Moderate mag. 4.2 earthquake - North Pacific Ocean, 93 km south of Salina Cruz, Oaxaca, Mexico, on Tuesday, Aug 3, 2021 12:23 pm (GMT -6) -

Moderate mag. 4.2 earthquake - North Pacific Ocean, 93 km south of Salina Cruz, Oaxaca, Mexico, on Tuesday, Aug 3, 2021 12:23 pm (GMT -6)

Moderate magnitude 4.2 earthquake at 20 km depth

3 Aug 18:41 UTC: First to report: EMSC after 18 minutes.
3 Aug 18:42: Now using data updates from SSN
Update Tue, 3 Aug 2021, 18:48
Moderate magnitude 4.2 earthquake 93 km southeast of Salina Cruz, Mexico
4.2 quake 3 Aug 12:23 pm (GMT -6)
4.2 quake 3 Aug 12:23 pm (GMT -6)
Just 24 minutes ago, a 4.2-magnitude earthquake struck near Salina Cruz, Oaxaca, Mexico. The tremor was recorded around noon on Tuesday 3 August 2021 at 12:23 pm local time, at a shallow depth of 20 km below the surface.
The event was filed by Mexico's National Seismological Service (SSN), the first seismological agency to report it.
Our monitoring service identified a second report from the European-Mediterranean Seismological Centre (EMSC) which listed the quake at magnitude 4.2 as well.
Towns or cities near the epicenter where the quake might have been felt as very weak shaking include Concepcion Bamba (pop. 310) located 85 km from the epicenter, Salina Cruz (pop. 76,600) 93 km away, Colonia Juarez (pop. 2,800) 95 km away, and San Mateo del Mar (pop. 5,700) 95 km away.
Download the Volcanoes & Earthquakes app and get one of the fastest seismic alerts online:
Android | iOS

Earthquake data

Date & time: Aug 3, 2021 18:23:57 UTC -
Local time at epicenter: Tuesday, Aug 3, 2021 12:23 pm (GMT -6)
Magnitude: 4.2
Depth: 20.0 km
Epicenter latitude / longitude: 15.36°N / 94.99°W (North Pacific Ocean, Mexico)
Antipode: 15.36°S / 85.01°E
Nearby towns and cities:
85 km (53 mi) SSE of Concepcion Bamba (pop: 312) --> See nearby quakes!
93 km (58 mi) SSE of Salina Cruz (pop: 76,600) --> See nearby quakes!
95 km (59 mi) S of San Mateo del Mar (pop: 5,730) --> See nearby quakes!
111 km (69 mi) SSE of Santo Domingo Tehuantepec (Tehuantepec) (pop: 42,100) --> See nearby quakes!
120 km (74 mi) S of Juchitan de Zaragoza (pop: 74,800) --> See nearby quakes!
131 km (81 mi) ESE of Crucecita (pop: 15,100) --> See nearby quakes!
134 km (83 mi) S of Ixtepec (pop: 25,400) --> See nearby quakes!
152 km (94 mi) SW of Arriaga (pop: 24,400) --> See nearby quakes!
155 km (96 mi) WSW of Tonala (Tonalá) (pop: 35,300) --> See nearby quakes!
631 km (392 mi) SE of Mexico City (pop: 12,294,200) --> See nearby quakes!
Weather at epicenter at time of quake:
Overcast Clouds 29°C (84 F), humidity: 73%, wind: 4 m/s (8 kts) from ENE
Primary data source: SSN (Servicio Sismológico Nacional)
Estimated released energy: 1.3 x 1011 joules (35 megawatt hours, equivalent to 30.1 tons of TNT) More info
Show interactive Map
[smaller] [bigger]
If you felt this quake (or if you were near the epicenter), please share your experience and submit a short "I felt it" report! Other users would love to hear about it!
If you did NOT feel the quake although you were in the area, please report it! Your contribution is valuable to earthquake science, seismic hazard analysis and mitigation efforts. You can use your device location or the map to indicate where you were during the earthquake. Thank you!

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.
4.220 kmMexico: 94 Km Al SUR De SALINA CRUZ, OAXSSN

User reports for this quake

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
There are no user reports for this quake yet. If you felt it be the first to report it!
Volcanoes & Earthquakes - new app for Android

Earlier earthquakes in the same area

Try our free app!
Volcanoes & Earthquakes - new app for Android
Android | iOS version
Why is there advertising on this site?
Support us - Help us upgrade our services!
We truly love working to bring you the latest volcano and earthquake data from around the world. Maintaining our website and our free apps does require, however, considerable time and resources.
We need financing to increase hard- and software capacity as well as support our editor team. We're aiming to achieve uninterrupted service wherever an earthquake or volcano eruption unfolds, and your donations can make it happen! Every donation will be highly appreciated. If you find the information useful and would like to support our team in integrating further features, write great content, and in upgrading our soft- and hardware, please make a donation (PayPal or Online credit card payment).

Planned features:
  • Improved multilanguage support
  • Tsunami alerts
  • Faster responsiveness
Thanks to your past donations, these features have been added recently:
  • Earthquake archive from 1900 onwards
  • Detailed quake stats
  • Additional seismic data sources
Download and Upgrade the Volcanoes & Earthquakes app to get one of the fastest seismic and volcano alerts online:
Android | IOS
Thank you!
Copyrights: VolcanoDiscovery and other sources as noted.
Use of material: Most texts and images, in particular photographs, on this website are protected by copyright. Further reproduction and use of without authorization is usually not consented. If you are not sure or need licensing rights for photographs, for example for publications and commercial use, please contact us.