Strong mag. 6.3 earthquake - Tonga (Samoa) on Saturday, 2 April 1988 at 14:26 (GMT)

Strong mag. 6.3 earthquake  - Tonga (Samoa) on Saturday, 2 April 1988 at 14:26 (GMT)

Strong magnitude 6.3 earthquake at 33 km depth

Date & time: 2 Apr 1988 02:26:29 UTC###AGESTRINGCOPY###
Magnitude: 6.3
Depth: 33.0 km
Epicenter latitude / longitude: 15.447°S / 173.081°W (Samoa)
Nearest volcano: Curacoa (66 km / 41 mi)
Nearby towns and cities:
95 km (59 mi) NE of Hihifo (Tonga) (pop: 815)
206 km (128 mi) SSW of Vailoa (pop: 769)
212 km (132 mi) SSW of Mulifanua (pop: 4,510)
220 km (136 mi) SSW of Asau (Vaisigano) (pop: 6,640)
226 km (141 mi) SW of Afega (Malie, Tuamasaga) (pop: 1,900)
229 km (142 mi) SW of Apia (Tuamasaga) (pop: 40,400)
234 km (145 mi) SSW of Safotu (Gaga'ifomauga) (pop: 1,210)
672 km (417 mi) NNE of Nuku‘alofa (Nuku'alofa, Tongatapu, Tonga) (pop: 22,400)
Primary data source: USGS
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
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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 6.333 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!
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Aftershocks of the 6.3 quake Tonga (Samoa) 2 April 14:26 UTC

More info
Recorded aftershocks, latest first (14 quakes):
  • 10 Sep 1988 20:43 UTC
    | M 4.5 |
    33 km (20.5 mi) depth
    |
    81 km (50 mi) distance
    | USGS | Details
  • 30 Aug 1988 00:08 UTC
    | M 4.7 |
    33 km (20.5 mi) depth
    |
    55 km (34 mi) distance
    | USGS | Details
  • 26 Aug 1988 09:36 UTC
    | M 5.4 |
    33 km (20.5 mi) depth
    |
    40 km (25 mi) distance
    | USGS | Details
  • 26 Aug 1988 07:33 UTC
    | M 5.7 |
    77.8 km (48.3 mi) depth
    |
    18 km (11 mi) distance
    | USGS | Details
  • 22 Aug 1988 13:54 UTC
    | M 5.1 |
    33 km (20.5 mi) depth
    |
    79 km (49 mi) distance
    | USGS | Details
  • 20 Aug 1988 19:52 UTC
    | M 5.4 |
    33 km (20.5 mi) depth
    |
    57 km (36 mi) distance
    | USGS | Details
  • 15 Aug 1988 06:47 UTC
    | M 4.9 |
    33 km (20.5 mi) depth
    |
    79 km (49 mi) distance
    | USGS | Details
  • 30 Jul 1988 00:49 UTC
    | M 4.9 |
    33 km (20.5 mi) depth
    |
    45 km (28 mi) distance
    | USGS | Details
  • 11 Jun 1988 12:17 UTC
    | M 6.3 |
    35.7 km (22.2 mi) depth
    |
    65 km (41 mi) distance
    | USGS | Strong mag. 6.3 earthquake - Samoa Islands Region on Saturday, 11 June 1988 at 12:17 (GMT)
  • 20 Apr 1988 12:18 UTC
    | M 4.7 |
    33 km (20.5 mi) depth
    |
    27 km (17 mi) distance
    | USGS | Details
  • 07 Apr 1988 00:48 UTC
    | M 4.8 |
    81.4 km (50.6 mi) depth
    |
    24 km (15 mi) distance
    | USGS | Details
  • 02 Apr 1988 22:00 UTC
    | M 5.1 |
    33 km (20.5 mi) depth
    |
    17 km (10 mi) distance
    | USGS | Details
  • 02 Apr 1988 14:56 UTC
    | M 5.0 |
    33 km (20.5 mi) depth
    |
    43 km (27 mi) distance
    | USGS | Details
  • 02 Apr 1988 14:42 UTC
    | M 4.9 |
    33 km (20.5 mi) depth
    |
    5 km (3 mi) distance
    | USGS | Details

Earlier earthquakes in the same area

Strong mag. 6.3 earthquake - Tonga (Samoa) on Saturday, 2 April 1988 at 14:26 (GMT)
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