Strong mag. 6.6 earthquake - Tonga on Friday, 15 June 1984 at 14:22 (GMT)

Strong mag. 6.6 earthquake  - Tonga on Friday, 15 June 1984 at 14:22 (GMT)

Strong magnitude 6.6 earthquake at 247 km depth

Date & time: 15 Jun 1984 02:22:23 UTC###AGESTRINGCOPY###
Magnitude: 6.6
Depth: 246.6 km
Epicenter latitude / longitude: 15.816°S / 174.831°W (Tonga)
Nearest volcano: Tafu-Maka (81 km / 50 mi)
Nearby towns and cities:
112 km (69 mi) W of Hihifo (pop: 815)
328 km (204 mi) NNW of Neiafu (Vava‘u) (pop: 4,320)
348 km (216 mi) SW of Asau (Vaisigano, Samoa) (pop: 6,640)
396 km (246 mi) SW of Apia (Tuamasaga, Samoa) (pop: 40,400)
448 km (278 mi) N of Pangai (Ha'apai) (pop: 1,740)
475 km (295 mi) WSW of Pago Pago (Ma'Oputasi, Eastern District, American Samoa) (pop: 11,500)
593 km (369 mi) N of Nuku‘alofa (Nuku'alofa, Tongatapu) (pop: 22,400)
624 km (388 mi) E of Labasa (Northern Division, Fiji) (pop: 27,900)
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!) More info
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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.
MagnitudeDepthLocationSource
M 6.6247 kmTongaUSGS
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 6.6 quake Tonga 15 June 14:22 UTC

More info
Recorded aftershocks, latest first (6 quakes):
  • 31 Oct 1984 21:36 UTC
    | M 4.6 |
    191.5 km (119 mi) depth
    |
    106 km (66 mi) distance
    | USGS | Details
  • 30 Oct 1984 08:47 UTC
    | M 4.6 |
    121.7 km (75.6 mi) depth
    |
    61 km (38 mi) distance
    | USGS | Details
  • 19 Oct 1984 14:37 UTC
    | M 6.0 |
    121.1 km (75.2 mi) depth
    |
    95 km (59 mi) distance
    | USGS | Strong mag. 6.0 earthquake - Tonga on Friday, 19 October 1984 at 14:37 (GMT)
  • 06 Oct 1984 02:52 UTC
    | M 5.8 |
    33 km (20.5 mi) depth
    |
    112 km (70 mi) distance
    | USGS | Details
  • 25 Jul 1984 19:30 UTC
    | M 4.8 |
    33 km (20.5 mi) depth
    |
    37 km (23 mi) distance
    | USGS | Details
  • 01 Jul 1984 21:00 UTC
    | M 5.0 |
    243.6 km (151.4 mi) depth
    |
    63 km (39 mi) distance
    | USGS | Details

Earlier earthquakes in the same area

Strong mag. 6.6 earthquake - Tonga on Friday, 15 June 1984 at 14:22 (GMT)
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