Very strong mag. 6.1 earthquake - Indian Ocean, 82 km south of Nias Island, North Sumatra, Indonesia, on Tuesday, 11 May 2004 at 08:28 (GMT)

Very strong mag. 6.1 earthquake - Indian Ocean, 82 km south of Nias Island, North Sumatra, Indonesia, on Tuesday, 11 May 2004 at 08:28 (GMT)

Very strong magnitude 6.1 earthquake at 21 km depth

1 Jan 00:00 UTC: First to report: USGS after 30 seconds.
Date & time: 11 May 2004 08:28:48 UTC
Magnitude: 6.1
Depth: 21.0 km
Epicenter latitude / longitude: 0.415°N / 97.825°E (Indian Ocean, Indonesia)
Nearest volcano: Sorikmarapi (193 km / 120 mi)
Nearby towns and cities:
182 km (113 mi) SW of Sibolga (pop: 79,700) --> See nearby quakes!
193 km (120 mi) SW of Padangsidempuan (pop: 100,600) --> See nearby quakes!
208 km (129 mi) S of Singkil (pop: 46,800) --> See nearby quakes!
280 km (174 mi) WNW of Pariaman (pop: 92,200) --> See nearby quakes!
292 km (181 mi) SW of Rantauprapat (pop: 103,000) --> See nearby quakes!
294 km (183 mi) WNW of Bukittinggi (pop: 98,700) --> See nearby quakes!
320 km (199 mi) WNW of Padang (pop: 840,400) --> See nearby quakes!
365 km (227 mi) SSW of Medan (pop: 1,751,000) --> See nearby quakes!
402 km (250 mi) W of Pekanbaru (pop: 704,000) --> See nearby quakes!
526 km (327 mi) SW of Kuala Lumpur (Malaysia) (pop: 1,454,000) --> 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.
Mag.DepthLocationSource
6.121 kmNias region, IndonesiaUSGS
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

More info
Recorded aftershocks, latest first (6 quakes):
  • 07 Oct 2004 04:51 UTC
    | M 4.3 |
    30 km (18.6 mi) depth
    |
    32 km (20 mi) distance
    | USGS | Details
  • 06 Oct 2004 08:27 UTC
    | M 4.4 |
    10 km (6.2 mi) depth
    |
    33 km (21 mi) distance
    | USGS | Details
  • 06 Oct 2004 06:47 UTC
    | M 4.7 |
    49.3 km (30.6 mi) depth
    |
    24 km (15 mi) distance
    | USGS | Details
  • 06 Oct 2004 01:49 UTC
    | M 5.1 |
    37.8 km (23.5 mi) depth
    |
    26 km (16 mi) distance
    | USGS | Details
  • 13 May 2004 07:18 UTC
    | M 4.5 |
    10 km (6.2 mi) depth
    |
    33 km (20 mi) distance
    | USGS | Details
  • 11 May 2004 09:22 UTC
    | M 4.5 |
    20 km (12.4 mi) depth
    |
    41 km (25 mi) distance
    | USGS | Details

Earlier earthquakes in the same area

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