Strong mag. 6.2 earthquake - Tonga (Samoa) on Friday, 3 March 1978 at 10:48 (GMT)

Strong mag. 6.2 earthquake  - Tonga (Samoa) on Friday, 3 March 1978 at 10:48 (GMT)

Strong magnitude 6.2 earthquake at 33 km depth

Date & time: 3 Mar 1978 10:48:11 UTC###AGESTRINGCOPY###
Magnitude: 6.2
Depth: 33.0 km
Epicenter latitude / longitude: 15.288°S / 173.517°W (Samoa)
Nearest volcano: West Mata (33 km / 21 mi)
Nearby towns and cities:
80 km (50 mi) NNE of Hihifo (Tonga) (pop: 815)
215 km (133 mi) SW of Vailoa (pop: 769)
218 km (136 mi) SSW of Asau (Vaisigano) (pop: 6,640)
227 km (141 mi) SW of Mulifanua (pop: 4,510)
237 km (147 mi) SSW of Safotu (Gaga'ifomauga) (pop: 1,210)
244 km (152 mi) SW of Afega (Malie, Tuamasaga) (pop: 1,900)
248 km (154 mi) SW of Apia (Tuamasaga) (pop: 40,400)
675 km (419 mi) NNE of Nuku‘alofa (Nuku'alofa, Tongatapu, Tonga) (pop: 22,400)
Primary data source: USGS
Estimated released energy: 1.3 x 1014 joules (35 gigawatt hours, equivalent to 30089 tons of TNT or 1.9 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.
MagnitudeDepthLocationSource
M 6.233 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 6.2 quake Tonga (Samoa) 3 March 10:48 UTC

More info
Recorded aftershocks, latest first (14 quakes):
  • 04 Aug 1978 01:17 UTC
    | M 5.3 |
    33 km (20.5 mi) depth
    |
    66 km (41 mi) distance
    | USGS | Details
  • 01 Aug 1978 20:29 UTC
    | M 5.5 |
    33 km (20.5 mi) depth
    |
    20 km (13 mi) distance
    | USGS | Details
  • 27 Jul 1978 18:25 UTC
    | M 5.8 |
    33 km (20.5 mi) depth
    |
    61 km (38 mi) distance
    | USGS | Details
  • 27 Jul 1978 13:41 UTC
    | M 5.4 |
    33 km (20.5 mi) depth
    |
    45 km (28 mi) distance
    | USGS | Details
  • 21 Jul 1978 07:22 UTC
    | M 4.9 |
    33 km (20.5 mi) depth
    |
    37 km (23 mi) distance
    | USGS | Details
  • 01 Jan 1970 00:00 UTC
    | M |
    0 km (0 mi) depth
    |
    18177 km (11295 mi) distance
    | | Details
  • 11 Jun 1978 14:27 UTC
    | M 6.2 |
    33 km (20.5 mi) depth
    |
    5 km (3 mi) distance
    | USGS | Strong mag. 6.2 earthquake - Tonga (Samoa) on Sunday, 11 June 1978 at 14:27 (GMT)
  • 30 May 1978 18:57 UTC
    | M 5.1 |
    38 km (23.6 mi) depth
    |
    66 km (41 mi) distance
    | USGS | Details
  • 13 May 1978 16:41 UTC
    | M 5.4 |
    33 km (20.5 mi) depth
    |
    15 km (9 mi) distance
    | USGS | Details
  • 11 May 1978 17:53 UTC
    | M 4.4 |
    333 km (206.9 mi) depth
    |
    55 km (34 mi) distance
    | USGS | Details
  • 01 Jan 1970 00:00 UTC
    | M |
    0 km (0 mi) depth
    |
    18177 km (11295 mi) distance
    | | Details
  • 01 Jan 1970 00:00 UTC
    | M |
    0 km (0 mi) depth
    |
    18177 km (11295 mi) distance
    | | Details
  • 25 Apr 1978 17:01 UTC
    | M 4.4 |
    166 km (103.1 mi) depth
    |
    42 km (26 mi) distance
    | USGS | Details
  • 01 Jan 1970 00:00 UTC
    | M |
    0 km (0 mi) depth
    |
    18177 km (11295 mi) distance
    | | Details

Earlier earthquakes in the same area

Strong mag. 6.2 earthquake - Tonga (Samoa) on Friday, 3 March 1978 at 10:48 (GMT)
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