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Strong mag. 5.8 earthquake - South Pacific Ocean, 99 km west of Trujillo, La Libertad, Peru, on 28 Jul 7:32 pm (GMT -5) -

Strong mag. 5.8 earthquake - South Pacific Ocean, 99 km west of Trujillo, La Libertad, Peru, on 28 Jul 7:32 pm (GMT -5) Strong mag. 5.8 earthquake - South Pacific Ocean, 99 km west of Trujillo, La Libertad, Peru, on 28 Jul 7:32 pm (GMT -5)

Strong magnitude 5.8 earthquake at 28 km depth

29 Jul 00:39 UTC: First to report: GFZ after 7 minutes.
29 Jul 00:39: Epicenter location corrected by 4.7 km (2.9 mi) towards NE.
29 Jul 06:48: Magnitude recalculated from 5.5 to 5.8.
29 Jul 08:08: Hypocenter depth recalculated from 10.0 to 28.0 km (from 6.2 to 17.4 mi). Epicenter location corrected by 5.5 km (3.4 mi) towards NW.
Update Thu, 29 Jul 2021, 00:51

Significant magnitude 5.5 earthquake 96 km west of Trujillo, Peru

5.5 quake 28 Jul 7:32 pm (GMT -5)
5.5 quake 28 Jul 7:32 pm (GMT -5)
The German Research Centre for Geosciences (GFZ) reported a magnitude 5.5 quake in Peru near Trujillo, Provincia de Trujillo, La Libertad, only 19 minutes ago. The earthquake hit early evening on Wednesday 28 July 2021 at 7:32 pm local time at a shallow depth of 10 km. 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 United States Geological Survey, which listed it as a magnitude 5.7 earthquake. Other agencies reporting the same quake include France's Réseau National de Surveillance Sismique (RéNaSS) at magnitude 5.3, and the European-Mediterranean Seismological Centre (EMSC) at magnitude 5.7.
Based on the preliminary seismic data, the quake was probably felt by many people in the area of the epicenter. It should not have caused significant damage, other than objects falling from shelves, broken windows, etc.
In Nazareno (pop. 240) located 76 km from the epicenter, the quake should have been felt as light shaking.
Weak shaking might have been felt in Santiago de Cao (pop. 22,000) located 79 km from the epicenter, Paijan (pop. 21,100) 87 km away, Chocope (pop. 32,400) 90 km away, Chicama (pop. 14,900) 94 km away, Trujillo (pop. 747,500) 96 km away, Moche (pop. 22,600) 97 km away, Pacasmayo (pop. 29,200) 102 km away, and Chepén (pop. 42,000) 126 km away.
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 & timeJul 29, 2021 00:32:15 UTC -
Local time at epicenter28 Jul 7:32 pm (GMT -5)
Depth28.0 km
Epicenter latitude / longitude8.22°S / 79.92°W (South Pacific Ocean, Peru)
Antipode8.22°N / 100.08°E
Shaking intensityWeak shaking
Felt10 reports
Primary data sourceGFZ (German Research Centre for Geosciences)
Nearby towns and cities77 km (48 mi) WSW of Nazareno (Ascope) (pop: 242) | Show on map | Quakes nearby
80 km (50 mi) WSW of Santiago de Cao (Ascope) (pop: 22,000) | Show on map | Quakes nearby
87 km (54 mi) SW of Paijan (Ascope) (pop: 21,100) | Show on map | Quakes nearby
90 km (56 mi) WSW of Chocope (Ascope) (pop: 32,400) | Show on map | Quakes nearby
99 km (61 mi) W of Trujillo (pop: 747,500) | Show on map | Quakes nearby
99 km (61 mi) SSW of Pacasmayo (pop: 29,200) | Show on map | Quakes nearby
99 km (62 mi) SSW of San Pedro de Lloc (Provincia de Pacasmayo) (pop: 16,300) | Show on map | Quakes nearby
161 km (100 mi) S of Chiclayo (pop: 577,400) | Show on map | Quakes nearby
196 km (122 mi) SW of Cajamarca (pop: 135,000) | Show on map | Quakes nearby
530 km (329 mi) NW of Lima (pop: 7,737,000) | Show on map | Quakes nearby
Weather at epicenter at time of quakeOvercast Clouds 18.6°C (66 F), humidity: 85%, wind: 9 m/s (18 kts) from SSE
Estimated seismic energy released3.2 x 1013 joules (8.78 gigawatt hours, equivalent to 7558 tons of TNT or 0.5 atomic bombs!) | 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.
5.828 kmNear Coast of Northern PeruGFZ
5.410 kmPeru: Near TrujilloRENASS
5.823 km84 Km WSW of Santiago De Cao, PeruUSGS
5.847 kmNear Coast of Northern PeruGeoAu


Seismic station: Nana, Peru (NNA/II network) | Distance from quake: 538 km / 334 mi | Show on map | Station Info
Seismic station Nana, Peru: 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
Show more

User reports for this quake (10)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Leave a comment if you find a particular report interesting or want to add to it.
Flag as inappropriate.
Mark as helpful or interesting.
Send your own user report!
Reque, Provincia de Chiclayo (154.9 km N of epicenter) [Map] / Very weak shaking (MMI II) / horizontal (sideways) swinging / 2-5 s : La sofa en el que me encontraba acostado se balanceo levemente. | 3 users found this interesting.  
Trujillo / Light shaking (MMI IV) / single lateral shake / very short : First time ever! | One user found this interesting.  
Cajamarca (193.8 km NE of epicenter) [Map] / Very weak shaking (MMI II) / very short (reported through our app)
Huanchaco / Very weak shaking (MMI II) / rattling, vibrating / 1-2 s : 3 tremblements  
santa rosa / Weak shaking (MMI III)
Patricia Muro Chiclayo / Weak shaking (MMI III) / 1-2 s : Sentí el movimiento como si tuviera un mareó  
Trujillo (97.7 km E of epicenter) [Map] / Light shaking (MMI IV) / 2-5 s (reported through our app)
Trujillo (96.9 km E of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 5-10 s
santa rosa / Weak shaking (MMI III)
Chiclayo (160.4 km N of epicenter) [Map] / Light shaking (MMI IV) / single lateral shake / 2-5 s


[More info]

Recorded aftershocks, latest first (3 quakes)

Date and timeMag
Aug 22, 2021 15:34
1 year 6 weeks ago

40 km
South Pacific Ocean, 92 km SW of Santiago de Cao, Ascope, La Libertad, PeruMore
Jul 29, 2021 00:54
1 year 10 weeks ago - felt

46 km
South Pacific Ocean, 100 km SW of Chocope, Ascope, La Libertad, PeruMore
Jul 29, 2021 00:46
1 year 10 weeks ago

39 km
South Pacific Ocean, 98 km SW of Chocope, Ascope, La Libertad, PeruMore

Earlier earthquakes in the same area

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