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Minor mag. 2.5 earthquake - 81 km west of Chilecito, La Rioja, Argentina, on Thursday, Dec 1, 2022 at 12:28 am (GMT -3) -

Minor magnitude 2.5 earthquake at 105 km depth

1 Dec 09:34 UTC: First to report: INPRES after 6 hours.

Earthquake details

Date & time	Dec 1, 2022 03:28:00 UTC -
Local time at epicenter	Thursday, Dec 1, 2022 at 12:28 am (GMT -3)
Status	Confirmed
Magnitude	2.5
Depth	105.0 km
Epicenter latitude / longitude	29.038°S / 68.314°W (General Lamadrid, La Rioja, Argentina)
Antipode	29.038°N / 111.686°E
Shaking intensity	Not felt
Felt
Primary data source	INPRES
Nearest volcano	Tipas (206 km / 128 mi)
Nearby towns and cities	33 km (20 mi) SSW of Vinchina (pop: 2,830) \| Show on map \| Quakes nearby 81 km (50 mi) W of Chilecito (pop: 42,200) \| Show on map \| Quakes nearby 148 km (92 mi) WNW of Rioja (pop: 162,600) \| Show on map \| Quakes nearby
Weather at epicenter at time of quake
Estimated seismic energy released	3.5 x 10⁸ joules (98.6 kilowatt hours) \| 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
2.5	105 km	LA RIOJA (Argentina)	INPRES

Most recent quakes Top 20 past 24 hrs Quakes in Argentina

Seismograms

Seismic station: El Transito (AC05/C1 network) | Distance from quake: 192 km / 119 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

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

Seismic station: Juntas del Toro (CO01/C1 network) | Distance from quake: 201 km / 125 mi | Show on map | Station Info

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

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

Seismic station Juntas del Toro: 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: Las Campanas Astronomical Observatory, Chile (LCO/IU network) | Distance from quake: 232 km / 144 mi | Show on map | Station Info

Seismic station Las Campanas Astronomical Observatory, Chile: vertical movement plot around time of quake (source: IRIS/BUD)

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

Seismic station Las Campanas Astronomical Observatory, 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: Tololo Observatory, Vicuna, Chile (GO04/C network) | Distance from quake: 271 km / 169 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: 353 km / 219 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

User reports for this quake

At magnitude 2.5, this quake might have been felt very close to the epicenter and under calm conditions.

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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