Moderate mag. 4.3 earthquake - North Pacific Ocean, 63 km southwest of Crucecita, Mexico, on Thursday, 21 Jan 2021 1:34 am (GMT -6) -

Moderate mag. 4.3 earthquake - North Pacific Ocean, 63 km southwest of Crucecita, Mexico, on Thursday, 21 Jan 2021 1:34 am (GMT -6)

Moderate magnitude 4.3 earthquake at 16 km depth

21 Jan 08:00 UTC: First to report: SSN after 26 minutes.
Update Thu, 21 Jan 2021, 08:06
Light 4.3 quake hits near Crucecita, Santa María Huatulco, Oaxaca, Mexico
4.3 quake 21 Jan 1:34 am (GMT -6)
4.3 quake 21 Jan 1:34 am (GMT -6)
Mexico's National Seismological Service (SSN) reported a magnitude 4.3 quake in Mexico near Crucecita, Santa María Huatulco, Oaxaca, 32 minutes ago. The earthquake hit early morning on Thursday 21 January 2021 at 1:34 am local time at a shallow depth of 16 km. Magnitude and other quake parameters can still change in the coming hours as the agency continues to process seismic data.
A second report was later issued by the European-Mediterranean Seismological Centre (EMSC), which listed it as a magnitude 4.3 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 San Agustinillo (pop. 290) located 30 km from the epicenter, Puerto Angel (pop. 2,600) 31 km away, San Pedro Pochutla (pop. 13,700) 40 km away, and San Miguel Figueroa (pop. 1,100) 47 km away.
Other towns or cities near the epicenter where the quake might have been felt as very weak shaking include Santo Domingo de Morelos (pop. 1,600) located 49 km from the epicenter, Huatulco (pop. 7,400) 56 km away, Crucecita (pop. 15,100) 63 km away, Brisas de Zicatela (pop. 9,800) 69 km away, and Puerto Escondido (pop. 25,900) 75 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: 21 Jan 2021 07:34:10 UTC -
Local time at epicenter: Thursday, 21 Jan 2021 1:34 am (GMT -6)
Magnitude: 4.3
Depth: 16.0 km
Epicenter latitude / longitude: 15.4°N / 96.58°W (North Pacific Ocean, Mexico)
Nearby towns and cities:
30 km (19 mi) S of San Agustinillo (pop: 291) --> See nearby quakes!
40 km (25 mi) SSW of San Pedro Pochutla (pop: 13,700) --> See nearby quakes!
49 km (31 mi) S of Santo Domingo de Morelos (pop: 1,620) --> See nearby quakes!
50 km (31 mi) SSE of San Bernardino (pop: 893) --> See nearby quakes!
56 km (35 mi) SSW of Huatulco (pop: 7,410) --> See nearby quakes!
63 km (39 mi) SW of Crucecita (pop: 15,100) --> See nearby quakes!
66 km (41 mi) S of Quelové (pop: 1,040) --> See nearby quakes!
67 km (42 mi) SE of Santa Maria Colotepec (pop: 1,370) --> See nearby quakes!
75 km (46 mi) SE of Puerto Escondido (pop: 25,900) --> See nearby quakes!
523 km (325 mi) SSE of Mexico City (pop: 12,294,200) --> See nearby quakes!
Weather at epicenter at time of quake:
Clear Sky 21.7°C (71 F), humidity: 78%, wind: 3 m/s (6 kts) from NW
Primary data source: SSN (Servicio Sismológico Nacional)
Estimated released energy: 1.8 x 1011 joules (49.4 megawatt hours, equivalent to 42.5 tons of TNT) More 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.
MagnitudeDepthLocationSource
M 4.316 km40 Km Al SUROESTE De S PEDRO POCHUTLA, OAX, MexicoSSN
M 3.810 kmOFFSHORE OAXACA, MEXICOEMSC
M 3.710 km35 Km S of Puerto Ángel, MexicoUSGS

User reports for this quake (3)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
San agustinillo (107.1 km WSW of epicenter) [Map] / Moderate shaking (MMI V) / rattling, vibrating / 2-5 s
San agustinillo (107.1 km WSW of epicenter) [Map] / Moderate shaking (MMI V) / rattling, vibrating / 2-5 s
Mazunte / Weak shaking (MMI III)
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