Light mag. 4.3 earthquake - San Juan, Argentina, on Tuesday, Jan 25, 2022 at 10:16 pm (GMT -3) -
Light magnitude 4.3 earthquake at 122 km depth
26 Jan 01:22 UTC: First to report: INPRES after 6 minutes.
26 Jan 01:36: Magnitude recalculated from 4.1 to 4.0. Epicenter location corrected by 3.8 km (2.4 mi) towards NNW.
26 Jan 01:40: Now using data updates from USGS
26 Jan 01:36: Magnitude recalculated from 4.1 to 4.0. Epicenter location corrected by 3.8 km (2.4 mi) towards NNW.
26 Jan 01:40: Now using data updates from USGS
Update Wed, 26 Jan 2022, 01:42
Moderate magnitude 4.3 quake hits 90 km southwest of Ciudad de San Juan, Argentina late at night 4.3 quake 25 Jan 10:16 pm (GMT -3)
An earthquake of magnitude 4.3 occurred late at night on Tuesday, January 25th, 2022, at 10:16 pm local time near Ciudad de San Juan, Departamento de Capital, San Juan, Argentina, as reported by the United States Geological Survey.
According to preliminary data, the quake was located at an intermediate depth of 121.5 km. The strength of the earthquake may have been tempered by its relative great depth below the surface, which makes it feel weaker in absolute terms. The exact magnitude, epicenter, and depth of the quake might be revised within the next few hours or minutes as seismologists review data and refine their calculations, or as other agencies issue their report.
A second report was later issued by the European-Mediterranean Seismological Centre (EMSC), which listed it as a magnitude 4.3 earthquake as well.
Towns or cities near the epicenter where the quake might have been felt as very weak shaking include Ciudad de San Juan (pop. 447,000) located 90 km from the epicenter.
VolcanoDiscovery will automatically update magnitude and depth if these change and follow up if other significant news about the quake become available. If you're in the area, please send us your experience through our reporting mechanism, either online or via our mobile app. This will help us provide more first-hand updates to anyone around the globe who wants to know more about this quake.
According to preliminary data, the quake was located at an intermediate depth of 121.5 km. The strength of the earthquake may have been tempered by its relative great depth below the surface, which makes it feel weaker in absolute terms. The exact magnitude, epicenter, and depth of the quake might be revised within the next few hours or minutes as seismologists review data and refine their calculations, or as other agencies issue their report.
A second report was later issued by the European-Mediterranean Seismological Centre (EMSC), which listed it as a magnitude 4.3 earthquake as well.
Towns or cities near the epicenter where the quake might have been felt as very weak shaking include Ciudad de San Juan (pop. 447,000) located 90 km from the epicenter.
VolcanoDiscovery will automatically update magnitude and depth if these change and follow up if other significant news about the quake become available. If you're in the area, please send us your experience through our reporting mechanism, either online or via our mobile app. This will help us provide more first-hand updates to anyone around the globe who wants to know more about this quake.
Earthquake data
Local time at epicenter: Tuesday, Jan 25, 2022 at 10:16 pm (GMT -3)
Magnitude: 4.3
Depth: 121.5 km
Epicenter latitude / longitude: 31.9128°S / 69.3821°W
(Departamento de Calingasta, San Juan, Argentina)Antipode: 31.913°N / 110.618°E
Nearest volcano: Tupungatito (170 km / 106 mi)
Nearby towns and cities:
90 km (56 mi) WSW of Ciudad de San Juan (pop: 447,000) --> See nearby quakes!
Weather at epicenter at time of quake:
Scattered Clouds
22.4°C (72 F), humidity: 47%, wind: 3 m/s (6 kts) from ESE
Primary data source: USGS (United States Geological Survey)
Scattered Clouds
22.4°C (72 F), humidity: 47%, wind: 3 m/s (6 kts) from ESEEstimated released energy: 1.8 x 1011 joules (49.4 megawatt hours, equivalent to 42.5 tons of TNT) | about seismic energy
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 |
| 4.3 | 122 km | 64 Km S of Calingasta, Argentina | USGS |
| 4.3 | 122 km | San Juan Province, Argentina | RaspberryShake |
| 4.3 | 122 km | SAN JUAN, ARGENTINA | EMSC |
| 4.0 | 112 km | SAN JUAN (Argentina) | INPRES |
| 4.4 | 126 km | San Juan Province, Argentina | GFZ |
User reports for this quake
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Earlier earthquakes in the same area
Click here to search our database for earlier earthquakes in the same area since 1900!
