Light mag. 4.8 earthquake - Santa Maria Zoquitlan, 56 km southeast of Oaxaca, Mexico, on Thursday, Sep 16, 2021 5:45 pm (GMT -5) -

Light mag. 4.8 earthquake - Santa Maria Zoquitlan, 56 km southeast of Oaxaca, Mexico, on Thursday, Sep 16, 2021 5:45 pm (GMT -5)

Light magnitude 4.8 earthquake at 63 km depth

16 Sep 22:56 UTC: First to report: EMSC after 11 minutes.
16 Sep 22:59: Magnitude recalculated from 5.3 to 5.0. Hypocenter depth recalculated from 80.0 to 89.0 km (from 50 to 55 mi). Epicenter location corrected by 7.8 km (4.8 mi) towards NW.
16 Sep 23:07: Now using data updates from SSN
Update Thu, 16 Sep 2021, 23:03
Significant magnitude 5.0 quake hits 84 km east of Santa Maria, Mexico in the afternoon
5.0 quake 16 Sep 5:45 pm (GMT -5)
5.0 quake 16 Sep 5:45 pm (GMT -5)
The European-Mediterranean Seismological Centre (EMSC) reported a magnitude 5.0 quake in Mexico near Santa Maria, Oaxaca de Juárez, Oaxaca, only 18 minutes ago. The earthquake hit in the afternoon on Thursday, September 16th, 2021, at 5:45 pm local time at an intermediate depth of 89 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.
Our monitoring service identified a second report from the German Research Centre for Geosciences (GFZ) which listed the quake at magnitude 4.8.
Based on the preliminary seismic data, the quake should not have caused any significant damage, but was probably felt by many people as light vibration in the area of the epicenter.
Weak shaking might have been felt in Potrero (pop. 320) located 1 km from the epicenter, Zacatepec (pop. 2,200) 7 km away, Santa Maria (pop. 3,500) 14 km away, San Antonio de la Cal (pop. 20,200) 82 km away, Santa Maria (pop. 255,000) 84 km away, and Santa Cruz Xoxocotlan (pop. 67,100) 86 km away.
Other towns or cities near the epicenter where the quake might have been felt as very weak shaking include Ocotlan de Morelos (pop. 15,000) located 86 km from the epicenter, Santa Maria Atzompa (pop. 21,800) 90 km away, and Matias Romero (pop. 18,900) 98 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 data

Date & time: Sep 16, 2021 22:45:25 UTC -
Local time at epicenter: Thursday, Sep 16, 2021 5:45 pm (GMT -5)
Magnitude: 4.8
Depth: 63.0 km
Epicenter latitude / longitude: 16.65°N / 96.42°W (Santa Maria Zoquitlan, Oaxaca, Mexico)
Antipode: 16.65°S / 83.58°E
Nearest volcano: San Martín (182 km / 113 mi)
Nearby towns and cities:
10 km (6 mi) SE of Yaxe (pop: 2,680) --> See nearby quakes!
17 km (11 mi) S of San Dionisio Ocotepec (pop: 5,460) --> See nearby quakes!
31 km (19 mi) ESE of Ocotlan de Morelos (pop: 15,000) --> See nearby quakes!
34 km (21 mi) S of Tlacolula de Matamoros (pop: 13,800) --> See nearby quakes!
40 km (25 mi) NNE of Miahuatlan de Porfirio Diaz (Miahuatlán de Porfirio Díaz) (pop: 23,900) --> See nearby quakes!
52 km (32 mi) SE of San Antonio de la Cal (pop: 20,200) --> See nearby quakes!
54 km (34 mi) SE of Santa Cruz Xoxocotlan (pop: 67,100) --> See nearby quakes!
56 km (35 mi) SE of Oaxaca (pop: 255,000) --> See nearby quakes!
63 km (39 mi) SE of Santa Maria Azompa (pop: 21,800) --> See nearby quakes!
421 km (262 mi) SE of Mexico (Ciudad de México) (pop: 12,294,200) --> See nearby quakes!
Weather at epicenter at time of quake:
Broken Clouds 20.9°C (70 F), humidity: 68%, wind: 2 m/s (5 kts) from ESE
Primary data source: SSN (Servicio Sismológico Nacional)
Estimated released energy: 1 x 1012 joules (278 megawatt hours, equivalent to 239 tons of TNT) | 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.
Mag.DepthLocationSource
4.863 kmMexico: 32 Km Al SURESTE De OCOTLAN DE MORELOS, OAXSSN
5.386 kmMexico: 86 Km Al Norte De Oaxaca, MéxicoINETER
4.810 kmOaxaca, MexicoGFZ
4.744 kmOAXACA, MEXICOEMSC
4.752 kmOaxaca, MexicoUSGS
5.069 kmOaxaca, MexicoGeoAu

User reports for this quake (8)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Calle Hidalgo, Oaxaca / Light shaking (MMI IV) / complex motion difficult to describe / 5-10 s : I felt a weakened tumble at first and then it grew in strength and intensity. It ended as it started… slowing down and losing intensity. | One user found this interesting.  
la crucecita mexico (102.8 km SSE of epicenter) [Map] / Very weak shaking (MMI II) / horizontal (sideways) swinging / 5-10 s
Teotitlan del Valle, Oaxaca / Strong shaking (MMI VI) / single lateral shake / 1-2 s : light shaking  
Oaxaca, Oaxaca / Very weak shaking (MMI II) / 2-5 s : piddling for Oaxaca  
oaxaca city / Light shaking (MMI IV) / rattling, vibrating / 15-20 s : Lots of rattling and shaking.  
Miahuatlán, Oaxaca / Weak shaking (MMI III) / single vertical bump / 1-2 s
Oaxaca city / Weak shaking (MMI III) / horizontal (sideways) swinging / 15-20 s
Miahuatlán de Porfirio Díaz / Weak shaking (MMI III) / 10-15 s : There were two vertical bumps. (reported through our app)  
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