Major magnitude. 7.2 earthquake - South Sandwich Islands Region on Friday, 27 December 1991 at 04:05 (GMT)

Major magnitude. 7.2 earthquake  - South Sandwich Islands Region on Friday, 27 December 1991 at 04:05 (GMT)

Major magnitude 7.2 earthquake at 10 km depth

Date & time: 27 Dec 1991 04:05:58 UTC###AGESTRINGCOPY###
Magnitude: 7.2
Depth: 10.0 km
Epicenter latitude / longitude: 56.032°S / 25.266°W (South Georgia & South Sandwich Islands)
Nearest volcano: Hodson (138 km / 86 mi)
Primary data source: USGS
Estimated released energy: 4 x 1015 joules (1106 gigawatt hours, equivalent to 9.5 x 105 tons of TNT or 59.5 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 7.210 kmSouth Sandwich Islands regionUSGS
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 7.2 quake South Sandwich Islands Region 27 December 04:05 UTC

More info
Recorded aftershocks, latest first (47 quakes):
  • 21 Dec 1993 08:49 UTC
    | M 5.0 |
    33 km (20.5 mi) depth
    |
    68 km (42 mi) distance
    | USGS | Details
  • 13 Dec 1993 22:25 UTC
    | M 5.0 |
    33 km (20.5 mi) depth
    |
    159 km (99 mi) distance
    | USGS | Details
  • 01 Dec 1993 00:59 UTC
    | M 5.7 |
    33 km (20.5 mi) depth
    |
    163 km (101 mi) distance
    | USGS | Details
  • 22 Oct 1993 08:42 UTC
    | M 5.7 |
    33 km (20.5 mi) depth
    |
    156 km (97 mi) distance
    | USGS | Details
  • 08 Oct 1993 08:24 UTC
    | M 5.1 |
    33 km (20.5 mi) depth
    |
    64 km (39 mi) distance
    | USGS | Details
  • 09 Sep 1993 21:52 UTC
    | M 5.7 |
    110 km (68.4 mi) depth
    |
    130 km (81 mi) distance
    | USGS | Details
  • 16 Aug 1993 21:32 UTC
    | M 5.0 |
    33 km (20.5 mi) depth
    |
    99 km (62 mi) distance
    | USGS | Details
  • 19 Jul 1993 19:31 UTC
    | M 5.2 |
    33 km (20.5 mi) depth
    |
    144 km (89 mi) distance
    | USGS | Details
  • 04 Jun 1993 20:31 UTC
    | M 5.1 |
    33 km (20.5 mi) depth
    |
    152 km (94 mi) distance
    | USGS | Details
  • 22 May 1993 13:53 UTC
    | M 5.4 |
    113.4 km (70.5 mi) depth
    |
    138 km (86 mi) distance
    | USGS | Details
  • 14 May 1993 18:32 UTC
    | M 5.1 |
    33 km (20.5 mi) depth
    |
    121 km (75 mi) distance
    | USGS | Details
  • 03 May 1993 03:17 UTC
    | M 5.2 |
    33 km (20.5 mi) depth
    |
    24 km (15 mi) distance
    | USGS | Details
  • 02 May 1993 11:26 UTC
    | M 6.4 |
    12.9 km (8 mi) depth
    |
    64 km (40 mi) distance
    | USGS | Strong mag. 6.4 earthquake - South Sandwich Islands Region on Sunday, 2 May 1993 at 11:26 (GMT)
  • 27 Apr 1993 13:04 UTC
    | M 5.5 |
    33 km (20.5 mi) depth
    |
    124 km (77 mi) distance
    | USGS | Details
  • 20 Mar 1993 09:20 UTC
    | M 6.3 |
    115.9 km (72 mi) depth
    |
    158 km (98 mi) distance
    | USGS | Strong mag. 6.3 earthquake - South Sandwich Islands Region on Saturday, 20 March 1993 at 09:20 (GMT)
  • 06 Feb 1993 12:42 UTC
    | M 5.7 |
    33 km (20.5 mi) depth
    |
    63 km (39 mi) distance
    | USGS | Details
  • Show all

Earlier earthquakes in the same area

Major magnitude. 7.2 earthquake - South Sandwich Islands Region on Friday, 27 December 1991 at 04:05 (GMT)
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