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Strong mag. 6.6 earthquake - Southern Sumatra, Indonesia on Tuesday, 18 August 2020 - information

Very strong mag. 6.6 earthquake - Indian Ocean, 109 km west of Benkulu, Bengkulu, Indonesia, on Tuesday, August 18, 2020 at 22:29 GMT

Very strong mag. 6.6 earthquake - Indian Ocean, 109 km west of Benkulu, Bengkulu, Indonesia, on Tuesday, August 18, 2020 at 22:29 GMT Very strong mag. 6.6 earthquake - Indian Ocean, 109 km west of Benkulu, Bengkulu, Indonesia, on Tuesday, August 18, 2020 at 22:29 GMT

Very strong magnitude 6.6 earthquake at 40 km depth

18 Aug 22:37 UTC: First to report: GFZ after 8 minutes.
Aug 18 22:39: Magnitude recalculated from 6.8 to 7.1.
Hypocenter depth recalculated from 58.0 to 10.0 km.
Aug 18 22:41: Magnitude recalculated from 7.1 to 7.0.
Aug 18 23:05: Magnitude recalculated from 7.0 to 6.6.
Hypocenter depth recalculated from 10.0 to 40.0 km.
Update Tue, 18 Aug 2020, 23:34
Today's quakes occurred in almost the same area as the massive magnitude 8.4 quake, which had occurred on 12 Sep 2007. In fact, they likely still represent late aftershocks of it.
Update Tue, 18 Aug 2020, 23:23

Magnitude recalculated to 6.6

It appears that the quake was "only" a 6.6 event. This is significantly weaker than a magnitude 7.0, after more detailed calculations have been possible in the 50 minutes since the quake occurred.
While the difference between 6.6 and 7.0 might seem small, due to the logarithmic scale, a magnitude 7 is 4 times stronger than a magnitude 6.6 quake, so the difference is very significant.
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Earthquake details

Date & timeAug 18, 2020 22:29:27 UTC
Local time at epicenter
StatusConfirmed
Magnitude6.6
Depth40.0 km
Epicenter latitude / longitude4.12°S / 101.34°E (Indian Ocean, Indonesia)
Antipode4.12°N / 78.66°W
Shaking intensityLight shaking
Felt18 reports
Primary data sourceGFZ (German Research Centre for Geosciences)
Nearest volcanoKaba (171 km / 106 mi)
Nearby towns and cities109 km (68 mi) WSW of Benkulu (pop: 309,700) | Show on map | Quakes nearby
150 km (93 mi) WSW of Churup (pop: 46,200) | Show on map | Quakes nearby
192 km (119 mi) WSW of Lubuklinggau (pop: 148,200) | Show on map | Quakes nearby
212 km (132 mi) W of Pagar Alam (pop: 70,400) | Show on map | Quakes nearby
230 km (143 mi) S of Sungai Penuh (pop: 95,900) | Show on map | Quakes nearby
247 km (154 mi) W of Lahat (pop: 65,900) | Show on map | Quakes nearby
274 km (170 mi) W of Tanjungagung (pop: 53,100) | Show on map | Quakes nearby
369 km (229 mi) SSE of Padang (pop: 840,400) | Show on map | Quakes nearby
401 km (249 mi) WSW of Palembang (pop: 1,441,500) | Show on map | Quakes nearby
653 km (406 mi) WNW of Jakarta (pop: 8,540,100) | Show on map | Quakes nearby
Estimated seismic energy released5 x 1014 joules (139 gigawatt hours, equivalent to 1.2 x 105 tons of TNT or 7.5 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
6.640 kmSouthern Sumatra, IndonesiaGFZ
6.810 kmSouthern Sumatra, IndonesiaEMSC
7.123 kmSouthwest of Sumatra, IndonesiaBMKG
6.844 kmSouthern Sumatra, IndonesiaGeoAu
7.193 kmSouthern Sumatera, Indonesia [Sea: Indonesia]INGV
6.926 km126 km WSW of Bengkulu, IndonesiaUSGS

Seismograms

Seismic station: Chiang Mai, Thailand (CHTO/IU network) | Distance from quake: 2564 km / 1593 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 (37)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Contribute:
Leave a comment if you find a particular report interesting or want to add to it.
Flag as inappropriate.
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Jalan Berseh, Singapore (665.3 km NNE of epicenter) [Map] / Weak shaking (MMI III) : Was sitting on the floor when I | 6 users found this interesting.  
Cileungsi, Bogor, Jawa Barat (674.8 km ESE of epicenter) [Map] / Very weak shaking (MMI II) : I felt like something just shaking me. I was in sleep at the time. I just wake up when I feel something shaking me a little bit (reported through our app)  
Singapore, SG.01 (667.8 km NNE of epicenter) [Map] / Very weak shaking (MMI II) : Very weak and faint sway. Felt on Seating position. Level 12 | 2 users found this interesting.  
Male', Maldives (3226.8 km WNW of epicenter) [Map] / Very weak shaking (MMI II) : Felt the bed shaking while resting. Was not sure it was an earthquake until I saw the news | One user found this interesting.  
Bandon, West Java (763.3 km ESE of epicenter) [Map] / not felt
49 km of Baturaja, South Sumatra (349.8 km E of epicenter) [Map] / not felt
Caranan, Province of Camarines Sur, Bicol (3093.5 km NE of epicenter) [Map] / Weak shaking (MMI III) : Light shaking and no damage (reported through our app)  
Jakarta (666.6 km ESE of epicenter) [Map] / not felt (reported through our app)
Bekasi (666.6 km ESE of epicenter) [Map] / not felt (reported through our app)
Jakarta (656.2 km ESE of epicenter) [Map] / not felt
Sungai Penuh, Jambi (229.9 km N of epicenter) [Map] / Weak shaking (MMI III) (reported through our app)
Pelalawan Kerinci (509.4 km N of epicenter) [Map] / not felt : did not fell either earthquake. I am glad it was in 2 steps and not 1.  
Tasman Sea (8023.1 km SE of epicenter) [Map] / Very weak shaking (MMI II)
Marina Del Rey, CA, USA (14737.3 km NE of epicenter) [Map] / Very weak shaking (MMI II) : I felt mild shaking as I was trying to take a nap.  
unspecified (13142.5 km NNE of epicenter) [Map] / not felt
near Ranau, Sabah (2031.3 km NE of epicenter) [Map] / not felt (reported through our app)
Montesano (13601.8 km NE of epicenter) [Map] / not felt
Benkulu (111.5 km ENE of epicenter) [Map] / Light shaking (MMI IV)
Padang, West Sumatra (369.5 km NNW of epicenter) [Map] / Weak shaking (MMI III) (reported through our app)
Kuta, Kabupaten Badung, Bali (1611.8 km ESE of epicenter) [Map] / not felt
Singapore / Light shaking (MMI IV) : on the 13th floor of an apartment building, near Southern coast. Felt whole building swaying for a good 10seconds | 3 users found this interesting.  
Singapore / Light shaking (MMI IV) : Fans moved quite a bit. I felt myself shake in my chair. | One user found this interesting.  
Maldives / Very weak shaking (MMI II) : Bed was shaking | One user found this interesting.  
The body shop / Violent shaking (MMI IX) : ££££££  
Tangerang / not felt
Longbeach / not felt
Singapore / Weak shaking (MMI III)
Kuta lombok / not felt
Bogor / not felt
Madiun, East Java, Indonesia / not felt : My location is about 1,350 km ESE of the quake. I did not feel it, though I was asleep at the time.  
Singapore / Light shaking (MMI IV)
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Aftershocks

[More info]

Recorded aftershocks, latest first (67 quakes)

Date and timeMag
Depth
LocationDetails
Feb 5, 2021 09:07
1 year 44 weeks ago
4.9

48 km
Indian Ocean, 77 km S of Benkulu, Bengkulu, IndonesiaMore
Feb 1, 2021 09:09
1 year 45 weeks ago
3.3

54 km
76 km NW of Benkulu, Bengkulu, IndonesiaMore
Jan 23, 2021 14:06
1 year 46 weeks ago
3.8

54 km
33 km NW of Benkulu, Bengkulu, IndonesiaMore
Jan 13, 2021 06:18
1 year 47 weeks ago
4.7

27 km
Indian Ocean, 51 km S of Benkulu, Bengkulu, IndonesiaMore
Jan 3, 2021 21:56
1 year 49 weeks ago
3.1

13 km
Indian Ocean, 94 km W of Benkulu, Bengkulu, IndonesiaMore
Dec 31, 2020 21:05
1 year 49 weeks ago
2.6

60 km
22 km S of Benkulu, Bengkulu, IndonesiaMore
Dec 25, 2020 23:06
1 year 50 weeks ago
3.2

47 km
Indian Ocean, 81 km S of Benkulu, Bengkulu, IndonesiaMore
Dec 23, 2020 22:27
1 year 50 weeks ago
4.1

10 km
Indian Ocean, 147 km SW of Benkulu, Bengkulu, IndonesiaMore
Dec 23, 2020 22:19
1 year 50 weeks ago
4.9

24 km
Indian Ocean, 154 km SW of Benkulu, Bengkulu, IndonesiaMore
Dec 22, 2020 14:00
1 year 50 weeks ago
4.6

10 km
Indian Ocean, 156 km SW of Benkulu, Bengkulu, IndonesiaMore
Dec 21, 2020 06:32
1 year 51 weeks ago
3.6

17 km
Indian Ocean, 78 km W of Benkulu, Bengkulu, IndonesiaMore
Dec 18, 2020 05:20
1 year 51 weeks ago
3.7

18 km
52 km S of Benkulu, Bengkulu, IndonesiaMore
Dec 14, 2020 08:12
1 year 52 weeks ago
4.1

10 km
Indian Ocean, 85 km SW of Benkulu, Bengkulu, IndonesiaMore
Dec 5, 2020 02:23
2 years ago
3.1

10 km
Indian Ocean, 150 km W of Benkulu, Bengkulu, IndonesiaMore
Dec 4, 2020 21:52
2 years ago
4.3

25 km
Indian Ocean, 53 km S of Benkulu, Bengkulu, IndonesiaMore
Dec 4, 2020 11:01
2 years ago
3.4

20 km
Indian Ocean, 77 km S of Benkulu, Bengkulu, IndonesiaMore
Dec 3, 2020 08:07
2 years ago
3.5

87 km
Indian Ocean, 75 km W of Benkulu, Bengkulu, IndonesiaMore
Dec 2, 2020 19:37
2 years ago
2.8

19 km
Indian Ocean, 117 km S of Sungai Penuh, Jambi, IndonesiaMore
Dec 1, 2020 21:21
2 years ago
3.5

34 km
Indian Ocean, 37 km S of Benkulu, Bengkulu, IndonesiaMore
Nov 29, 2020 22:08
2 years ago
3.0

31 km
Indian Ocean, 79 km S of Benkulu, Bengkulu, IndonesiaMore
Nov 26, 2020 18:33
2 years ago
3.7

21 km
Indian Ocean, 36 km NW of Benkulu, Bengkulu, IndonesiaMore
Nov 26, 2020 16:05
2 years ago
4.1

10 km
Indian Ocean, 145 km W of Benkulu, Bengkulu, IndonesiaMore
Nov 21, 2020 16:58
2 years ago
4.8

11 km
Indian Ocean, 55 km S of Benkulu, Bengkulu, IndonesiaMore
Nov 20, 2020 17:14
2 years ago
3.9

27 km
Indian Ocean, North Maluku, 62 km W of Benkulu, Bengkulu, IndonesiaMore
Nov 19, 2020 23:12
2 years ago
3.9

32 km
Indian Ocean, 86 km NW of Benkulu, Bengkulu, IndonesiaMore
Nov 7, 2020 18:12
2 years ago
2.8

16 km
Indian Ocean, 78 km W of Benkulu, Bengkulu, IndonesiaMore
Nov 2, 2020 15:37
2 years ago
3.8

21 km
Indian Ocean, 73 km S of Benkulu, Bengkulu, IndonesiaMore
Nov 2, 2020 08:10
2 years ago
3.8

34 km
12 km SE of Benkulu, Bengkulu, IndonesiaMore
Oct 28, 2020 23:15
2 years ago
2.9

73 km
26 km SE of Benkulu, Bengkulu, IndonesiaMore
Oct 28, 2020 23:15
2 years ago
3.5

10 km
Indian Ocean, 137 km SW of Benkulu, Bengkulu, IndonesiaMore
Oct 23, 2020 16:56
2 years ago
3.9

10 km
Indian Ocean, 146 km SW of Benkulu, Bengkulu, IndonesiaMore
Oct 19, 2020 18:08
2 years ago
3.0

39 km
Indian Ocean, 37 km S of Benkulu, Bengkulu, IndonesiaMore
Oct 15, 2020 13:50
2 years ago
3.4

36 km
88 km NW of Benkulu, Bengkulu, IndonesiaMore
Oct 14, 2020 08:10
2 years ago
3.3

34 km
Indian Ocean, 78 km NW of Benkulu, Bengkulu, IndonesiaMore
Oct 8, 2020 16:07
2 years ago
4.7

37 km
Indian Ocean, 79 km NW of Benkulu, Bengkulu, IndonesiaMore
Oct 5, 2020 18:21
2 years ago
4.4

15 km
Indian Ocean, 141 km W of Benkulu, Bengkulu, IndonesiaMore
Oct 3, 2020 16:10
2 years ago
3.2

25 km
Indian Ocean, 72 km S of Benkulu, Bengkulu, IndonesiaMore
Oct 1, 2020 20:24
2 years ago
3.2

90 km
46 km NW of Benkulu, Bengkulu, IndonesiaMore
Sep 28, 2020 01:17
2 years ago
4.3

23 km
Indian Ocean, 106 km NW of Benkulu, Bengkulu, IndonesiaMore
Sep 27, 2020 15:43
2 years ago
3.1

23 km
Indian Ocean, 116 km S of Sungai Penuh, Jambi, IndonesiaMore
Sep 26, 2020 08:37
2 years ago
3.6

10 km
Indian Ocean, 117 km W of Benkulu, Bengkulu, IndonesiaMore
Sep 25, 2020 06:42
2 years ago
3.1

19 km
Indian Ocean, 117 km S of Sungai Penuh, Jambi, IndonesiaMore
Sep 24, 2020 10:11
2 years ago
3.1

34 km
Indian Ocean, 81 km NW of Benkulu, Bengkulu, IndonesiaMore
Sep 21, 2020 02:11
2 years ago
3.6

14 km
Indian Ocean, 140 km SW of Benkulu, Bengkulu, IndonesiaMore
Sep 20, 2020 02:59
2 years ago
4.2

106 km
Indian Ocean, 128 km S of Sungai Penuh, Jambi, IndonesiaMore
Sep 16, 2020 21:49
2 years ago
3.8

10 km
89 km S of Benkulu, Bengkulu, IndonesiaMore
Sep 12, 2020 03:09
2 years ago
3.5

26 km
Indian Ocean, 75 km W of Benkulu, Bengkulu, IndonesiaMore
Aug 29, 2020 05:35
2 years ago
4.9

10 km
Indian Ocean, 158 km SW of Benkulu, Bengkulu, IndonesiaMore
Aug 27, 2020 22:49
2 years ago
3.4

28 km
Indian Ocean, 64 km S of Benkulu, Bengkulu, IndonesiaMore
Aug 26, 2020 01:36
2 years ago
4.6

10 km
Indian Ocean, 144 km SW of Benkulu, Bengkulu, IndonesiaMore
Aug 24, 2020 11:45
2 years ago
4.2

14 km
Indian Ocean, 147 km W of Benkulu, Bengkulu, IndonesiaMore
Aug 24, 2020 10:24
2 years ago
4.9

25 km
Indian Ocean, 148 km W of Benkulu, Bengkulu, IndonesiaMore
Aug 22, 2020 19:42
2 years ago
3.8

10 km
Indian Ocean, 172 km W of Benkulu, Bengkulu, IndonesiaMore
Aug 22, 2020 03:17
2 years ago
4.8

42 km
Indian Ocean, 135 km W of Benkulu, Bengkulu, IndonesiaMore
Aug 22, 2020 00:39
2 years ago
5.4

29 km
Indian Ocean, 131 km W of Benkulu, Bengkulu, IndonesiaMore
Aug 21, 2020 19:01
2 years ago
4.2

10 km
Indian Ocean, 156 km SW of Benkulu, Bengkulu, IndonesiaMore
Aug 21, 2020 00:39
2 years ago
4.5

15 km
Indian Ocean, 182 km W of Benkulu, Bengkulu, IndonesiaMore
Aug 19, 2020 17:49
2 years ago
2.9

21 km
Indian Ocean, 64 km S of Benkulu, Bengkulu, IndonesiaMore
Aug 19, 2020 17:49
2 years ago
2.9

21 km
Indian Ocean, 64 km S of Benkulu, Bengkulu, IndonesiaMore
Aug 19, 2020 09:49
2 years ago
3.7

16 km
Indian Ocean, 118 km SW of Benkulu, Bengkulu, IndonesiaMore
Aug 19, 2020 09:49
2 years ago
3.6

16 km
Indian Ocean, 118 km SW of Benkulu, Bengkulu, IndonesiaMore
Aug 19, 2020 01:38
2 years ago
4.7

24 km
Indian Ocean, 148 km SW of Benkulu, Bengkulu, IndonesiaMore
Aug 19, 2020 01:37
2 years ago
4.6

10 km
Indian Ocean, 131 km SW of Benkulu, Bengkulu, IndonesiaMore
Aug 18, 2020 23:13
2 years ago
3.4

10 km
43 km NW of Benkulu, Bengkulu, IndonesiaMore
Aug 18, 2020 23:13
2 years ago
3.4

10 km
43 km NW of Benkulu, Bengkulu, IndonesiaMore
Aug 18, 2020 22:57
2 years ago
4.5

10 km
Indian Ocean, 138 km SW of Benkulu, Bengkulu, IndonesiaMore
Aug 18, 2020 22:57
2 years ago
4.5

10 km
Indian Ocean, 138 km SW of Benkulu, Bengkulu, IndonesiaMore
Show all

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