Information on the earthquake: moderate mag. Earthquake 4.8 – 116 km south of Bayanhongor, Bayankhongor, Bayanhongor Aymag, Mongolia, on Thursday, September 23, 2021 at 8:03 am (GMT +8)
Moderate magnitude earthquake 4.8 to 10 km deep
September 23 00:14 UTC: First to report: GFZ after 10 minutes.
Updated Thu Sep 23 2021, 12:18 AM
Magnitude 4.8 earthquake strikes near Bayanhongor, Bayankhongor, Bayanhongor Aymag, Mongolia
Earthquake 4.8 23 September 08:03 (GMT +8)
Our monitoring service identified a second report from the Euro-Mediterranean Seismological Center (EMSC) which listed the earthquake at a magnitude of 5.5.
Cities near the epicenter where the quake could have been felt as very weak tremors include Bayanhongor (pop. 26,300) located 116 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 : 23 Sep 2021 12:03:44 UTC –
Local time at epicenter: Thursday 23 Sep 2021 08:03 (GMT +8)
Magnitude: 4.8
Depth: 10.0 km
Latitude / longitude of epicenter: 45.15 ° N / 100.79 ° E↗ 
(Bayanhongor Aymag, Mongolia)
Antipode: 45.15 ° S / 79.21 ° W↗
Nearby towns and villages:
116 km (72 mi) south of Bayanhongor (Bayanhongor) (pop: 26,300) -> See earthquakes nearby!
121 km (75 mi) to WNW of Hovd (Bogd, vörhangay) (pop: 27,900) -> Observe the earthquakes nearby!
198 km (123 mi) southwest of Gere d’Arubaï (Taragt, Övörhangay) (pop: 25,600) -> Observe the earthquakes nearby!
164 mi (264 km) south of Cecerleg (Arhangay) (pop: 5,880) -> Watch the earthquakes nearby!
275 km (171 mi) southwest of Kharkhorin (Övörhangay) (pop: 8,980) -> Watch the earthquakes nearby!
338 km (210 mi) to WNW of Dalandzadgad (Khankhongor, mnögovĭ) (pop: 15,100) -> Observe the earthquakes nearby!
375 km (233 mi) southwest of Ulanhudag (Aimak center) (pop: 1,500) -> Observe the earthquakes nearby!
377 km (234 mi) ESE of Altay (Yesunbulag, Govĭ-Altay) (pop: 15,800) -> Watch the earthquakes nearby!
418 km (260 mi) southeast of Oulia-Sontai (Dzabkhan) (pop: 16,200) -> Observe the earthquakes nearby!
558 km (347 mi) WW of Ulaanbaatar (pop: 844,800) -> See nearby earthquakes!
Broken clouds
12.9 ° C (55 F), humidity: 35%, wind: 6 m / s (12 kts) from EMain data source: GFZ (German Geoscience Research Center)
Estimated energy released: 1×1012 joules (278 megawatt hours, equivalent to 239 tonnes of TNT) Find out more
If you did NOT feel the earthquake although you are in the area, please report it! Your contribution is valuable to earthquake science, seismic risk analysis and mitigation efforts. You can use your device’s location or the map to show where you were during the earthquake. Thank you!
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.
| Mag. | Depth | Site | Source |
| 4.8 | 10 km | Mongolia | GFZ |
| 4.9 | 10 km | CENTRAL MONGOLIA | EMSC |
| 4.9 | 10 km | 129 Km WNW from Hovd, Mongolia | USGS |
Previous earthquakes in the same region
Click here to search our database for previous earthquakes in the same area since 1900!