Strong mag. 6.0 earthquake - Tonga Islands on Wednesday, 20 May 2015 at 00:30 (GMT)

Strong mag. 6.0 earthquake  - Tonga Islands on Wednesday, 20 May 2015 at 00:30 (GMT)

Strong magnitude 6.0 earthquake at 185 km depth

20 May 00:40 UTC: First to report: GFZ after 9 minutes.
May 20 07:10: Magnitude recalculated from 5.8 to 6.0.
Date & time: 20 May 2015 12:30:51 UTC###AGESTRINGCOPY###
Magnitude: 6.0
Depth: 185.0 km
Epicenter latitude / longitude: 19.25°S / 175.56°W (Tonga)
Nearest volcano: Metis Shoal (43 km / 27 mi)
Nearby towns and cities:
141 km (88 mi) WNW of Pangai (pop: 1,740)
179 km (111 mi) WSW of Neiafu (pop: 4,320)
213 km (133 mi) N of Nuku'alofa (pop: 22,400)
216 km (134 mi) NNW of Kolonga (pop: 1,100)
240 km (149 mi) NNW of ‘Ohonua (Ohonua) (pop: 1,240)
411 km (256 mi) SSW of Hihifo (pop: 815)
644 km (400 mi) E of Suva (Fiji) (pop: 77,400)
726 km (451 mi) SSW of Apia (Samoa) (pop: 40,400)
Primary data source: GFZ
Estimated released energy: 6.3 x 1013 joules (17.5 gigawatt hours, equivalent to 15080 tons of TNT or 0.9 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 6.0185 kmTonga IslandsGFZ
M 6.0173 km TONGAEMSC
M 6.0180 km128km WNW of Pangai, TongaUSGS
M 6.1165 kmTonga IslandsGeoAu

User reports for this quake (1)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Nuku'alofa (Tonga, 205 km S of epicenter) : One big shake then a few very small sway. (reported through EMSC)
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Aftershocks of the 6.0 quake Tonga Islands 20 May 00:30 UTC

More info
Recorded aftershocks, latest first (6 quakes):
  • 08 Aug 2015 08:40 UTC
    | M 4.8 |
    10 km (6.2 mi) depth
    |
    45 km (28 mi) distance
    | EMSC | Details
  • 27 Jul 2015 02:31 UTC
    | M 5.0 |
    227 km (141.1 mi) depth
    |
    36 km (22 mi) distance
    | GFZ | Details
  • 17 Jul 2015 22:26 UTC
    | M 4.7 |
    188 km (116.8 mi) depth
    |
    49 km (31 mi) distance
    | EMSC | Details
  • 23 Jun 2015 08:59 UTC
    | M 5.4 |
    122 km (75.8 mi) depth
    |
    52 km (32 mi) distance
    | GFZ | Details
  • 24 May 2015 18:10 UTC
    | M 5.4 |
    10 km (6.2 mi) depth
    |
    58 km (36 mi) distance
    | GFZ | Details
  • 24 May 2015 14:39 UTC
    | M 6.2 |
    10 km (6.2 mi) depth
    |
    53 km (33 mi) distance
    | GFZ | Strong mag. 6.2 earthquake - Fiji Islands Region on Sunday, 24 May 2015 at 14:39 (GMT)

Earlier earthquakes in the same area

Strong mag. 6.0 earthquake - Tonga Islands on Wednesday, 20 May 2015 at 00:30 (GMT)
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