Moderate mag. 4.4 earthquake - Indian Ocean, 5.5 km west of Pulau Simeulucut Island, Aceh, Indonesia, on Thursday, 4 Feb 2021 1:33 am (GMT +7) -

Moderate mag. 4.4 earthquake - Indian Ocean, 5.5 km west of Pulau Simeulucut Island, Aceh, Indonesia, on Thursday, 4 Feb 2021 1:33 am (GMT +7)

Moderate magnitude 4.4 earthquake at 10 km depth

3 Feb 18:41 UTC: First to report: EMSC after 8 minutes.
3 Feb 18:45: Now using data updates from BMKG
4 Feb 10:20: Magnitude recalculated from 4.5 to 4.4. Epicenter location corrected by 1.1 km (0.7 mi) towards S.
Update Wed, 3 Feb 2021, 18:45
Moderate earthquake of magnitude 4.5 just reported 55 km west of Sinabang, Indonesia
4.5 quake 4 Feb 1:33 am (GMT +7)
4.5 quake 4 Feb 1:33 am (GMT +7)
A magnitude 4.5 earthquake near Sinabang, Kabupaten Simeulue, Aceh, Indonesia, was reported only 11 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 10 km beneath the epicenter early morning on Thursday 4 February 2021 at 1:33 am 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.
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 Sinabang (pop. 15,000) located 55 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.
Download the Volcanoes & Earthquakes app to get one of the fastest seismic alerts online:
Android | IOS

Earthquake data:

Date & time: 3 Feb 2021 18:33:41 UTC -
Local time at epicenter: Thursday, 4 Feb 2021 1:33 am (GMT +7)
Magnitude: 4.4
Depth: 10.0 km
Epicenter latitude / longitude: 2.52°N / 95.89°E (Indian Ocean, Indonesia)
Nearest volcano: Kembar (246 km / 153 mi)
Nearby towns and cities:
55 km (34 mi) W of Sinabang (Kabupaten Simeulue) (pop: 15,000) --> See nearby quakes!
183 km (113 mi) S of Meulaboh (Kabupaten Aceh Barat) (pop: 35,100) --> See nearby quakes!
213 km (132 mi) W of Singkil (pop: 46,800) --> See nearby quakes!
296 km (184 mi) WSW of Kabanjahe (pop: 57,200) --> See nearby quakes!
312 km (194 mi) WSW of Binjai (pop: 228,800) --> See nearby quakes!
325 km (202 mi) WSW of Sunggal (pop: 157,900) --> See nearby quakes!
327 km (203 mi) SSW of Lhokseumawe (pop: 89,000) --> See nearby quakes!
330 km (205 mi) WSW of Medan (pop: 1,751,000) --> See nearby quakes!
342 km (212 mi) S of Banda Aceh (pop: 250,800) --> See nearby quakes!
352 km (219 mi) WSW of Percut (pop: 311,100) --> See nearby quakes!
Weather at epicenter at time of quake:
Overcast Clouds 27.7°C (82 F), humidity: 74%, wind: 1 m/s (1 kts) from N
Primary data source: BMKG (Meteorological, Climatological, and Geophysical Agency of Indonesia)
Estimated released energy: 2.5 x 1011 joules (69.8 megawatt hours, equivalent to 60 tons of TNT) More info
Show interactive Map
[smaller] [bigger]
If you felt this quake (or if you were near the epicenter), please share your experience and submit a short "I felt it" report! Other users would love to hear about it!
Also if you did NOT feel the quake although you were in the area, please report it! Your contribution is valuable also to earthquake science and earthquake hazard analysis and mitigation efforts. You can use your device location or the map to indicate where you were during the earthquake. Thank you!

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.
4.410 kmOff West Coast of Northern Sumatra, IndonesiaBMKG
4.647 kmNorthern Sumatra, IndonesiaGFZ
4.510 km46 Km W of Sinabang, IndonesiaUSGS

User reports for this quake

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
There are no user reports for this quake yet. If you felt it be the first to report it!
Volcanoes & Earthquakes - new app for Android

Earlier earthquakes in the same area since 1900

Map of earlier quakes

Why is there advertising on this site?
Support us - Help us upgrade our services!
We truly love working to bring you the latest volcano and earthquake data from around the world. Maintaining our website and our free apps does require, however, considerable time and resources.
We need financing to increase hard- and software capacity as well as support our editor team. We're aiming to achieve uninterrupted service wherever an earthquake or volcano eruption unfolds, and your donations can make it happen! Every donation will be highly appreciated. If you find the information useful and would like to support our team in integrating further features, write great content, and in upgrading our soft- and hardware, please make a donation (PayPal or Online credit card payment).

Planned features:
  • Weather reports
  • Tsunami alerts
  • Design upgrades
  • Faster responsiveness
Thanks to your past donations, these features have been added recently:
  • Earthquake archive from 1900 onwards
  • Additional seismic data sources
  • Improved content in English
Download and Upgrade the Volcanoes & Earthquakes app to get one of the fastest seismic and volcano alerts online:
Android | IOS
Thank you!
Copyrights: VolcanoDiscovery and other sources as noted.
Use of material: Most texts and images, in particular photographs, on this website are protected by copyright. Further reproduction and use of without authorization is usually not consented. If you are not sure or need licensing rights for photographs, for example for publications and commercial use, please contact us.