Strong mag. 6.1 earthquake - South of Tonga (New Zealand) on Monday, 20 September 1982 at 12:57 (GMT)

Strong mag. 6.1 earthquake  - South of Tonga (New Zealand) on Monday, 20 September 1982 at 12:57 (GMT)

Strong magnitude 6.1 earthquake at 33 km depth

Date & time: 20 Sep 1982 12:57:45 UTC###AGESTRINGCOPY###
Magnitude: 6.1
Profondeur: 33.0 km
Epicenter latitude / longitude: 26.93°S / 175.963°W (Nouvelle-Zélande)
Volcan le plus près: Hinepuia (142 km / 88 mi)
Nearby towns and cities:
631 km S de ‘Ohonua (Ohonua, 'Eua, Tonga) (pop: 1,240)
646 km S de Lapaha (Mua, Tongatapu, Tonga) (pop: 8,000)
649 km S de Nuku‘alofa (Nuku'alofa, Tongatapu, Tonga) (pop: 22,400)
Primary data source: USGS
Estimated released energy: 8.9 x 1013 joules (24.8 gigawatt hours, equivalent to 21301 tons of TNT or 1.3 atomic bombs!) [learn more]
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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.
MagnitudeProfondeurLocationSource
M 6.133 kmsouth of Tonga (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 yet. If you felt it be the first to report it!
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Aftershocks of the 6.1 quake South of Tonga (New Zealand) 20 September 12:57 UTC

More info
Recorded aftershocks, latest first (14 quakes):
  • 12 Mar 1983 05:51 UTC
    | M 4.5 |
    40 km (24.9 mi) depth
    |
    34 km (21 mi) distance
    | USGS | Details
  • 07 Jan 1983 23:48 UTC
    | M 5.3 |
    33 km (20.5 mi) depth
    |
    67 km (41 mi) distance
    | USGS | Details
  • 05 Jan 1983 11:47 UTC
    | M 5.4 |
    33 km (20.5 mi) depth
    |
    24 km (15 mi) distance
    | USGS | Details
  • 17 Dec 1982 21:15 UTC
    | M 5.6 |
    33 km (20.5 mi) depth
    |
    34 km (21 mi) distance
    | USGS | Details
  • 30 Nov 1982 10:34 UTC
    | M 4.5 |
    33 km (20.5 mi) depth
    |
    43 km (27 mi) distance
    | USGS | Details
  • 29 Nov 1982 10:12 UTC
    | M 4.8 |
    33 km (20.5 mi) depth
    |
    65 km (41 mi) distance
    | USGS | Details
  • 15 Oct 1982 22:33 UTC
    | M 4.7 |
    33 km (20.5 mi) depth
    |
    40 km (25 mi) distance
    | USGS | Details
  • 23 Sep 1982 23:59 UTC
    | M 4.9 |
    33 km (20.5 mi) depth
    |
    22 km (14 mi) distance
    | USGS | Details
  • 22 Sep 1982 21:25 UTC
    | M 5.2 |
    33 km (20.5 mi) depth
    |
    14 km (9 mi) distance
    | USGS | Details
  • 20 Sep 1982 19:32 UTC
    | M 5.3 |
    33 km (20.5 mi) depth
    |
    46 km (29 mi) distance
    | USGS | Details
  • 20 Sep 1982 19:30 UTC
    | M 4.7 |
    33 km (20.5 mi) depth
    |
    19 km (12 mi) distance
    | USGS | Details
  • 20 Sep 1982 17:05 UTC
    | M 5.8 |
    33 km (20.5 mi) depth
    |
    24 km (15 mi) distance
    | USGS | Details
  • 20 Sep 1982 13:48 UTC
    | M 5.9 |
    33 km (20.5 mi) depth
    |
    10 km (6 mi) distance
    | USGS | Details
  • 20 Sep 1982 13:19 UTC
    | M 5.1 |
    43 km (26.7 mi) depth
    |
    18 km (11 mi) distance
    | USGS | Details

Earlier earthquakes in the same area

Strong mag. 6.1 earthquake - South of Tonga (New Zealand) on Monday, 20 September 1982 at 12:57 (GMT)
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