Information on the earthquake: moderate mag. Earthquake 4.7 – 10.6 km east of Padangsidempuan, north Sumatra, Indonesia, on Wednesday, August 11, 2021 at 12:19 p.m. (GMT +7)
Moderate magnitude earthquake 4.7 to 10 km deep
11 Aug 05:38 UTC: First to report: USGS after 19 minutes.
Update Wed Aug 11, 2021, 05:42 AM
Moderate-magnitude 4.7 earthquake strikes 11 km southeast of Padangsidempuan, Indonesia, around noon
4.7 earthquake 11 August 12:19 (GMT +7)
Our monitoring service identified a second report from the Euro-Mediterranean Seismological Center (EMSC) which also listed the magnitude 4.7 earthquake.
Based on preliminary seismic data, the quake was likely felt by many people in the epicenter area. It should not have caused any significant damage, other than objects falling from shelves, broken glass, etc.
In Padangsidempuan (100,600 inhabitants) located 11 km from the epicenter, the earthquake should have been felt as a slight tremor.
Weak tremors could have been felt in Sibolga (79,700 inhabitants) located 78 km from the epicenter.
Other towns close to the epicenter where the earthquake could have been felt as very weak tremors include Bandar (pop. 31,400) located 90 km from the epicenter and Rantauprapat (pop. 103,000) at 99 km.
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 let us know about your experience through our reporting mechanism, either online or via our mobile application. This will help us provide more first-hand updates to anyone in the world who is interested in learning more about this earthquake.
If you were or still are in this area during the earthquake help others with your comments and file a quick report here.
I felt this tremor
I didn’t feel it
Date and time: Aug 11, 2021 05:19:05 UTC –
Local time at epicenter: Wednesday 11 August 2021 12:19 (GMT +7)
Depth: 10.0 km
Latitude / longitude of epicenter: 1.3438 ° N / 99.36 ° E (North Sumatra, Indonesia)
Nearest volcano: Sibualbuali (26 km / 16 mi)
Nearby towns and villages:
11 km (7 mi) ESE of Padangsidempuan (pop: 100,600) -> See nearby earthquakes!
78 km (48 mi) southeast of Sibolga (pop: 79,700) -> See nearby earthquakes!
90 km (56 mi) SSO of Bandar (Kabupaten Labuhan Batu) (pop: 31,400) -> See nearby earthquakes!
99 km (62 mi) SSO of Rantauprapat (pop: 103,000) -> Watch the earthquakes nearby!
183 km (113 mi) south of Pematangsiantar (pop: 209,600) -> Observe the earthquakes nearby!
185 km (115 mi) south of Kisaran (pop: 129,900) -> See nearby earthquakes!
187 km (116 mi) SSO of Tanjungbalai (pop: 142,500) -> Observe the earthquakes nearby!
162 mi (261 km) to SSE of Medane (pop: 1,751,000) -> See nearby earthquakes!
278 km (173 mi) NNW of Padang (West Sumatra) (pop: 840 400) -> See earthquakes nearby!
327 km (203 mi) southwest of Kuala Lumpur, Malaysia) (pop: 1,454,000) -> See nearby earthquakes!
Clouds covered 28.5 ° C (83 F), humidity: 55%, wind: 2 m / s (3 kts) from WSW
Main data source: USGS (United States Geological Survey)
Estimated energy released: 7.1 x 1011 joules (197 megawatt hours, equivalent to 169 tonnes of TNT) More info
Also if you did NOT feel the tremor even if you were in the area, please report it! Your contribution is also valuable to earthquake science and 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.
|4.7||10 km||10 Km ESE from Padangsidempuan, Indonesia||USGS|
|4.7||40 km||NORTH OF SUMATRA, INDONESIA||EMSC|
|4.7||10 km||North Sumatra, Indonesia||GFZ|
User reports for this earthquake (2)
Leave a comment if you find a particular report interesting or if you want to enrich it.
Flag as inappropriate.
Mark as useful or interesting.
Submit your own user report!
Petaling Jaya / Very weak tremors (MMI II) / rattling, vibrations / 1-2 s : My chair wobbled
Previous earthquakes in the same region
Click here to search our database for previous earthquakes in the same area since 1900!