Strong mag. 6.1 earthquake - South Sandwich Islands Region on Saturday, 11 September 2004 at 21:52 (GMT)

Strong mag. 6.1 earthquake - South Sandwich Islands Region on Saturday, 11 September 2004 at 21:52 (GMT)

Strong magnitude 6.1 earthquake at 64 km depth

Date & time: 11 Sep 2004 21:52:38 UTC
Magnitude: 6.1
Depth: 63.9 km
Epicenter latitude / longitude: 57.976°S / 25.342°W (South Georgia & South Sandwich Islands)
Nearest volcano: Michael (69 km / 43 mi)
Nearby towns and cities:
76 km (47 mi) NE of Montagu Island --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 8.9 x 1013 joules (24.8 gigawatt hours, equivalent to 21301 tons of TNT or 1.3 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 6.164 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 6.1 quake South Sandwich Islands Region 11 September 2004 21:52 GMT

More info
Recorded aftershocks, latest first (9 quakes):
  • 07 Jan 2005 01:45 UTC
    | M 4.2 |
    69.2 km (43 mi) depth
    |
    8 km (5 mi) distance
    | USGS | Details
  • 22 Nov 2004 13:15 UTC
    | M 4.5 |
    72.5 km (45 mi) depth
    |
    9 km (6 mi) distance
    | USGS | Details
  • 09 Nov 2004 22:30 UTC
    | M 4.2 |
    68 km (42.3 mi) depth
    |
    12 km (8 mi) distance
    | USGS | Details
  • 15 Oct 2004 01:58 UTC
    | M 3.9 |
    11.9 km (7.4 mi) depth
    |
    32 km (20 mi) distance
    | USGS | Details
  • 22 Sep 2004 15:43 UTC
    | M 4.6 |
    48.6 km (30.2 mi) depth
    |
    11 km (7 mi) distance
    | USGS | Details
  • 13 Sep 2004 04:48 UTC
    | M 4.8 |
    60.9 km (37.8 mi) depth
    |
    19 km (12 mi) distance
    | USGS | Details
  • 12 Sep 2004 17:05 UTC
    | M 4.5 |
    40.6 km (25.2 mi) depth
    |
    35 km (22 mi) distance
    | USGS | Details
  • 12 Sep 2004 17:03 UTC
    | M 4.3 |
    62.4 km (38.8 mi) depth
    |
    31 km (20 mi) distance
    | USGS | Details
  • 12 Sep 2004 10:38 UTC
    | M 4.6 |
    34.7 km (21.6 mi) depth
    |
    24 km (15 mi) distance
    | USGS | Details

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Earlier earthquakes in the same area

Strong mag. 6.1 earthquake - South Sandwich Islands Region on Saturday, 11 September 2004 at 21:52 (GMT)
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