Strong mag. 6.6 earthquake - Minahasa, Sulawesi, Indonesia, on Thursday, 27 October 1983 at 19:43 (GMT)

Strong mag. 6.6 earthquake  - Minahasa, Sulawesi, Indonesia, on Thursday, 27 October 1983 at 19:43 (GMT)

Strong magnitude 6.6 earthquake at 28 km depth

Date & time: 27 Oct 1983 07:43:48 UTC###AGESTRINGCOPY###
Magnitude: 6.6
Depth: 27.7 km
Epicenter latitude / longitude: 1.093°N / 120.833°E (Indonesia)
Nearest volcano: Una Una (165 km / 103 mi)
Nearby towns and cities:
65 km (40 mi) ENE of Jaleje (Central Sulawesi)
247 km (153 mi) NNE of Palu (Central Sulawesi) (pop: 282,400)
256 km (159 mi) WNW of Gorontalo (pop: 144,200)
277 km (172 mi) N of Poso (Central Sulawesi) (pop: 47,100)
315 km (195 mi) NW of Luwuk (Central Sulawesi) (pop: 47,800)
387 km (241 mi) ENE of Bontang (East Kalimantan) (pop: 101,700)
449 km (279 mi) W of Manado (North Sulawesi) (pop: 451,900)
1753 km (1089 mi) ENE of Jakarta (pop: 8,540,100)
Primary data source: USGS
Estimated released energy: 5 x 1014 joules (139 gigawatt hours, equivalent to 1.2 x 105 tons of TNT or 7.5 atomic bombs!) [learn more]
[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.
MagnitudeDepthLocationSource
M 6.628 kmMinahasa, Sulawesi, IndonesiaUSGS
Note: for quakes of 2012 and earlier, our database often contains only records from USGS.

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

Aftershocks of the 6.6 quake Minahasa, Sulawesi, Indonesia, 27 October 19:43 UTC

More info
Recorded aftershocks, latest first (7 quakes):
  • 20 Mar 1984 07:13 UTC
    | M 5.5 |
    128.5 km (79.8 mi) depth
    |
    120 km (74 mi) distance
    | USGS | Details
  • 26 Dec 1983 18:12 UTC
    | M 5.0 |
    17.4 km (10.8 mi) depth
    |
    36 km (23 mi) distance
    | USGS | Details
  • 11 Dec 1983 07:01 UTC
    | M 4.8 |
    231.9 km (144.1 mi) depth
    |
    71 km (44 mi) distance
    | USGS | Details
  • 23 Nov 1983 18:39 UTC
    | M 5.2 |
    17.2 km (10.7 mi) depth
    |
    18 km (11 mi) distance
    | USGS | Details
  • 14 Nov 1983 21:26 UTC
    | M 5.2 |
    33 km (20.5 mi) depth
    |
    48 km (30 mi) distance
    | USGS | Details
  • 13 Nov 1983 15:57 UTC
    | M 4.9 |
    159.2 km (98.9 mi) depth
    |
    45 km (28 mi) distance
    | USGS | Details
  • 13 Nov 1983 13:16 UTC
    | M 5.1 |
    590.8 km (367.1 mi) depth
    |
    82 km (51 mi) distance
    | USGS | Details

Earlier earthquakes in the same area

Strong mag. 6.6 earthquake - Minahasa, Sulawesi, Indonesia, on Thursday, 27 October 1983 at 19:43 (GMT)
Volcanoes & Earthquakes - new app for Android
 

More on VolcanoDiscovery

 
Why is there advertising on this site?

Support us!

Maintaining the website and our free apps is a time- and cost-intensive effort.
If you find the information useful and would like to support our team to develop further features and get the upgraded ad-free version, consider making a donation (PayPal or Online cc payment).
Planned features:
  • Weather reports
  • Tsunami alerts
  • Design upgrades
Thanks to your past donations, these features have been added recently:
  • Earthquake archive back to 1900
  • Additional data sources
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.