Get our newsletter!
Check out our volcano tours on VolcanoAdventures.com!
Volcanoes & Earthquakes - new app for Android
Volcanoes & Earthquakes - app for iPhone & iPad

Our New Book
Volcano Discoveries: "One of the most eye-catching guides to the world’s volcanoes ever published.
Volcano Tours
Our expert volcanologists and photographers offer unique travel experiences: volcano expeditions, photo tours, and relaxed walking & study tours.
Volcano Adventure Guide
Excellent information for anyone wishing to visit and enjoy active volcanoes safely. Detailed guidelines to 42 different volcanoes around the world.
Guaranteed tours:
19-26 Sep 2020: Pearl of the Aegean - Santorini - Santorini Island (Greece)
10-18 Oct 2020: From Stromboli to Etna - Sicila and Eolian Islands (Italy)
14-27 Nov 2020: Desert, salt and volcanoes - Danakil desert (Ethiopia)
7-16 Dec 2020: Magic Minutes: Chile Solar Eclipse 2020 - Chile
: spaces available / : guaranteed / : few spaces left / : booked out
Interactive map of latest earthquakes and active volcanoes in the world

Great mag. 8.6 earthquake - Off the West Coast of Northern Sumatra (Indonesia) on Wednesday, 11 April 2012

Great mag. 8.6 earthquake - Off the West Coast of Northern Sumatra (Indonesia) on Wednesday, 11 April 2012
Date & time: Wednesday, 11 April 2012 08:38 UTC
Magnitude: 8.6
Depth: 20.0 km
Epicenter latitude / longitude: 2.327°N / 93.063°E (Indonesia)
Primary data source: USGS
Estimated released energy: 5 x 1017 joules (1.4 x 105 gigawatt hours, equivalent to 1.2 x 108 tons of TNT or 7486.7 atomic bombs!) [learn more]
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.
TimeMag. / DepthLocationSource
So far, we have no data about this quake from any other agency. For small quakes reported only by the relevant national agency, this is normal. For magnitudes above around 4.5, there should normally be at least 2 or 3 international agencies to report the same quake.
Note: for quakes of 2012 and earlier, our database often contains only records from USGS.

User experience reports for this quake

There are no reports for this quake yet. If you felt it or were nearby when it occurred, be the first to report it!
to top
to top

Aftershocks of the 8.6 quake: Off the West Coast of Northern Sumatra (Indonesia), 11 Apr 2012 08h38

Show info about this
List of recorded aftershocks, latest first (616 quakes):
  • 03 Apr 2015 06:04 UTC
    | M 4.9 |
    10 km (6.2 mi) depth
    |
    380 km (236 mi) distance
    | GFZ | Details
  • 27 Mar 2015 20:25 UTC
    | M 4.6 |
    10 km (6.2 mi) depth
    |
    435 km (270 mi) distance
    | GFZ | Details
  • 27 Mar 2015 18:51 UTC
    | M 4.9 |
    110 km (68.4 mi) depth
    |
    850 km (528 mi) distance
    | GFZ | Details
  • 27 Mar 2015 03:39 UTC
    | M 5.0 |
    37 km (23 mi) depth
    |
    412 km (256 mi) distance
    | GFZ | Details
  • 26 Mar 2015 03:20 UTC
    | M 4.8 |
    10 km (6.2 mi) depth
    |
    599 km (372 mi) distance
    | GFZ | Details
  • 22 Mar 2015 18:12 UTC
    | M 5.1 |
    10 km (6.2 mi) depth
    |
    380 km (236 mi) distance
    | EMSC | Details
  • 21 Mar 2015 14:54 UTC
    | M 4.6 |
    44 km (27.3 mi) depth
    |
    569 km (353 mi) distance
    | GFZ | Details
  • 13 Mar 2015 00:54 UTC
    | M 4.8 |
    40 km (24.9 mi) depth
    |
    650 km (404 mi) distance
    | GFZ | Details
  • 11 Mar 2015 09:12 UTC
    | M 4.8 |
    30 km (18.6 mi) depth
    |
    467 km (290 mi) distance
    | EMSC | Details
  • 05 Mar 2015 00:07 UTC
    | M 5.2 |
    10 km (6.2 mi) depth
    |
    491 km (305 mi) distance
    | GFZ | Details
  • 03 Mar 2015 10:37 UTC
    | M 6.2 |
    30 km (18.6 mi) depth
    |
    717 km (445 mi) distance
    | GFZ | Strong mag. 6.2 earthquake - Southern Sumatra, Indonesia on Tuesday, 3 March 2015
  • 02 Mar 2015 23:48 UTC
    | M 4.7 |
    29 km (18 mi) depth
    |
    440 km (273 mi) distance
    | GFZ | Details
  • 02 Mar 2015 14:19 UTC
    | M 4.8 |
    10 km (6.2 mi) depth
    |
    421 km (262 mi) distance
    | GFZ | Details
  • 02 Mar 2015 10:33 UTC
    | M 4.7 |
    10 km (6.2 mi) depth
    |
    425 km (264 mi) distance
    | GFZ | Details
  • 25 Feb 2015 08:29 UTC
    | M 4.8 |
    10 km (6.2 mi) depth
    |
    456 km (284 mi) distance
    | GFZ | Details
  • 15 Feb 2015 10:14 UTC
    | M 4.6 |
    10 km (6.2 mi) depth
    |
    462 km (287 mi) distance
    | GFZ | Details
    • Show all

Map of aftershocks

to top

Significant earthquakes in the same area since 1900

Great mag. 8.6 earthquake - Off the West Coast of Northern Sumatra (Indonesia) on Wednesday, 11 April 2012

More on VolcanoDiscovery:

Live Volcano Webcams
Watch live volcanoes
Eruption Specials
Tours to erupting volcanoes: From time to time, we organize special tours to see volcanoes in eruption. These are often announced only few days or weeks in advance. Find out more!
Photo of the Week:
Week 36: Mon 31 Aug - Sun 6 Sep, 2020
Photo of the Week
Vote for your favorite or submit photos
Daily volcano map
Daily active volcano map
Active volcanoes map: Check which volcanoes are currently active (erupting). Our daily updated maps give a quick overview.
 
Why is there advertising on this site?

Support us?


Maintaining the volcano and earthquake news sections on this website, the free Volcano Webcams tool and interactive map widget is a free-time, both time- and server cost intensive effort.
If you find the information useful and would like to support us, and help keep it alive and improve it, please consider making a small donation (PayPal or Online cc payment).
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.