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Strong mag. 6.5 earthquake - Southern Sumatra, Indonesia on Tuesday, 18 August 2020 - information

Very strong mag. 6.5 earthquake - Indian Ocean, 114 km west of Benkulu, Bengkulu, Indonesia, on Tuesday, August 18, 2020 at 22:24 GMT

This quake was likely a foreshock of the 6.6 quake Indian Ocean, 109 km west of Benkulu, Bengkulu, Indonesia, August 18, 2020 22:29 GMT, which followed after 5 minutes.
Very strong mag. 6.5 earthquake - Indian Ocean, 114 km west of Benkulu, Bengkulu, Indonesia, on Tuesday, August 18, 2020 at 22:24 GMT Very strong mag. 6.5 earthquake - Indian Ocean, 114 km west of Benkulu, Bengkulu, Indonesia, on Tuesday, August 18, 2020 at 22:24 GMT

Very strong magnitude 6.5 earthquake at 39 km depth

18 Aug 22:30 UTC: First to report: GFZ after 7 minutes.
Aug 18 22:31: Magnitude recalculated from 6.6 to 6.7.
Aug 18 22:36: Magnitude recalculated from 6.7 to 6.6.
Aug 18 22:47: Magnitude recalculated from 6.6 to 6.5.
Hypocenter depth recalculated from 10.0 to 39.0 km.

Earthquake details

Date & timeAug 18, 2020 22:24:03 UTC
Local time at epicenter
StatusConfirmed
Magnitude6.5
Depth39.0 km
Epicenter latitude / longitude4.18°S / 101.31°E (Indian Ocean, Indonesia)
Antipode4.18°N / 78.69°W
Shaking intensityModerate shaking
Felt12 reports
Primary data sourceGFZ (German Research Centre for Geosciences)
Nearest volcanoKaba (206 km / 128 mi)
Nearby towns and cities114 km (71 mi) WSW of Benkulu (pop: 309,700) | Show on map | Quakes nearby
156 km (97 mi) WSW of Churup (pop: 46,200) | Show on map | Quakes nearby
198 km (123 mi) WSW of Lubuklinggau (pop: 148,200) | Show on map | Quakes nearby
216 km (134 mi) W of Pagar Alam (pop: 70,400) | Show on map | Quakes nearby
236 km (147 mi) S of Sungai Penuh (pop: 95,900) | Show on map | Quakes nearby
252 km (156 mi) W of Lahat (pop: 65,900) | Show on map | Quakes nearby
278 km (173 mi) W of Tanjungagung (pop: 53,100) | Show on map | Quakes nearby
375 km (233 mi) SSE of Padang (pop: 840,400) | Show on map | Quakes nearby
406 km (253 mi) WSW of Palembang (pop: 1,441,500) | Show on map | Quakes nearby
654 km (406 mi) WNW of Jakarta (pop: 8,540,100) | Show on map | Quakes nearby
Estimated seismic energy released3.5 x 1014 joules (98.6 gigawatt hours, equivalent to 84802 tons of TNT or 5.3 atomic bombs!) | about seismic energy
Show interactive Map
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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
6.539 kmSouthern Sumatra, IndonesiaGFZ
6.810 kmSouthern Sumatra, IndonesiaEMSC
6.638 kmSouthern Sumatra, IndonesiaGeoAu
6.7112 kmSouthwest of Sumatra, IndonesiaBMKG
6.820 kmSouthern Sumatera, Indonesia [Sea: Indonesia]INGV
6.822 km139 km WSW of Bengkulu, IndonesiaUSGS

Seismograms

Seismic station: Chiang Mai, Thailand (CHTO/IU network) | Distance from quake: 2570 km / 1597 mi | Show on map | Station Info
Seismic station Chiang Mai, Thailand: vertical movement plot around time of quake (source: IRIS/BUD)
Seismogram (vertical component) around time of quake. Thin dotted red line indicates time of quake. Seismic waves arrive some time later, depending on distance. Source: IRIS Buffer of Uniform Data (BUD) webtool
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User reports for this quake (17)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Singapore (673 km NNE of epicenter) [Map] / Weak shaking (MMI III) : Felt tremors on the upper floors of an apartment in Singapore, hanging objects were swinging | 2 users found this interesting.  
Sungai Penuh, Jambi (236.7 km N of epicenter) [Map] / Weak shaking (MMI III) (reported through our app)
Singapore (677.6 km NNE of epicenter) [Map] / not felt
Ranau, Sabah (2040.2 km NE of epicenter) [Map] / not felt (reported through our app)
Bakaldalam, Bengkulu (157.9 km E of epicenter) [Map] / Strong shaking (MMI VI)
singapore (673.1 km NNE of epicenter) [Map] / Light shaking (MMI IV)
Rejang lebong, bengkulu (156.5 km ENE of epicenter) [Map] / Strong shaking (MMI VI) (reported through our app)
Padang (379.6 km NNW of epicenter) [Map] / Weak shaking (MMI III) (reported through our app)
27 km of Benkulu (125.9 km E of epicenter) [Map] / Weak shaking (MMI III) (reported through our app)
singapore / Weak shaking (MMI III) : Just some light shaking, though it was strong enough to move the doors and window panes back and forth ever so slightly. | One user found this interesting.  
Singapore / not felt : Ceiling lamps started swaying. A pot on a ledge fell over. | One user found this interesting.  
Marina del Rey, CA 90292 / not felt : Felt through ESP. thanks  
singapore / Very weak shaking (MMI II)
Singapore / Weak shaking (MMI III)
Singapore / Very weak shaking (MMI II)
Singapore / Very weak shaking (MMI II)
(Indonesia, 381 km NW of epicenter) : Terasa mengayun, tidak ada kerusakan di sekitar rumah (reported through EMSC)  

Earlier earthquakes in the same area

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