Terremoto moderado mag. 4.2 - North Pacific Ocean, 20 km SSE of Crucecita, Mexico, lunes, 18 oct 2021 18:23 (GMT -5) -

Terremoto moderado mag. 4.2 - North Pacific Ocean, 20 km SSE of Crucecita, Mexico, lunes, 18 oct 2021 18:23 (GMT -5)

Terremoto moderado magnitud 4.2 at 8 km depth

18 Oct 23:47 UTC: Primero en informar: EMSC después de 23 minutos.
18 Oct 23:49: Ahora usando una nueva fuente de datos: SSN
Update Mon, 18 Oct 2021, 23:51
Moderate 4.2 quake hits near Crucecita, Santa María Huatulco, Oaxaca, Mexico
4.2 quake 18 Oct 6:23 pm (GMT -5)
4.2 quake 18 Oct 6:23 pm (GMT -5)
A very shallow magnitude 4.2 earthquake was reported early evening near Crucecita, Santa María Huatulco, Oaxaca, Mexico.
According to Mexico's National Seismological Service (SSN), the quake hit on Monday, October 18th, 2021, at 6:23 pm local time at a very shallow depth of 8 km. Shallow earthquakes are felt more strongly than deeper ones as they are closer to the surface. 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 European-Mediterranean Seismological Centre (EMSC), which listed it as a magnitude 4.2 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 Residencial Conejos (pop. 30) located 18 km from the epicenter, Crucecita (pop. 15,100) 20 km away, Sector H Tres (pop. 2,800) 21 km away, Santa Maria (pop. 7,400) 39 km away, La Herradura (pop. 1,100) 40 km away, and Benito Juarez (pop. 1,300) 43 km away.
Other towns or cities near the epicenter where the quake might have been felt as very weak shaking include San Pedro Pochutla (pop. 13,700) located 48 km from the epicenter, Merced del Potrero (pop. 2,200) 49 km away, and Puerto Angel (pop. 2,600) 49 km away.

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Earthquake data

Fecha & hora: 18 Oct 2021 23:23:49 UTC -
Hora local al epicentro: lunes, 18 oct 2021 18:23 (GMT -5)
Magnitud: 4.2
Prof.: 8.0 km
Epicentro latitud / longitud: 15.61°N / 96.04°W (Océano Pacífico Norte, México)
Antipode: 15.61°S / 83.96°E
Nearby towns and cities:
18 km al SSE de Residencial Conejos (pop: 30) --> ¡Vea sismos cercanos!
20 km al SSE de Crucecita (pop: 15,100) --> ¡Vea sismos cercanos!
39 km al SE de Santa Maria (pop: 7,410) --> ¡Vea sismos cercanos!
48 km al ESE de San Pedro Pochutla (pop: 13,700) --> ¡Vea sismos cercanos!
49 km al S de La Merced del Potrero (pop: 2,180) --> ¡Vea sismos cercanos!
57 km al SO de Santiago Astata (pop: 2,210) --> ¡Vea sismos cercanos!
60 km al SE de Candelaria Loxicha (pop: 2,070) --> ¡Vea sismos cercanos!
61 km al SSO de Santa María Zapotitlán (pop: 1,100) --> ¡Vea sismos cercanos!
64 km al ESE de Piedras Negras (pop: 1,140) --> ¡Vea sismos cercanos!
536 km al SE de Ciudad de México (pop: 12,294,200) --> ¡Vea sismos cercanos!
Weather at epicenter at time of quake:
Broken Clouds 28.7°C (84 F), humidity: 75%, wind: 3 m/s (5 kts) from SW
Fuente primaria de datos: SSN (Servicio Sismológico Nacional)
Energía liberada estimada: 1.3 x 1011 joules (35 MWh, equivalente a 30.1 toneladas de TNT) Más info
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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.
RevistaProf.UbicaciónFuente
4.28 kmMexico: 20 Km Al SURESTE De CRUCECITA, OAXSSN
4.28 kmOFFSHORE OAXACA, MEXICOEMSC

User reports for this quake (2)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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secrets resort and spa (19.3 km N of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 2-5 s
la cruecita / Light shaking (MMI IV) / rattling, vibrating / 5-10 s
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