Help Ukraine

Very strong mag. 6.4 earthquake - 126 km northwest of Ternate, North Maluku, Indonesia, on Monday, July 23, 1984 at 16:03 GMT

Very strong mag. 6.4 earthquake - 126 km northwest of Ternate, North Maluku, Indonesia, on Monday, July 23, 1984 at 16:03 GMT

Very strong magnitude 6.4 earthquake at 26 km depth

1 Jan 00:00 UTC: First to report: USGS after 30 seconds.
Date & time: Jul 23, 1984 16:03:39 UTC
Magnitude: 6.4
Depth: 25.9 km
Epicenter latitude / longitude: 1.384°N / 126.419°E (Molucca Sea, Indonesia)
Antipode: 1.384°S / 53.581°W
Nearest volcano: Hiri (114 km / 71 mi)
Nearby towns and cities:
126 km (78 mi) WNW of Ternate (pop: 101,700) --> See nearby quakes!
137 km (85 mi) E of Bitung (pop: 137,400) --> See nearby quakes!
146 km (91 mi) WNW of Sofifi (Kota Tidore Kepulauan) (pop: 36,200) --> See nearby quakes!
161 km (100 mi) E of Laikit, Laikit II (Dimembe) (Kabupaten Minahasa Utara) (pop: 8,000) --> See nearby quakes!
168 km (104 mi) E of Tondano (Kabupaten Minahasa) (pop: 33,300) --> See nearby quakes!
175 km (109 mi) E of Manado (pop: 451,900) --> See nearby quakes!
180 km (112 mi) E of Tomohon (pop: 27,600) --> See nearby quakes!
181 km (112 mi) WSW of Tobelo (Kabupaten Halmahera Utara) (pop: 10,000) --> See nearby quakes!
385 km (239 mi) ENE of Gorontalo (pop: 144,200) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 2.5 x 1014 joules (69.8 gigawatt hours, equivalent to 60036 tons of TNT or 3.8 atomic bombs!) | about seismic energy
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!
If you did NOT feel the quake although you were in the area, please report it! Your contribution is valuable to earthquake science, seismic 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.
Mag.DepthLocationSource
6.426 kmMolucca Sea (Indonesia)USGS
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.
Volcanoes & Earthquakes - new app for Android

Aftershocks

[More info]

Recorded aftershocks, latest first (18 quakes)

Date and timeMag
Depth		LocationDetails
Jan 5, 1985 18:22
37 years ago
5.0

33 km		105 km NW of Ternate, North Maluku, IndonesiaMore
Jan 1, 1985 17:57
37 years ago
5.1

66 km		88 km W of Ternate, North Maluku, IndonesiaMore
Nov 23, 1984 09:28
38 years ago
4.9

33 km		116 km SE of Bitung, North Sulawesi, IndonesiaMore
Nov 8, 1984 15:33
38 years ago
4.8

91 km		120 km W of Ternate, North Maluku, IndonesiaMore
Oct 28, 1984 06:43
38 years ago
4.4

51 km		152 km NW of Ternate, North Maluku, IndonesiaMore
Oct 28, 1984 06:04
38 years ago
4.6

39 km		131 km NW of Ternate, North Maluku, IndonesiaMore
Oct 26, 1984 09:12
38 years ago
5.3

53 km		115 km E of Bitung, North Sulawesi, IndonesiaMore
Oct 26, 1984 08:49
38 years ago
6.3

56 km		124 km E of Bitung, North Sulawesi, IndonesiaMore
Oct 19, 1984 17:45
38 years ago
5.8

76 km		58 km E of Bitung, North Sulawesi, IndonesiaMore
Oct 9, 1984 02:08
38 years ago
4.8

77 km		138 km NW of Ternate, North Maluku, IndonesiaMore
Aug 3, 1984 00:54
38 years ago
5.1

59 km		112 km SE of Bitung, North Sulawesi, IndonesiaMore
Jul 26, 1984 00:00
38 years ago
4.8

33 km		96 km E of Bitung, North Sulawesi, IndonesiaMore
Jul 25, 1984 20:10
38 years ago
4.7

33 km		120 km W of Ternate, North Maluku, IndonesiaMore
Jul 25, 1984 19:34
38 years ago
5.9

44 km		105 km NW of Ternate, North Maluku, IndonesiaMore
Jul 25, 1984 17:23
38 years ago
5.4

34 km		116 km NW of Ternate, North Maluku, IndonesiaMore
Jul 25, 1984 17:21
38 years ago
4.9

33 km		118 km NW of Ternate, North Maluku, IndonesiaMore
Jul 25, 1984 17:14
38 years ago
5.0

33 km		119 km NW of Ternate, North Maluku, IndonesiaMore
Jul 23, 1984 17:14
38 years ago
4.9

63 km		121 km E of Bitung, North Sulawesi, IndonesiaMore

Earlier earthquakes in the same area

Try our free app!
Volcanoes & Earthquakes - new app for Android
Android | iOS version
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:
  • Improved multilanguage support
  • Tsunami alerts
  • Faster responsiveness
Thanks to your past donations, these features have been added recently:
  • Earthquake archive from 1900 onwards
  • Detailed quake stats
  • Additional seismic 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.