSC (European-Mediterranean Seismological Centre)
Nearest volcano	Tipas (159 km / 99 mi)
Nearby towns and cities	32 km (20 mi) S of Tinogasta (Catamarca) (pop: 14,500) \| Show on map \| Quakes nearby 75 km (47 mi) S of Fiambala (Catamarca) (pop: 8,060) \| Show on map \| Quakes nearby 76 km (47 mi) NE of Vinchina (pop: 2,830) \| Show on map \| Quakes nearby 82 km (51 mi) WNW of Arauco (pop: 13,700) \| Show on map \| Quakes nearby 84 km (52 mi) SSW of Londres (Catamarca) (pop: 2,630) \| Show on map \| Quakes nearby 91 km (56 mi) N of Chilecito (pop: 42,200) \| Show on map \| Quakes nearby 138 km (86 mi) NNW of Rioja (pop: 162,600) \| Show on map \| Quakes nearby 177 km (110 mi) W of San Fernando del Valle de Catamarca (pop: 188,800) \| Show on map \| Quakes nearby
Weather at epicenter at time of quake	Broken Clouds 23.9°C (75 F), humidity: 64%, wind: 2 m/s (4 kts) from SE
Estimated seismic energy released	1.6 x 10¹⁰ joules (4.4 megawatt hours, equivalent to 3.79 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
3.6	131 km	LA RIOJA, ARGENTINA	EMSC
4.4	171 km	La Rioja Province, Argentina	RaspberryShake

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Seismograms

Seismic station: El Transito (AC05/C1 network) | Distance from quake: 268 km / 166 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

Tinogasta provincia Catamarca (32.9 km N of epicenter) [Map] / Moderate shaking (MMI V) : Movimiento doble sacudon

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