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Light mag. 3.7 earthquake - Arequipa, Peru, on Saturday, Oct 9, 2021 at 9:15 pm (GMT -5) -

This quake was likely an aftershock of the 5.5 quake 94 km northwest of Arequipa, Peru, Oct 8, 2021 11:47 pm (GMT -5), which had occurred 21 hours earlier.
Light mag. 3.7 earthquake - Arequipa, Peru, on Saturday, Oct 9, 2021 at 9:15 pm (GMT -5) Light mag. 3.7 earthquake - Arequipa, Peru, on Saturday, Oct 9, 2021 at 9:15 pm (GMT -5)

Light magnitude 3.7 earthquake at 12 km depth

10 Oct 02:21 UTC: First to report: EMSC after 6 minutes.

Earthquake details

Date & timeOct 10, 2021 02:15:34 UTC -
Local time at epicenterSaturday, Oct 9, 2021 at 9:15 pm (GMT -5)
StatusConfirmed
Magnitude3.7
Depth12.0 km
Epicenter latitude / longitude15.62°S / 71.82°W (Provincia de Caylloma, Arequipa, Peru)
Antipode15.62°N / 108.18°E
Shaking intensityVery weak shaking
Felt1 report
Primary data sourceEMSC (European-Mediterranean Seismological Centre)
Nearest volcanoSabancaya (18 km / 11 mi)
Nearby towns and cities2 km (1 mi) SW of Madrigal (pop: 690) | Show on map | Quakes nearby
24 km (15 mi) W of Chivay (pop: 4,540) | Show on map | Quakes nearby
37 km (23 mi) WSW of Ccolo (pop: 3,860) | Show on map | Quakes nearby
42 km (26 mi) WNW of Huarancante (pop: 4,640) | Show on map | Quakes nearby
82 km (51 mi) NNW of Cono Norte (pop: 47,300) | Show on map | Quakes nearby
89 km (55 mi) NNW of Selva Alegre (pop: 72,700) | Show on map | Quakes nearby
92 km (57 mi) NNW of Arequipa (pop: 841,100) | Show on map | Quakes nearby
95 km (59 mi) NNW of Ciudad Satelite (pop: 76,400) | Show on map | Quakes nearby
96 km (59 mi) NNW of Jacobo Hunter (pop: 46,100) | Show on map | Quakes nearby
689 km (428 mi) SE of Lima (Lima Province) (pop: 7,737,000) | Show on map | Quakes nearby
Weather at epicenter at time of quakeOvercast Clouds 13°C (55 F), humidity: 78%, wind: 1 m/s (2 kts) from SW
Estimated seismic energy released2.2 x 1010 joules (6.22 megawatt hours, equivalent to 5.35 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.
Mag.DepthLocationSource
3.712 kmSOUTHERN PERUEMSC

Seismograms

Seismic station: Chacalluta (AP01/C1 network) | Distance from quake: 344 km / 214 mi | Show on map | Station Info
Seismic station Chacalluta: 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. Source: IRIS Buffer of Uniform Data (BUD) webtool
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User reports for this quake (1)

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

Earlier earthquakes in the same area

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