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Light mag. 4.4 earthquake - 158 km southwest of La Paz, Bolivia, on Tuesday, Sep 7, 2021 at 9:22 am (GMT -4)

Light mag. 4.4 earthquake - 158 km southwest of La Paz, Bolivia, on Tuesday, Sep 7, 2021 at 9:22 am (GMT -4) Light mag. 4.4 earthquake - 158 km southwest of La Paz, Bolivia, on Tuesday, Sep 7, 2021 at 9:22 am (GMT -4)

Light magnitude 4.4 earthquake at 165 km depth

7 Sep 13:27 UTC: First to report: GFZ after 5 minutes.
7 Sep 13:28: Magnitude recalculated from 4.6 to 4.4. Epicenter location corrected by 3.1 km (1.9 mi) towards NE.
Update Tue, 7 Sep 2021, 13:33

Magnitude 4.4 earthquake strikes near Chuquitira, Provincia de Tarata, Tacna, Peru

4.4 quake 158 km southwest of La Paz, Bolivia, Sep 7, 2021 9:22 am (GMT -4)
4.4 quake 158 km southwest of La Paz, Bolivia, Sep 7, 2021 9:22 am (GMT -4)
An earthquake of magnitude 4.4 occurred in the morning on Tuesday, September 7th, 2021, at 9:22 am local time near Chuquitira, Provincia de Tarata, Tacna, Peru, as reported by the German Research Centre for Geosciences (GFZ).
According to preliminary data, the quake was located at an intermediate to considerable depth of 165 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.
Our monitoring service identified a second report from the European-Mediterranean Seismological Centre (EMSC) which listed the quake at magnitude 4.4 as well.
According to preliminary calculations, we do not expect that the quake was felt by many people and did not cause any damage. In Chuquitira (pop. 4,200, 76 km away), and Desaguadero (pop. 5,300, 94 km away), the quake was probably not felt.
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.

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Earthquake details

Date & timeSep 7, 2021 13:22:14 UTC
Local time at epicenterTuesday, Sep 7, 2021 at 9:22 am (GMT -4)
Depth165.0 km
Epicenter latitude / longitude17.36°S / 69.33°W (Departamento de La Paz, Bolivia)
Antipode17.36°N / 110.67°E
Shaking intensityVery weak shaking
Felt1 report
Primary data sourceGFZ (German Research Centre for Geosciences)
Nearest volcanoNevados Casiri (53 km / 33 mi)
Nearby towns and cities76 km (47 mi) E of Tarata (Tacna, Peru) (pop: 3,050) | Show on map | Quakes nearby
76 km (47 mi) E of Chuquitira (Tacna, Peru) (pop: 4,220) | Show on map | Quakes nearby
94 km (58 mi) SSW of Desaguadero (Chucuito, Puno, Peru) (pop: 5,330) | Show on map | Quakes nearby
99 km (61 mi) E of Quilahuani (Tacna, Peru) (pop: 3,180) | Show on map | Quakes nearby
122 km (76 mi) NE of Tacna (Peru) (pop: 280,100) | Show on map | Quakes nearby
126 km (78 mi) S of Yunguyo (Puno, Peru) (pop: 16,100) | Show on map | Quakes nearby
135 km (84 mi) SSW of San Pedro (La Paz) (pop: 5,000) | Show on map | Quakes nearby
158 km (98 mi) SW of La Paz (pop: 812,800) | Show on map | Quakes nearby
161 km (100 mi) NE of Arica (Arica y Parinacota, Chile) (pop: 186,000) | Show on map | Quakes nearby
468 km (291 mi) WNW of Sucre (Chuquisaca) (pop: 224,800) | Show on map | Quakes nearby
Weather at epicenter at time of quakeClear Sky 4.7°C (40 F), humidity: 34%, wind: 2 m/s (3 kts) from WSW
Estimated seismic energy released2.5 x 1011 joules (69.8 megawatt hours, equivalent to 60 tons of TNT) | about seismic energy
Show interactive Map
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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.
4.4165 kmPeru-Bolivia Border RegionGFZ
4.5172 kmBolivia: 66 Km ENE of Estique, PeruUSGS
4.7171 kmPeru-Bolivia Border RegionUSP


Seismic station: Chusmiza, Chile (GO01/C network) | Distance from quake: 257 km / 160 mi | Show on map | Station Info
Seismic station Chusmiza, 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: 0.2-10.0 Hz. Source: IRIS Buffer of Uniform Data (BUD) webtool
Show more

User reports for this quake (1)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
santa rosa / Very weak shaking (MMI II)

Earlier earthquakes in the same area

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