Moderate mag. 5.1 earthquake - Indian Ocean, 108 km south of Nias Island, North Sumatra, Indonesia, on Wednesday, 6 October 2004 at 01:49 (GMT)

Moderate mag. 5.1 earthquake - Indian Ocean, 108 km south of Nias Island, North Sumatra, Indonesia, on Wednesday, 6 October 2004 at 01:49 (GMT)

Moderate magnitude 5.1 earthquake at 38 km depth

1 Jan 00:00 UTC: First to report: USGS after 30 seconds.
Date & time: 6 Oct 2004 01:49:01 UTC
Magnitude: 5.1
Depth: 37.8 km
Epicenter latitude / longitude: 0.194°N / 97.913°E (Indian Ocean, Indonesia)
Nearest volcano: Sorikmarapi (189 km / 117 mi)
Nearby towns and cities:
197 km (123 mi) SSW of Sibolga (pop: 79,700) --> See nearby quakes!
201 km (125 mi) SW of Padangsidempuan (pop: 100,600) --> See nearby quakes!
233 km (145 mi) S of Singkil (pop: 46,800) --> See nearby quakes!
262 km (163 mi) WNW of Pariaman (pop: 92,200) --> See nearby quakes!
279 km (173 mi) W of Bukittinggi (pop: 98,700) --> See nearby quakes!
300 km (186 mi) WNW of Padang (pop: 840,400) --> See nearby quakes!
301 km (187 mi) SW of Rantauprapat (pop: 103,000) --> See nearby quakes!
306 km (190 mi) W of Payakumbuh (pop: 121,600) --> See nearby quakes!
386 km (240 mi) SSW of Medan (pop: 1,751,000) --> See nearby quakes!
532 km (331 mi) SW of Kuala Lumpur (Malaysia) (pop: 1,454,000) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 2.8 x 1012 joules (783 megawatt hours, equivalent to 674 tons of TNT) 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.
5.138 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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More info
Recorded aftershocks, latest first (3 quakes):
  • 07 Oct 2004 04:51 UTC
    | M 4.3 |
    30 km (18.6 mi) depth
    15 km (10 mi) distance
    | USGS | Details
  • 06 Oct 2004 08:27 UTC
    | M 4.4 |
    10 km (6.2 mi) depth
    16 km (10 mi) distance
    | USGS | Details
  • 06 Oct 2004 06:47 UTC
    | M 4.7 |
    49.3 km (30.6 mi) depth
    9 km (6 mi) distance
    | USGS | Details

Earlier earthquakes in the same area

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