Moderate mag. 5.6 earthquake - Indian Ocean, 114 km northwest of Sinabang, Kabupaten Simeulue, Aceh, Indonesia, on Wednesday, Sep 15, 2021 3:13 am (GMT +7) -

Moderate mag. 5.6 earthquake - Indian Ocean, 114 km northwest of Sinabang, Kabupaten Simeulue, Aceh, Indonesia, on Wednesday, Sep 15, 2021 3:13 am (GMT +7)

Moderate magnitude 5.6 earthquake at 48 km depth

14 Sep 20:21 UTC: First to report: GFZ after 8 minutes.
14 Sep 20:24: Magnitude recalculated from 5.3 to 5.4. Epicenter location corrected by 21 km (13 mi) towards WSW.
... [show all] ...
14 Sep 21:10: Hypocenter depth recalculated from 34.0 to 48.0 km (from 21 to 30 mi). Epicenter location corrected by 17 km (10.4 mi) towards E.
Update Tue, 14 Sep 2021, 20:27
Significant magnitude 5.4 quake hits 130 km northwest of Sinabang, Indonesia early morning
5.4 quake 15 Sep 3:13 am (GMT +7)
5.4 quake 15 Sep 3:13 am (GMT +7)
An earthquake of magnitude 5.4 occurred early morning on Wednesday, September 15th, 2021, at 3:13 am local time near Sinabang, Kabupaten Simeulue, Aceh, Indonesia, as reported by Indonesia's Meteorology, Climatology, and Geophysical Agency.
According to preliminary data, the quake was located at a shallow depth of 10 km. Shallow earthquakes are felt more strongly than deeper ones as they are closer to the surface. The exact magnitude, epicenter, and depth of the quake might be revised within the next few hours or minutes as seismologists review data and refine their calculations, or as other agencies issue their report.
A second report was later issued by the German Research Centre for Geosciences (GFZ), which listed it as a magnitude 5.4 earthquake as well. A third agency, the European-Mediterranean Seismological Centre (EMSC), reported the same quake at magnitude 5.4.
Based on the preliminary seismic data, the quake should not have caused any significant damage, but was probably felt by many people as light vibration in the area of the epicenter.
Weak shaking might have been felt in Sinabang (pop. 15,000) located 130 km from the epicenter.
VolcanoDiscovery will automatically update magnitude and depth if these change and follow up if other significant news about the quake become available. If you're in the area, please send us your experience through our reporting mechanism, either online or via our mobile app. This will help us provide more first-hand updates to anyone around the globe who wants to know more about this quake.
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Earthquake data

Date & time: Sep 14, 2021 20:13:57 UTC -
Local time at epicenter: Wednesday, Sep 15, 2021 3:13 am (GMT +7)
Magnitude: 5.6
Depth: 48.0 km
Epicenter latitude / longitude: 2.91°N / 95.45°E (Indian Ocean, Indonesia)
Antipode: 2.91°S / 84.55°W
Nearest volcano: Peuet Sague (223 km / 139 mi)
Nearby towns and cities:
114 km (71 mi) WNW of Sinabang (Kabupaten Simeulue) (pop: 15,000) --> See nearby quakes!
156 km (97 mi) SSW of Meulaboh (Kabupaten Aceh Barat) (pop: 35,100) --> See nearby quakes!
269 km (167 mi) WNW of Singkil (pop: 46,800) --> See nearby quakes!
273 km (169 mi) SSW of Reuleuet (pop: 40,400) --> See nearby quakes!
293 km (182 mi) S of Banda Aceh (pop: 250,800) --> See nearby quakes!
315 km (196 mi) SW of Lhokseumawe (pop: 89,000) --> See nearby quakes!
346 km (215 mi) WSW of Binjai (pop: 228,800) --> See nearby quakes!
359 km (223 mi) WSW of Sunggal (pop: 157,900) --> See nearby quakes!
365 km (227 mi) WSW of metan (pop: 1,751,000) --> See nearby quakes!
387 km (241 mi) WSW of Percut (pop: 311,100) --> See nearby quakes!
312 km (194 mi) NW of Nias Island (pop: 756,300) --> See nearby quakes!
Weather at epicenter at time of quake:
Overcast Clouds 27.9°C (82 F), humidity: 71%, wind: 2 m/s (3 kts) from S
Primary data source: BMKG (Meteorological, Climatological, and Geophysical Agency of Indonesia)
Estimated released energy: 1.6 x 1013 joules (4.4 gigawatt hours, equivalent to 3788 tons of TNT or 0.2 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.
5.648 kmIndonesia: Off West Coast of Northern SumatraBMKG
5.324 kmIndonesia: Off West Coast of Northern SumatraGFZ
5.310 kmIndonesia: Near MedanRENASS
5.315 km122 Km WNW of Sinabang, IndonesiaUSGS
5.332 kmIndonesia: Off West Coast of Northern SumatraGeoAu

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 (1 quake)

  • 22 Sep 2021 17:30 UTC
    | M 4.5 |
    10 km (6.2 mi) depth
    21 km (13 mi) distance
    | BMKG | Details

Earlier earthquakes in the same area

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