Moderate mag. 4.5 earthquake - North Pacific Ocean, 58 km southwest of Santiago Pinotepa Nacional, Mexico, on Monday, Oct 18, 2021 11:10 am (GMT -7) -

Moderate mag. 4.5 earthquake - North Pacific Ocean, 58 km southwest of Santiago Pinotepa Nacional, Mexico, on Monday, Oct 18, 2021 11:10 am (GMT -7)

Moderate magnitude 4.5 earthquake at 9 km depth

18 Oct 18:35 UTC: First to report: SSN after 25 minutes.
Update Mon, 18 Oct 2021, 18:39
Magnitude 4.5 earthquake strikes near Pinotepa Nacional, Santiago Pinotepa Nacional, Oaxaca, Mexico
4.5 quake 18 Oct 11:10 am (GMT -7)
4.5 quake 18 Oct 11:10 am (GMT -7)
Just 29 minutes ago, a 4.5-magnitude earthquake struck near Pinotepa Nacional, Santiago Pinotepa Nacional, Oaxaca, Mexico. The tremor was recorded in the morning on Monday, October 18th, 2021, at 11:10 am local time, at a very shallow depth of 9 km below the surface.
The event was filed by Mexico's National Seismological Service (SSN), the first seismological agency to report it.
A second report was later issued by the European-Mediterranean Seismological Centre (EMSC), which listed it as a magnitude 4.5 earthquake as well.
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 Callejon de Romulo (pop. 490) located 33 km from the epicenter, Santo Domingo Armenta (pop. 2,600) 39 km away, Santiago Tepextla (pop. 1,400) 39 km away, Corralero (pop. 1,700) 39 km away, El Ciruelo (pop. 2,200) 42 km away, San Nicolas (pop. 3,300) 48 km away, Cuajinicuilapa (pop. 10,300) 54 km away, and Pinotepa Nacional (pop. 29,600) 58 km away.
Other towns or cities near the epicenter where the quake might have been felt as very weak shaking include Santa Maria Huazolotitlan (pop. 4,800) located 67 km from the epicenter.
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: Oct 18, 2021 18:10:21 UTC -
Local time at epicenter: Monday, Oct 18, 2021 11:10 am (GMT -7)
Magnitude: 4.5
Depth: 9.0 km
Epicenter latitude / longitude: 15.99°N / 98.45°W (North Pacific Ocean, Mexico)
Antipode: 15.99°S / 81.55°E
Nearby towns and cities:
33 km (21 mi) SSW of Callejon de Romulo (pop: 494) --> See nearby quakes!
39 km (24 mi) S of Santiago Tepextla (pop: 1,420) --> See nearby quakes!
39 km (24 mi) SW of Corralero (pop: 1,740) --> See nearby quakes!
42 km (26 mi) SSW of El Ciruelo (pop: 2,220) --> See nearby quakes!
48 km (30 mi) S of San Nicolas (pop: 3,270) --> See nearby quakes!
54 km (33 mi) S of Cuajinicuilapa (pop: 10,300) --> See nearby quakes!
58 km (36 mi) SW of Santiago Pinotepa Nacional (pop: 29,600) --> See nearby quakes!
67 km (42 mi) WSW of Santa Maria (pop: 4,760) --> See nearby quakes!
69 km (43 mi) SW of San Pedro Jicayan (pop: 4,710) --> See nearby quakes!
389 km (242 mi) S of Mexico (pop: 12,294,200) --> See nearby quakes!
Weather at epicenter at time of quake:
Broken Clouds 28.1°C (83 F), humidity: 74%, wind: 3 m/s (5 kts) from WSW
Primary data source: SSN (Servicio Sismológico Nacional)
Estimated released energy: 3.5 x 1011 joules (98.6 megawatt hours, equivalent to 84.8 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.
4.310 km19 Km SW of Corralero, MexicoUSGS

User reports for this quake (1)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Ciudad de México / not felt : Movimiento muy ligero de objetos colgantes (reported through our app)  
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