Strong mag. 5.0 earthquake - North Pacific Ocean, 96 km southeast of Salina Cruz, Oaxaca, Mexico, on Tuesday, 23 Feb 2021 3:30 am (GMT -6) -

Strong mag. 5.0 earthquake - North Pacific Ocean, 96 km southeast of Salina Cruz, Oaxaca, Mexico, on Tuesday, 23 Feb 2021 3:30 am (GMT -6)

Strong magnitude 5.0 earthquake at 16 km depth

23 Feb 09:35 UTC: First to report: INETER after 5 minutes.
23 Feb 09:42: Magnitude recalculated from 5.3 to 5.4. Hypocenter depth recalculated from 10.0 to 11.0 km (from 6.2 to 6.8 mi). Epicenter location corrected by 16 km (10.1 mi) towards SW.
23 Feb 09:49: Now using data updates from SSN
Update Tue, 23 Feb 2021, 09:51
Significant 5.0 quake hits near Salina Cruz, Oaxaca, Mexico
5.0 quake 23 Feb 3:30 am (GMT -6)
5.0 quake 23 Feb 3:30 am (GMT -6)
An earthquake of magnitude 5.0 occurred only 21 minutes ago 96 km southeast of Salina Cruz, Mexico, Mexico's National Seismological Service (SSN) reported.
The quake hit at a shallow depth of 16 km beneath the epicenter near Salina Cruz, Oaxaca, Mexico, early morning on Tuesday 23 February 2021 at 3:30 am local time. 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 4.9 earthquake. Other agencies reporting the same quake include the European-Mediterranean Seismological Centre (EMSC) at magnitude 4.9, and the German Research Centre for Geosciences (GFZ) at magnitude 4.8.
Generally quakes of this magnitude are recorded by more than one agency and the results can vary, with subsequent reports that come in after the first one often showing more accuracy.
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 Barrio Nuevo (pop. 33) located 93 km from the epicenter, San Mateo del Mar (pop. 5,700) 94 km away, Salina Cruz (pop. 76,600) 96 km away, Santo Domingo Tehuantepec (pop. 42,100) 113 km away, and Juchitan de Zaragoza (pop. 74,800) 119 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: 23 Feb 2021 09:30:18 UTC -
Local time at epicenter: Tuesday, 23 Feb 2021 3:30 am (GMT -6)
Magnitude: 5
Depth: 16.0 km
Epicenter latitude / longitude: 15.38°N / 94.84°W (North Pacific Ocean, Mexico)
Nearby towns and cities:
93 km (58 mi) S of Barrio Nuevo (pop: 33) --> See nearby quakes!
96 km (60 mi) SSE of Salina Cruz (pop: 76,600) --> See nearby quakes!
97 km (60 mi) SSW of San Francisco del Mar Viejo (pop: 4,030) --> See nearby quakes!
113 km (71 mi) SSE of Santo Domingo Tehuantepec (Tehuantepec) (pop: 42,100) --> See nearby quakes!
119 km (74 mi) S of Juchitan de Zaragoza (pop: 74,800) --> See nearby quakes!
134 km (83 mi) SSE of Ixtepec (pop: 25,400) --> See nearby quakes!
139 km (86 mi) SW of Arriaga (pop: 24,400) --> See nearby quakes!
140 km (87 mi) SW of Tonala (Tonalá) (pop: 35,300) --> See nearby quakes!
240 km (149 mi) SW of Tuxtla Gutiérrez (pop: 537,100) --> See nearby quakes!
640 km (398 mi) SE of Mexico City (pop: 12,294,200) --> See nearby quakes!
Weather at epicenter at time of quake:
Few Clouds 25.6°C (78 F), humidity: 74%, wind: 17 m/s (34 kts) from N
Primary data source: SSN (Servicio Sismológico Nacional)
Estimated released energy: 2 x 1012 joules (554 megawatt hours, equivalent to 477 tons of TNT) More info
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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!
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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.
M 5.016 km79 Km Al Sureste De Salina Cruz, México, MexicoSSN
M 5.034 kmNear Coast of Oaxaca, MexicoGFZ
M 4.948 km71 Km S of San Francisco Del Mar Viejo, MexicoUSGS

User reports for this quake (3)

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!
Cuernavaca, Mexico (608.6 km NW of epicenter) [Map] / not felt (reported through our app)
Helotes, TX (1561.2 km NNW of epicenter) [Map] / Very weak shaking (MMI II) / rattling, vibrating / very short : It was maybe 1 second long
Guatemala city / Moderate shaking (MMI V) / rattling, vibrating / 1-2 s : I was asleep and was awaken totaly
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More info
Recorded aftershocks, latest first (5 quakes):
  • 01 Mar 2021 09:25 UTC
    | M 3.7 |
    16 km (9.9 mi) depth
    10 km (6 mi) distance
    | SSN | Details
  • 28 Feb 2021 05:03 UTC
    | M 4.1 |
    23 km (14.3 mi) depth
    7 km (4 mi) distance
    | SSN | Details
  • 27 Feb 2021 08:52 UTC
    | M 3.7 |
    16 km (9.9 mi) depth
    7 km (4 mi) distance
    | SSN | Details
  • 26 Feb 2021 21:34 UTC
    | M 3.8 |
    16 km (9.9 mi) depth
    17 km (11 mi) distance
    | SSN | Details
  • 23 Feb 2021 14:02 UTC
    | M 4.1 |
    27 km (16.8 mi) depth
    4 km (2 mi) distance
    | SSN | Details

Earlier earthquakes in the same area since 1900

Map of earlier quakes

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