Very strong mag. 6.3 earthquake - South Pacific Ocean, New Zealand, on Monday, September 17, 1984 at 09:08 (GMT)

Very strong mag. 6.3 earthquake - South Pacific Ocean, New Zealand, on Monday, September 17, 1984 at 09:08 (GMT)

Very strong magnitude 6.3 earthquake at 10 km depth

1 Jan 00:00 UTC: First to report: USGS after 30 seconds.
Date & time: Sep 17, 1984 09:08:48 UTC
Magnitude: 6.3
Depth: 10.0 km
Epicenter latitude / longitude: 32.157°S / 178.32°W (South Pacific Ocean, New Zealand)
Antipode: 32.157°N / 1.68°E
Nearest volcano: Volcano W (88 km / 55 mi)
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 1.8 x 1014 joules (49.4 gigawatt hours, equivalent to 42502 tons of TNT or 2.7 atomic bombs!) 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!
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
6.310 kmsouth of the Kermadec Islands (New Zealand)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 (23 quakes)

Date and timeMag
Depth
LocationDetails
Dec 31, 1984 05:01
37 years ago
5.0

33 km
South Pacific Ocean, New ZealandMore
Nov 26, 1984 17:31
37 years ago
5.6

50 km
South Pacific Ocean, New ZealandMore
Nov 8, 1984 13:16
37 years ago
5.3

33 km
South Pacific Ocean, New ZealandMore
Oct 23, 1984 02:09
37 years ago
5.0

166 km
South Pacific Ocean, New ZealandMore
Oct 11, 1984 04:51
37 years ago
4.8

33 km
South Pacific Ocean, New ZealandMore
Oct 10, 1984 16:28
37 years ago
5.3

33 km
South Pacific Ocean, New ZealandMore
Oct 10, 1984 12:18
37 years ago
5.1

33 km
South Pacific Ocean, New ZealandMore
Oct 9, 1984 02:41
37 years ago
4.6

33 km
South Pacific Ocean, New ZealandMore
Oct 2, 1984 06:21
37 years ago
4.1

360 km
South Pacific Ocean, New ZealandMore
Sep 27, 1984 09:42
37 years ago
4.6

33 km
South Pacific Ocean, New ZealandMore
Sep 27, 1984 04:16
37 years ago
4.9

33 km
South Pacific Ocean, New ZealandMore
Sep 24, 1984 15:10
37 years ago
5.0

33 km
South Pacific Ocean, New ZealandMore
Sep 24, 1984 15:05
37 years ago
5.0

33 km
South Pacific Ocean, New ZealandMore
Sep 24, 1984 14:52
37 years ago
5.2

39 km
South Pacific Ocean, New ZealandMore
Sep 22, 1984 23:40
37 years ago
4.8

33 km
South Pacific Ocean, New ZealandMore
Sep 22, 1984 21:44
37 years ago
6.1

44 km
South Pacific Ocean, New ZealandMore
Sep 22, 1984 11:43
37 years ago
5.7

33 km
South Pacific Ocean, New ZealandMore
Sep 22, 1984 10:15
37 years ago
5.5

33 km
South Pacific Ocean, New ZealandMore
Sep 21, 1984 18:43
37 years ago
4.8

33 km
South Pacific Ocean, New ZealandMore
Sep 19, 1984 20:23
37 years ago
5.2

33 km
South Pacific Ocean, New ZealandMore
Sep 19, 1984 04:32
37 years ago
5.8

33 km
South Pacific Ocean, New ZealandMore
Sep 19, 1984 03:50
37 years ago
5.6

33 km
South Pacific Ocean, New ZealandMore
Sep 17, 1984 10:38
37 years ago
4.8

33 km
South Pacific Ocean, New ZealandMore

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.