Moderate mag. 4.9 earthquake - South Pacific Ocean, 98 km west of La Ligua, Petorca Province, Valparaiso, Chile, on Wednesday, Sep 15, 2021 3:47 am (GMT -5) -

Updated: Sep 17, 2021 01:04 GMT -
I felt this quake
Moderate mag. 4.9 earthquake - South Pacific Ocean, 98 km west of La Ligua, Petorca Province, Valparaiso, Chile, on Wednesday, Sep 15, 2021 3:47 am (GMT -5)

Moderate magnitude 4.9 earthquake at 10 km depth

15 Sep 08:56 UTC: First to report: GFZ after 9 minutes.
Update Wed, 15 Sep 2021, 09:00
Moderate magnitude 4.9 earthquake 98 km northwest of La Ligua, Chile
4.9 quake 15 Sep 3:47 am (GMT -5)
4.9 quake 15 Sep 3:47 am (GMT -5)
A magnitude 4.9 earthquake near La Ligua, Petorca Province, Valparaiso, Chile, was reported only 13 minutes ago by the German Research Centre for Geosciences (GFZ), considered one of the key international agencies that monitor seismic activity worldwide. The earthquake occurred at a shallow depth of 10 km beneath the epicenter early morning on Wednesday, September 15th, 2021, at 3:47 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 European-Mediterranean Seismological Centre (EMSC), which listed it as a magnitude 4.9 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 La Ligua (pop. 24,900) located 98 km from the epicenter.
Other towns or cities near the epicenter where the quake might have been felt as very weak shaking include Valparaiso (pop. 282,400) located 114 km from the epicenter, Viña del Mar (pop. 294,600) 117 km away, Hacienda La Calera (pop. 49,100) 117 km away, and Quillota (pop. 67,800) 122 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.
If you were or still are in this area during the quake help others with your feedback and report it here.
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Earthquake data

I felt this quake
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Date & time: Sep 15, 2021 08:47:00 UTC -
Local time at epicenter: Wednesday, Sep 15, 2021 3:47 am (GMT -5)
Magnitude: 4.9
Depth: 10.0 km
Epicenter latitude / longitude: 32.13°S / 72.2°W (South Pacific Ocean, Chile)
Antipode: 32.13°N / 107.8°E
Nearby towns and cities:
98 km (61 mi) WNW of La Ligua (Petorca) (pop: 24,900) --> See nearby quakes!
114 km (71 mi) NNW of Valparaiso (pop: 282,400) --> See nearby quakes!
117 km (72 mi) NNW of Viña del Mar (pop: 294,600) --> See nearby quakes!
117 km (73 mi) NW of Hacienda La Calera (pop: 49,100) --> See nearby quakes!
122 km (76 mi) NW of Quillota (pop: 67,800) --> See nearby quakes!
124 km (77 mi) NW of Quilpué (pop: 130,300) --> See nearby quakes!
128 km (79 mi) NW of Villa Alemana (pop: 97,300) --> See nearby quakes!
172 km (107 mi) NNW of San Antonio (pop: 85,700) --> See nearby quakes!
207 km (129 mi) NW of Santiago (pop: 4,837,300) --> See nearby quakes!
224 km (139 mi) NW of Puente Alto (pop: 510,400) --> See nearby quakes!
Weather at epicenter at time of quake:
Clear Sky 12.1°C (54 F), humidity: 79%, wind: 10 m/s (20 kts) from S
Primary data source: GFZ (German Research Centre for Geosciences)
Estimated released energy: 1.4 x 1012 joules (392 megawatt hours, equivalent to 338 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.
Mag.DepthLocationSource
4.910 kmOff Coast of Central ChileGFZ
5.02 kmOFFSHORE COQUIMBO, CHILEEMSC
5.010.8 km104 Km WNW of La Ligua, ChileUSGS
4.840 kmOff Coast of Central ChileUSP

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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santa rosa / Very weak shaking (MMI II)
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