Information on the earthquake: moderate mag. 4.3 earthquake

Moderate magnitude earthquake 4.3 to 10 km deep

Sep 21 13:50 UTC: First to report: EMSC after 30 minutes.

Updated Tue Sep 21, 2021, 13:54

Moderate 4.3 earthquake strikes near Puerto Lebu, Provincia de Arauco, Region del Biobio, Chile

4.3 earthquake September 21 08:20 (GMT -5)

Just 34 minutes ago, a 4.3 magnitude earthquake struck near Puerto Lebu, Arauco province, del Biobio region, Chile. The tremor was recorded on the morning of Tuesday, September 21, 2021, at 8:20 a.m. local time, at a shallow depth of 10 km below the surface.
The event was classified by the Euro-Mediterranean Seismological Center (EMSC), the first seismological agency to report it.
Cities near the epicenter where the quake could have been felt as very weak tremors include Puerto Lebu (population 22,300) located 94 km from the epicenter.
VolcanoDiscovery will automatically update the magnitude and depth if these change and follow up if other significant earthquake news becomes available. If you are in the region, please share your experience with us through our reporting mechanism, online or through our mobile app. This will help us provide more first-hand updates to anyone in the world who is interested in learning more about this earthquake.

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Earthquake data

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Date and hour : 21 Sep 2021 13:20:21 UTC –
Local time at epicenter: Tuesday Sep 21, 2021 8:20 am (GMT -5)
Magnitude: 4.3
Depth: 10.0 km

Latitude / longitude of epicenter: 37.08 ° S / 74.48 ° W↗ (South Pacific Ocean, Chile)
Antipode: 37.08 ° N / 105.52 ° E↗

Nearby towns and villages:
94 km (58 mi) northwest of Puerto Lebu (Arauco) (pop: 22,300) -> Observe the earthquakes nearby!
110 km (68 mi) to WNW of Curanilahue (Arauco) (pop: 30,600) -> Observe the earthquakes nearby!
117 km (73 mi) west of Lota (pop: 49,800) -> Watch the earthquakes nearby!
119 km (74 mi) west of Coronelle (pop: 92,900) -> See nearby earthquakes!
128 km (79 mi) OSO of Talcahuano (pop: 253,000) -> See nearby earthquakes!
130 km (81 mi) west of Chiguayante (pop: 82,500) -> Observe the earthquakes nearby!
130 km (81 mi) to OSO of Design (pop: 215,400) -> Observe the earthquakes nearby!
218 km (135 mi) OSO of Chillan (pop: 150,400) -> Observe the earthquakes nearby!
524 km (325 mi) southwest of Puente Alto (pop: 510 400) -> Observe the earthquakes nearby!
532 km (331 mi) southwest of Santiago (pop: 4,837,300) -> Watch the earthquakes nearby!

Weather at the epicenter at the time of the earthquake:
Clear sky

11.3 ° C (52 F), humidity: 81%, wind: 8 m / s (15 kts) from S

Main data source: EMSC (European-Mediterranean Seismological Center)

Estimated energy released: 1.8 x 10¹¹ joules (49.4 megawatt hours, equivalent to 42.5 tonnes of TNT) Find out more

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Data for the same earthquake reported by different agencies

Info: The more agencies report the same earthquake and publish similar data, the more confidence you can have in the data. It normally takes up to a few hours for the seismic parameters to be calculated with near optimum accuracy.