Strong mag. 6.5 earthquake - Tonga (Samoa) on Wednesday, 18 June 1980 at 10:49 (GMT)

Strong mag. 6.5 earthquake  - Tonga (Samoa) on Wednesday, 18 June 1980 at 10:49 (GMT)

Strong magnitude 6.5 earthquake at 43 km depth

Date & time: 18 Jun 1980 10:49:10 UTC###AGESTRINGCOPY###
Magnitude: 6.5
Depth: 43.0 km
Epicenter latitude / longitude: 15.268°S / 173.57°W (Samoa)
Nearest volcano: West Mata (27 km / 17 mi)
Nearby towns and cities:
80 km (50 mi) NNE of Hihifo (Tonga) (pop: 815)
216 km (134 mi) SW of Vailoa (pop: 769)
219 km (136 mi) SSW of Asau (Vaisigano) (pop: 6,640)
230 km (143 mi) SW of Mulifanua (pop: 4,510)
238 km (148 mi) SSW of Safotu (Gaga'ifomauga) (pop: 1,210)
247 km (153 mi) SW of Afega (Malie, Tuamasaga) (pop: 1,900)
251 km (156 mi) SW of Apia (Tuamasaga) (pop: 40,400)
675 km (420 mi) NNE of Nuku‘alofa (Nuku'alofa, Tongatapu, Tonga) (pop: 22,400)
Primary data source: USGS
Estimated released energy: 3.5 x 1014 joules (98.6 gigawatt hours, equivalent to 84802 tons of TNT or 5.3 atomic bombs!) More info
[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 6.543 kmTonga (Samoa)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 yet. If you felt it be the first to report it!
Volcanoes & Earthquakes - new app for Android

Aftershocks of the 6.5 quake Tonga (Samoa) 18 June 10:49 UTC

More info
Recorded aftershocks, latest first (25 quakes):
  • 12 Oct 1980 04:30 UTC
    | M 4.6 |
    33 km (20.5 mi) depth
    |
    24 km (15 mi) distance
    | USGS | Details
  • 09 Oct 1980 16:19 UTC
    | M 6.0 |
    33 km (20.5 mi) depth
    |
    20 km (13 mi) distance
    | USGS | Strong mag. 6.0 earthquake - Tonga (Samoa) on Thursday, 9 October 1980 at 16:19 (GMT)
  • 08 Oct 1980 09:43 UTC
    | M 5.5 |
    33 km (20.5 mi) depth
    |
    48 km (30 mi) distance
    | USGS | Details
  • 04 Oct 1980 02:08 UTC
    | M 4.7 |
    107 km (66.5 mi) depth
    |
    40 km (25 mi) distance
    | USGS | Details
  • 01 Jan 1970 00:00 UTC
    | M |
    0 km (0 mi) depth
    |
    18181 km (11297 mi) distance
    | | Details
  • 17 Sep 1980 05:36 UTC
    | M 5.4 |
    33 km (20.5 mi) depth
    |
    22 km (14 mi) distance
    | USGS | Details
  • 17 Sep 1980 05:07 UTC
    | M 5.6 |
    33 km (20.5 mi) depth
    |
    3 km (2 mi) distance
    | USGS | Details
  • 15 Sep 1980 23:30 UTC
    | M 5.3 |
    68 km (42.3 mi) depth
    |
    46 km (28 mi) distance
    | USGS | Details
  • 14 Sep 1980 12:32 UTC
    | M 4.8 |
    33 km (20.5 mi) depth
    |
    6 km (3 mi) distance
    | USGS | Details
  • 30 Aug 1980 09:42 UTC
    | M 5.0 |
    33 km (20.5 mi) depth
    |
    47 km (29 mi) distance
    | USGS | Details
  • 24 Aug 1980 20:10 UTC
    | M 6.2 |
    39 km (24.2 mi) depth
    |
    12 km (8 mi) distance
    | USGS | Strong mag. 6.2 earthquake - Tonga (Samoa) on Sunday, 24 August 1980 at 20:10 (GMT)
  • 17 Aug 1980 10:09 UTC
    | M 4.9 |
    61 km (37.9 mi) depth
    |
    37 km (23 mi) distance
    | USGS | Details
  • 01 Jan 1970 00:00 UTC
    | M |
    0 km (0 mi) depth
    |
    18181 km (11297 mi) distance
    | | Details
  • 01 Jan 1970 00:00 UTC
    | M |
    0 km (0 mi) depth
    |
    18181 km (11297 mi) distance
    | | Details
  • 25 Jul 1980 04:29 UTC
    | M 4.7 |
    10 km (6.2 mi) depth
    |
    97 km (60 mi) distance
    | USGS | Details
  • 01 Jan 1970 00:00 UTC
    | M |
    0 km (0 mi) depth
    |
    18181 km (11297 mi) distance
    | | Details
  • Show all

Earlier earthquakes in the same area

Strong mag. 6.5 earthquake - Tonga (Samoa) on Wednesday, 18 June 1980 at 10:49 (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.