Light mag. 4.2 earthquake - South Pacific Ocean, 37 km northwest of La Ligua, Petorca Province, Valparaiso, Chile, on Friday, 29 Jan 2021 9:51 pm (GMT -3) -

Light mag. 4.2 earthquake - South Pacific Ocean, 37 km northwest of La Ligua, Petorca Province, Valparaiso, Chile, on Friday, 29 Jan 2021 9:51 pm (GMT -3)

Light magnitude 4.2 earthquake at 58 km depth

30 Jan 01:10 UTC: First to report: EMSC after 18 minutes.
30 Jan 01:10: Now using data updates from GUG (U. Chile)
Update Sat, 30 Jan 2021, 01:15
Moderate 4.2 quake hits near La Ligua, Petorca Province, Valparaiso, Chile
4.2 quake 29 Jan 9:51 pm (GMT -3)
4.2 quake 29 Jan 9:51 pm (GMT -3)
An earthquake of magnitude 4.2 occurred in the evening on Friday 29 January 2021 at 9:51 pm local time near La Ligua, Petorca Province, Valparaiso, Chile, as reported by the National Seismological Center of the University of Chile.
According to preliminary data, the quake was located at a moderately shallow depth of 57.9 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.
A second report was later issued by the European-Mediterranean Seismological Centre (EMSC), which listed it as a magnitude 4.2 earthquake as well.
Towns or cities near the epicenter where the quake might have been felt as very weak shaking include La Ligua (pop. 24,900) located 37 km from the epicenter, Hacienda La Calera (pop. 49,100) 63 km away, Viña del Mar (pop. 294,600) 80 km away, Valparaiso (pop. 282,400) 81 km away, Quilpué (pop. 130,300) 84 km away, Illapel (pop. 22,800) 84 km away, Villa Alemana (pop. 97,300) 84 km away, and San Felipe (pop. 59,300) 94 km away.
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Earthquake data:

Date & time: 30 Jan 2021 00:51:39 UTC -
Local time at epicenter: Friday, 29 Jan 2021 9:51 pm (GMT -3)
Magnitude: 4.2
Depth: 57.9 km
Epicenter latitude / longitude: 32.305°S / 71.579°W (South Pacific Ocean, Chile)
Nearest volcano: Tupungatito (206 km / 128 mi)
Nearby towns and cities:
37 km (23 mi) WNW of La Ligua (Petorca) (pop: 24,900) --> See nearby quakes!
63 km (39 mi) NNW of Hacienda La Calera (pop: 49,100) --> See nearby quakes!
71 km (44 mi) NNW of Quillota (pop: 67,800) --> See nearby quakes!
80 km (50 mi) N of Viña del Mar (pop: 294,600) --> See nearby quakes!
81 km (51 mi) N of Valparaiso (pop: 282,400) --> See nearby quakes!
84 km (52 mi) N of Quilpue (pop: 130,300) --> See nearby quakes!
84 km (52 mi) NNW of Villa Alemana (pop: 97,300) --> See nearby quakes!
94 km (58 mi) WNW of San Felipe (pop: 59,300) --> See nearby quakes!
155 km (96 mi) NW of Santiago de Chile (pop: 4,837,300) --> See nearby quakes!
173 km (107 mi) NW of Puente Alto (pop: 510,400) --> See nearby quakes!
Weather at epicenter at time of quake:
Broken Clouds 16.6°C (62 F), humidity: 93%, wind: 1 m/s (2 kts) from SSE
Primary data source: GUG (U. Chile)
Estimated released energy: 1.3 x 1011 joules (35 megawatt hours, equivalent to 30.1 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
4.258 km36 Km Al NO De La Ligua, ChileGUG (U. Chile)
4.220 kmOFFSHORE VALPARAISO, CHILEEMSC
4.261 km49 Km WNW of La Ligua, ChileUSGS

User reports for this quake (2)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
156.5 km SE of epicenter [Map] / Very weak shaking (MMI II) (reported through our app)
160.7 km SSE of epicenter [Map] / Weak shaking (MMI III) (reported through our app)
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Earlier earthquakes in the same area since 1900


Map of earlier quakes

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