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Moderate mag. 4.5 earthquake - South Pacific Ocean, 81 km northwest of Concepcion, Region del Biobio, Chile, on Wednesday, Nov 24, 2021 at 5:03 pm (GMT -5) -

Moderate mag. 4.5 earthquake - South Pacific Ocean, 81 km northwest of Concepcion, Region del Biobio, Chile, on Wednesday, Nov 24, 2021 at 5:03 pm (GMT -5) Moderate mag. 4.5 earthquake - South Pacific Ocean, 81 km northwest of Concepcion, Region del Biobio, Chile, on Wednesday, Nov 24, 2021 at 5:03 pm (GMT -5)

Moderate magnitude 4.5 earthquake at 15 km depth

24 Nov 22:06 UTC: First to report: EMSC after 4 minutes.
24 Nov 22:12: Magnitude recalculated from 4.1 to 4.9. Hypocenter depth recalculated from 27.0 to 10.0 km (from 16.8 to 6.2 mi). Epicenter location corrected by 11 km (7 mi) towards ENE.
24 Nov 22:13: Magnitude recalculated from 4.9 to 4.8. Hypocenter depth recalculated from 10.0 to 15.0 km (from 6.2 to 9.3 mi). Epicenter location corrected by 36 km (22 mi) towards W.
24 Nov 22:23: Magnitude recalculated from 4.8 to 4.5. Epicenter location corrected by 3.5 km (2.2 mi) towards SE.
Update Wed, 24 Nov 2021, 22:18

Magnitude 4.8 earthquake strikes near Concepcion, Provincia de Concepción, Region del Biobio, Chile

4.8 quake 24 Nov 5:03 pm (GMT -5)
4.8 quake 24 Nov 5:03 pm (GMT -5)
A magnitude 4.8 earthquake near Concepcion, Provincia de Concepción, Region del Biobio, Chile, was reported only 15 minutes ago by the European-Mediterranean Seismological Centre (EMSC), considered one of the key international agencies that monitor seismic activity worldwide. The earthquake occurred at a shallow depth of 15 km beneath the epicenter in the afternoon on Wednesday, November 24th, 2021, at 5:03 pm 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 German Research Centre for Geosciences (GFZ), which listed it as a magnitude 4.9 earthquake.
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 Talcahuano (pop. 253,000) located 74 km from the epicenter, Tomé (pop. 46,700) 83 km away, Concepcion (pop. 215,400) 84 km away, Penco (pop. 46,100) 84 km away, Chiguayante (pop. 82,500) 92 km away, and Coronel (pop. 92,900) 92 km away.
Other towns or cities near the epicenter where the quake might have been felt as very weak shaking include Lota (pop. 49,800) located 96 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 details

Date & timeNov 24, 2021 22:03:08 UTC -
Local time at epicenterWednesday, Nov 24, 2021 at 5:03 pm (GMT -5)
Depth15.0 km
Epicenter latitude / longitude36.46°S / 73.83°W (South Pacific Ocean, Chile)
Antipode36.46°N / 106.17°E
Shaking intensityWeak shaking
Felt4 reports
Primary data sourceEMSC (European-Mediterranean Seismological Centre)
Nearest volcanoNevados de Chillán (223 km / 139 mi)
Nearby towns and cities70 km (44 mi) WNW of Talcahuano (pop: 253,000) | Show on map | Quakes nearby
80 km (50 mi) WNW of Tomé (pop: 46,700) | Show on map | Quakes nearby
81 km (50 mi) WNW of Concepcion (pop: 215,400) | Show on map | Quakes nearby
81 km (50 mi) WNW of Penco (pop: 46,100) | Show on map | Quakes nearby
88 km (55 mi) NW of Chiguayante (pop: 82,500) | Show on map | Quakes nearby
89 km (55 mi) NW of Coronel (pop: 92,900) | Show on map | Quakes nearby
92 km (57 mi) NW of Lota (pop: 49,800) | Show on map | Quakes nearby
155 km (96 mi) W of Chillan (pop: 150,400) | Show on map | Quakes nearby
227 km (141 mi) WSW of Talca (pop: 197,500) | Show on map | Quakes nearby
442 km (275 mi) SW of Santiago de Chile (pop: 4,837,300) | Show on map | Quakes nearby
Weather at epicenter at time of quakeClear Sky 16.1°C (61 F), humidity: 88%, wind: 1 m/s (2 kts) from W
Estimated seismic energy released3.5 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.
4.910 kmNear Coast of Central ChileGFZ
4.312 km62 Km WNW of Talcahuano, ChileUSGS
4.312 kmNear Coast of Central ChileRaspberryShake


Seismic station: Las Campanas Astronomical Observatory, Chile (LCO/IU network) | Distance from quake: 878 km / 546 mi | Show on map | Station Info
Seismic station Las Campanas Astronomical Observatory, Chile: vertical movement plot around time of quake (source: IRIS/BUD)
Seismogram (vertical component) around time of quake. Thin dotted red line indicates time of quake. Seismic waves arrive some time later, depending on distance. Source: IRIS Buffer of Uniform Data (BUD) webtool
Show more

User reports for this quake (5)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Leave a comment if you find a particular report interesting or want to add to it.
Flag as inappropriate.
Mark as helpful or interesting.
Send your own user report!
Talcahuano, Provincia de Concepción, Biobío (73.8 km ESE of epicenter) [Map] / Very weak shaking (MMI II) / single vertical bump / 5-10 s : Se sintió con movimiento de golpe y ruido. | 9 users found this interesting.  
47 km of Talcahuano, Provincia de Concepción, Biobío (23.4 km ESE of epicenter) [Map] / Weak shaking (MMI III) / 10-15 s (reported through our app)
Concepción / Light shaking (MMI IV) / 5-10 s
Santiago / not felt (reported through our app)
Talcahuano / Very weak shaking (MMI II) / 2-5 s (reported through our app)

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