Information on the earthquake: moderate mag. Earthquake 4.5 – Bali Sea, 55 km west of Sumbawa Besar, Indonesia, Thursday, December 16, 2021 at 12:12 am (GMT +8)
Medium magnitude earthquake 4.5 to 10 km deep
Dec 15 16:21 UTC: First to report: EMSC after 9 minutes.
Dec 15 22:36: Now using USGS data updates
Update Wed 15 Dec 2021, 16:27
Magnitude 4.7 earthquake strikes near Matalam, Lombok, West Nusa Tenggara, Indonesia
4.7 earthquake December 16 00:12 (GMT +8)
According to the Euro-Mediterranean Seismological Center (EMSC), the earthquake struck on Thursday, December 16, 2021 at 12:12 a.m. local time at a shallow depth of 10 km. Shallow earthquakes are felt more strongly than deep ones because they are closer to the surface. The exact magnitude, epicenter and depth of the quake could be revised in the coming hours or minutes, as seismologists review the data and refine their calculations, or when other agencies release their report.
Based on preliminary seismic data, the quake should not have caused significant damage, but was likely felt by many as a slight vibration in the epicenter area.
Weak tremors could be felt in Labuan Lombok (10,000 inhabitants) located 35 km from the epicenter, Labuan Lombok (10,000 inhabitants) at 35 km, Sumbawa Besar (52,700 inhabitants) at 62 km, Pototano (5,000 inhabitants) 65 km and Praya (35,200 inhabitants) 83 km.
Other towns close to the epicenter where the earthquake could have been felt as very weak tremors include Gili Air (1,800 inhabitants) located 90 km from the epicenter, Matalam (318,700 inhabitants) 92 km away and Senggigi ( 5,000 inhabitants) at 97 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 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.
If you were or still are in this area during the earthquake help others with your comments and report it here.
Android | ios
Earthquake data
I felt this tremor
I didn’t feel it
Date and hour : December 15, 2021 04:12:41 PM UTC –
Local time at epicenter: Thursday December 16, 2021 12:12 am (GMT +8)
Magnitude: 4.5
Depth: 10.0 km
Latitude / longitude of epicenter: 8.3559 ° S / 116.9397 ° E↗ 
(Bali Sea, Indonesia)
Antipode: 8.356 ° N / 63.06 ° W↗
Nearest volcano: Rinjani (52 km / 32 mi)
Nearby towns and villages:
34 km (21 mi) ENE of Labuan Lombok (Kabupaten Lombok Timur) (pop: 10,000) -> See nearby earthquakes!
34 km (21 mi) ENE of Labuan Lombok (pop: 10,000) -> Watch the earthquakes nearby!
55 km (34 mi) to WNW of Sumbawa Besar (pop: 52,700) -> See nearby earthquakes!
60 km (37 mi) west of Pototano (Kabupaten Sumbawa) (pop: 5,000) -> Observe the earthquakes nearby!
83 km (52 mi) ENE of Praya (Kabupaten Lombok Tengah) (pop: 35,200) -> Observe the earthquakes nearby!
94 km (58 mi) ENE of Matalam (pop: 318,700) -> Observe the earthquakes nearby!
146 km (91 mi) east of Karangasem (pop: 31,900) -> Observe the earthquakes nearby!
169 km (105 mi) west of Subdued (pop: 49,000) -> Observe the earthquakes nearby!
192 km (120 mi) east of Denpasar (pop: 834 900) -> See earthquakes nearby!
206 km (128 mi) east of Singapore (pop: 133,800) -> Observe the earthquakes nearby!
76 km (47 mi) ENE of Lombok Island (pop: 3,311,000) -> See nearby earthquakes!
125 km (77 mi) to WNW of Pulau Sumbawa Island (pop: 1,391,300) -> See nearby earthquakes!
Main data source: USGS (United States Geological Survey)
Estimated energy released: 3.5 x 1011 joules (98.6 megawatt hours, equivalent to 84.8 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 earthquake parameters to be calculated with near optimum accuracy.
| Mag. | Depth | Site | Source |
| 4.5 | 10 km | 34 Km ENE from Labuan Lombok, Indonesia | USGS |
| 4.7 | 10 km | Sumbawa region, Indonesia | GFZ |
| 4.5 | 10 km | Sumbawa region, Indonesia | RaspberryShake |
| 4.7 | 10 km | LOMBOK REGION, INDONESIA | EMSC |
Previous earthquakes in the same region
Click here to search our database for previous earthquakes in the same area since 1900!