Strong mag. 6.8 earthquake - 107km ENE of Hihifo, Tonga on Monday, 30 March 2015

Strong mag. 6.4 earthquake - 109km NE of Hihifo, Tonga, on Sunday, March 29, 2015 20:18:00

Strong mag. 6.4 earthquake  - 109km NE of Hihifo, Tonga, on Sunday, March 29, 2015 20:18:00

Strong magnitude 6.4 earthquake at 12 km depth

30 Mar 09:10 UTC: First to report: USGS after 52 minutes.
Mar 30 10:10: Magnitude recalculated from 6.8 to 6.4.
Hypocenter depth recalculated from 10.0 to 11.5 km.
Date & time: 30 Mar 2015 08:18:00 UTC###AGESTRINGCOPY###
Local time at epicenter: Sunday, March 29, 2015 20:18:00
Magnitude: 6.4
Depth: 11.5 km
Epicenter latitude / longitude: 15.388°S / 172.9038°W (Samoa)
Nearest volcano: Curacoa (84 km / 52 mi)
Nearby towns and cities:
114 km (71 mi) NE of Hihifo (Tonga) (pop: 815)
193 km (120 mi) SSW of Vailoa (pop: 769)
197 km (122 mi) SSW of Mulifanua (pop: 4,510)
210 km (130 mi) S of Asau (pop: 6,640)
210 km (130 mi) SSW of Afega (Malie) (pop: 1,900)
212 km (132 mi) SW of Apia (pop: 40,400)
219 km (136 mi) SW of Lufilufi (pop: 1,070)
222 km (138 mi) SSW of Safotu (pop: 1,210)
Primary data source: USGS
Estimated released energy: 2.5 x 1014 joules (69.8 gigawatt hours, equivalent to 60036 tons of TNT or 3.8 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 6.412 km109km NE of Hihifo, TongaUSGS
M 6.410 km SAMOA ISLANDS REGIONEMSC
M 6.410 kmTonga IslandsGFZ
M 6.812 kmSamoa Islands RegionGeoAu

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 6.4 quake 109km NE of Hihifo, Tonga, Sunday, March 29, 2015 20:18:00

More info
Recorded aftershocks, latest first (18 quakes):
  • 21 Aug 2015 06:56 UTC
    | M 4.8 |
    10 km (6.2 mi) depth
    |
    33 km (21 mi) distance
    | EMSC | Details
  • 07 Aug 2015 10:17 UTC
    | M 4.5 |
    32.7 km (20.3 mi) depth
    |
    24 km (15 mi) distance
    | USGS | Details
  • 28 Jul 2015 05:57 UTC
    | M 4.8 |
    30.5 km (19 mi) depth
    |
    76 km (47 mi) distance
    | USGS | Details
  • 08 Jul 2015 17:25 UTC
    | M 4.5 |
    10 km (6.2 mi) depth
    |
    60 km (37 mi) distance
    | EMSC | Details
  • 12 Jun 2015 11:07 UTC
    | M 6.0 |
    40 km (24.9 mi) depth
    |
    33 km (20 mi) distance
    | EMSC | Strong mag. 6.0 earthquake - TONGA on Friday, 12 June 2015 at 11:07 (GMT)
  • 11 Jun 2015 20:23 UTC
    | M 4.7 |
    38 km (23.6 mi) depth
    |
    88 km (55 mi) distance
    | EMSC | Details
  • 08 Jun 2015 15:01 UTC
    | M 5.4 |
    10 km (6.2 mi) depth
    |
    39 km (24 mi) distance
    | GFZ | Details
  • 30 May 2015 17:18 UTC
    | M 5.9 |
    69 km (42.9 mi) depth
    |
    77 km (48 mi) distance
    | GFZ | Details
  • 12 May 2015 10:03 UTC
    | M 5.0 |
    10 km (6.2 mi) depth
    |
    49 km (31 mi) distance
    | GFZ | Details
  • 09 May 2015 05:45 UTC
    | M 4.5 |
    34 km (21.1 mi) depth
    |
    71 km (44 mi) distance
    | EMSC | Details
  • 06 May 2015 09:33 UTC
    | M 4.5 |
    35 km (21.7 mi) depth
    |
    42 km (26 mi) distance
    | USGS | Details
  • 14 Apr 2015 08:13 UTC
    | M 5.7 |
    10 km (6.2 mi) depth
    |
    49 km (31 mi) distance
    | GFZ | Details
  • 12 Apr 2015 09:01 UTC
    | M 4.6 |
    29 km (18 mi) depth
    |
    33 km (20 mi) distance
    | EMSC | Details
  • 11 Apr 2015 10:07 UTC
    | M 4.6 |
    10 km (6.2 mi) depth
    |
    33 km (20 mi) distance
    | EMSC | Details
  • 07 Apr 2015 00:46 UTC
    | M 6.4 |
    10 km (6.2 mi) depth
    |
    51 km (32 mi) distance
    | GFZ | Strong mag. 6.4 earthquake - Tonga Islands on Tuesday, 7 April 2015 at 00:46 (GMT)
  • 01 Apr 2015 11:06 UTC
    | M 5.5 |
    17 km (10.6 mi) depth
    |
    64 km (40 mi) distance
    | GFZ | Details
  • 30 Mar 2015 18:02 UTC
    | M 5.8 |
    10 km (6.2 mi) depth
    |
    32 km (20 mi) distance
    | GFZ | Details
  • 30 Mar 2015 08:48 UTC
    | M 6.5 |
    15.5 km (9.6 mi) depth
    |
    15 km (9 mi) distance
    | USGS | Strong mag. 6.5 earthquake - 99km ENE of Hihifo, Tonga, on Sunday, March 29, 2015 20:48:26

Earlier earthquakes in the same area

Strong mag. 6.4 earthquake - 109km NE of Hihifo, Tonga, on Sunday, March 29, 2015 20:18:00
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