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Strong mag. 6.9 earthquake - Banda Sea (Indonesia) on Friday, 21 August 2020 - information

Strong mag. 6.9 earthquake - Banda Sea, 218 km southeast of Katabu, Southeast Sulawesi, Indonesia, on Friday, August 21, 2020 at 04:09 GMT

Strong mag. 6.9 earthquake - Banda Sea, 218 km southeast of Katabu, Southeast Sulawesi, Indonesia, on Friday, August 21, 2020 at 04:09 GMT Strong mag. 6.9 earthquake - Banda Sea, 218 km southeast of Katabu, Southeast Sulawesi, Indonesia, on Friday, August 21, 2020 at 04:09 GMT

Strong magnitude 6.9 earthquake at 632 km depth

21 Aug 04:15 UTC: First to report: GFZ after 5 minutes.
Hypocenter depth recalculated from 652.0 to 649.0 km.
Hypocenter depth recalculated from 649.0 to 650.0 km.
Aug 21 04:22: Magnitude recalculated from 6.6 to 6.5.
Hypocenter depth recalculated from 650.0 to 630.0 km.
Aug 21 05:14: Magnitude recalculated from 6.5 to 6.9.
Hypocenter depth recalculated from 630.0 to 632.0 km.
Update Fri, 21 Aug 2020, 13:09

Strong but very deep magnitude 6.9 earthquake beneath Indonesia

A very strong, but also extremely deep (630 km) magnitude 6.9 quake occurred this morning under Indonesia's Banda Sea.
Due to its great depth, it posed no danger on the surface, where it was felt as a very mild shaking over most of Indonesia and adjacent areas including parts of northern Australia.

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Earthquake details

Date & timeAug 21, 2020 04:09:52 UTC
Local time at epicenter
StatusConfirmed
Magnitude6.9
Depth632.0 km
Epicenter latitude / longitude6.64°S / 123.49°E (Banda Sea, Indonesia)
Antipode6.64°N / 56.51°W
Shaking intensityWeak shaking
Felt14 reports
Primary data sourceGFZ (German Research Centre for Geosciences)
Nearest volcanoEmperor of China (96 km / 60 mi)
Nearby towns and cities218 km (136 mi) SSE of Katabu (pop: 42,800) | Show on map | Quakes nearby
261 km (162 mi) NNE of Maumere (pop: 47,600) | Show on map | Quakes nearby
314 km (195 mi) NW of Delhi (Timor-Leste) (pop: 150,000) | Show on map | Quakes nearby
315 km (196 mi) NNW of Atambua (Kabupaten Belu) (pop: 35,800) | Show on map | Quakes nearby
315 km (196 mi) SSE of Kendari (pop: 195,000) | Show on map | Quakes nearby
317 km (197 mi) NE of Ende (pop: 77,200) | Show on map | Quakes nearby
331 km (205 mi) NNW of Kefamenanu (Kabupaten Timor Tengah Utara) (pop: 29,500) | Show on map | Quakes nearby
393 km (244 mi) N of Kupang (pop: 282,400) | Show on map | Quakes nearby
421 km (262 mi) ESE of Watampone (pop: 81,600) | Show on map | Quakes nearby
448 km (278 mi) ENE of Labuan Bajo (pop: 188,700) | Show on map | Quakes nearby
207 km (129 mi) NNW of Pura Island (pop: 5,350) | Show on map | Quakes nearby
341 km (212 mi) NE of Flores Island (pop: 1,831,000) | Show on map | Quakes nearby
369 km (229 mi) NW of Timor Island (pop: 3,182,700) | Show on map | Quakes nearby
Estimated seismic energy released1.4 x 1015 joules (392 gigawatt hours, equivalent to 3.4 x 105 tons of TNT or 21.1 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
6.9632 kmBanda Sea (Indonesia)GFZ
6.9643 kmBanda Sea (Indonesia)EMSC
6.7663 kmBanda Sea (Indonesia)BMKG
6.9627 kmBanda Sea (Indonesia)GeoAu
6.5640 kmIndonesia [Sea]INGV
6.9627 km220 km SSE of Katabu, IndonesiaUSGS

Seismograms

Seismic station: Davao, Philippines (DAV/IU network) | Distance from quake: 1542 km / 958 mi | Show on map | Station Info
Seismic station Davao, Philippines: 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.
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PA USA (15847 km NNE of epicenter) [Map] / Very weak shaking (MMI II) : Went to sleep at 10 p.m.EST. in an upstairs bedroom. I fell deeply asleep after a long day for a few hours, when I felt a very deep but significant shaking that lasted for a short time. In my mind I knew it was a significant earthquake though I didn't rou  
Near Young (3998.4 km SE of epicenter) [Map] / not felt
Kuta, Kabupaten Badung, Bali (947.2 km WSW of epicenter) [Map] / Very weak shaking (MMI II) (reported through our app)
near Ranau, Sabah (1600.2 km NNW of epicenter) [Map] / not felt (reported through our app)
Darwin Australia (1033.8 km SE of epicenter) [Map] / Weak shaking (MMI III) (reported through our app)
Bandar Seri Begawan, Brunei (1599.7 km NW of epicenter) [Map] / Very weak shaking (MMI II)
Brunei, Brunei-Muara District (1599.6 km NW of epicenter) [Map] / Very weak shaking (MMI II)
near Praya, ID.17.Lombok (undefined), West Nusa Tenggara (833.7 km WSW of epicenter) [Map] / Very weak shaking (MMI II) (reported through our app)
Mataram-Lombok, ID.17.Lombok (undefined), West Nusa Tenggara (840.7 km WSW of epicenter) [Map] / Very weak shaking (MMI II) (reported through our app)
Kakas / Weak shaking (MMI III) : I feel from Minahasa, North Sulawesi | 2 users found this interesting.  
Bandung / not felt
Kolkata / not felt
Brunei / not felt
Dili, Timor-Leste / Light shaking (MMI IV)
Dundee Downs Northern Territory / Very weak shaking (MMI II) : Bedroom door rattled and very slight shaking felt in bed  
Darwin / Very weak shaking (MMI II)
Dili / not felt
Kuta, Bali, Indonesia / Light shaking (MMI IV)
sunset road / jl. Dewi sri - Bali / Light shaking (MMI IV)
Darwin Australia / Weak shaking (MMI III)
(Indonesia, 934 km W of epicenter) : Gentle swaying of chair but no shakjng. Less than about 40 seconds | 4 users found this interesting. (reported through EMSC)  
Tindal (Australia, 1303 km SE of epicenter) : Only felt it because I was sitting still. Very mild movement. Tindal NT Australia | 3 users found this interesting. (reported through EMSC)  
Katherine South (Australia, 1289 km SE of epicenter) : Sitting and Still felt vibration like someone beside me farted. There wasn’t a smell and other people felt it but not smelt it, so we put it down to an earth quake. | 2 users found this interesting. (reported through EMSC)  
  • It smelled. Trust me there was a smell.
Dili (Timor Leste, 310 km SE of epicenter) : Boards and fittings swayed...chairs were rocking. Intensity could be around 4. | 2 users found this interesting. (reported through EMSC)  
Dili (Timor Leste, 310 km SE of epicenter) : Was in food court and the whole building shook for about 1 second. | 2 users found this interesting. (reported through EMSC)  
Dili (Timor-Leste, 310 km SE of epicenter) : Those in higher building evacuated down | 2 users found this interesting. (reported through EMSC)  
Kota Kinabalu (Malaysia, 1624 km NW of epicenter) : Felt it when siting siting quietly. How is that possible? I'm from Kota Kinabalu Sabah | One user found this interesting. (reported through EMSC)  
  • The quake was very strong. Thank you for your report
Legian (Indonesia, 945 km W of epicenter) : Kura Bali | One user found this interesting. (reported through EMSC)  
Banjar Medura (Indonesia, 936 km W of epicenter) : Качнуло | One user found this interesting. (reported through EMSC)  
Dili (Timor Leste, 310 km SE of epicenter) : It wasn't very strong, but it lasted a while. (reported through EMSC)  
Dili (Timor Leste, 310 km SE of epicenter) : Felt the chair move, 2 short shakes (reported through EMSC)  
  • It was a very strong earthquake at 6.9
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Aftershocks

[More info]

Recorded aftershocks, latest first (42 quakes)

Date and timeMag
Depth
LocationDetails
Feb 6, 2021 01:18
1 year 44 weeks ago
3.9

23 km
Banda Sea, 250 km NE of Maumere, East Nusa Tenggara, IndonesiaMore
Jan 30, 2021 07:48
1 year 45 weeks ago
3.9

17 km
Banda Sea, 173 km S of Katabu, Southeast Sulawesi, IndonesiaMore
Jan 26, 2021 16:04
1 year 45 weeks ago
3.3

33 km
Banda Sea, 165 km N of Maumere, East Nusa Tenggara, IndonesiaMore
Jan 25, 2021 12:08
1 year 46 weeks ago
3.9

421 km
Banda Sea, 177 km S of Katabu, Southeast Sulawesi, IndonesiaMore
Jan 3, 2021 02:08
1 year 49 weeks ago
3.7

206 km
Banda Sea, 211 km N of Atambua, Kabupaten Belu, East Nusa Tenggara, IndonesiaMore
Jan 2, 2021 18:34
1 year 49 weeks ago
3.9

15 km
Banda Sea, 165 km N of Maumere, East Nusa Tenggara, IndonesiaMore
Dec 4, 2020 05:26
2 years ago
4.4

315 km
Banda Sea, 210 km NE of Maumere, East Nusa Tenggara, IndonesiaMore
Dec 3, 2020 21:50
2 years ago
2.9

231 km
Banda Sea, 145 km NW of Atambua, Kabupaten Belu, East Nusa Tenggara, IndonesiaMore
Nov 27, 2020 05:49
2 years ago
3.8

10 km
Banda Sea, 93 km S of Katabu, Southeast Sulawesi, IndonesiaMore
Nov 18, 2020 19:07
2 years ago
4.3

16 km
Banda Sea, 116 km S of Katabu, Southeast Sulawesi, IndonesiaMore
Nov 8, 2020 21:42
2 years ago
4.4

10 km
Banda Sea, 119 km S of Katabu, Southeast Sulawesi, IndonesiaMore
Nov 8, 2020 21:23
2 years ago
3.6

21 km
Banda Sea, 117 km S of Katabu, Southeast Sulawesi, IndonesiaMore
Nov 5, 2020 17:21
2 years ago
4.3

589 km
Banda Sea, 233 km NW of Atambua, Kabupaten Belu, East Nusa Tenggara, IndonesiaMore
Nov 3, 2020 22:51
2 years ago
4.4

10 km
Banda Sea, 127 km S of Katabu, Southeast Sulawesi, IndonesiaMore
Nov 3, 2020 22:51
2 years ago
3.4

10 km
Banda Sea, 128 km S of Katabu, Southeast Sulawesi, IndonesiaMore
Nov 3, 2020 22:00
2 years ago
3.3

17 km
Banda Sea, 117 km S of Katabu, Southeast Sulawesi, IndonesiaMore
Nov 3, 2020 20:40
2 years ago
4.2

10 km
Banda Sea, 128 km S of Katabu, Southeast Sulawesi, IndonesiaMore
Nov 3, 2020 20:40
2 years ago
3.3

10 km
Banda Sea, 128 km S of Katabu, Southeast Sulawesi, IndonesiaMore
Oct 29, 2020 19:02
2 years ago
3.4

10 km
Banda Sea, 124 km S of Katabu, Southeast Sulawesi, IndonesiaMore
Oct 27, 2020 09:01
2 years ago
3.8

242 km
Banda Sea, 211 km NE of Maumere, East Nusa Tenggara, IndonesiaMore
Oct 24, 2020 23:02
2 years ago
3.4

10 km
Banda Sea, 129 km S of Katabu, Southeast Sulawesi, IndonesiaMore
Oct 18, 2020 14:38
2 years ago
4.4

241 km
Banda Sea, 168 km NE of Maumere, East Nusa Tenggara, IndonesiaMore
Oct 18, 2020 04:29
2 years ago
3.5

11 km
Banda Sea, 118 km S of Katabu, Southeast Sulawesi, IndonesiaMore
Oct 17, 2020 20:58
2 years ago
4.4

10 km
Banda Sea, 126 km S of Katabu, Southeast Sulawesi, IndonesiaMore
Oct 15, 2020 08:10
2 years ago
3.4

24 km
Banda Sea, 115 km S of Katabu, Southeast Sulawesi, IndonesiaMore
Oct 14, 2020 04:33
2 years ago
2.8

10 km
Banda Sea, 154 km E of Maumere, East Nusa Tenggara, IndonesiaMore
Oct 10, 2020 17:32
2 years ago
3.3

10 km
Banda Sea, 134 km S of Katabu, Southeast Sulawesi, IndonesiaMore
Oct 10, 2020 09:08
2 years ago
4.7

11 km
Banda Sea, 120 km S of Katabu, Southeast Sulawesi, IndonesiaMore
Oct 9, 2020 06:29
2 years ago
4.0

10 km
Banda Sea, 125 km S of Katabu, Southeast Sulawesi, IndonesiaMore
Oct 9, 2020 02:57
2 years ago
5.3

10 km
Banda Sea, 116 km S of Katabu, Southeast Sulawesi, IndonesiaMore
Oct 1, 2020 19:06
2 years ago
4.4

211 km
Banda Sea, 122 km NE of Maumere, East Nusa Tenggara, IndonesiaMore
Sep 22, 2020 22:57
2 years ago
3.8

647 km
Banda Sea, 173 km NE of Maumere, East Nusa Tenggara, IndonesiaMore
Sep 22, 2020 22:57
2 years ago
4.5

647 km
Banda Sea, 173 km NE of Maumere, East Nusa Tenggara, IndonesiaMore
Sep 15, 2020 11:55
2 years ago
3.9

169 km
Banda Sea, 174 km NW of Atambua, Kabupaten Belu, East Nusa Tenggara, IndonesiaMore
Sep 9, 2020 10:32
2 years ago
3.9

246 km
Banda Sea, 177 km NE of Maumere, East Nusa Tenggara, IndonesiaMore
Sep 8, 2020 18:57
2 years ago
3.6

143 km
Banda Sea, 166 km NW of Atambua, Kabupaten Belu, East Nusa Tenggara, IndonesiaMore
Sep 2, 2020 15:59
2 years ago
4.0

179 km
Banda Sea, 149 km NW of Atambua, Kabupaten Belu, East Nusa Tenggara, IndonesiaMore
Sep 1, 2020 21:05
2 years ago
3.9

238 km
Banda Sea, 116 km NE of Maumere, East Nusa Tenggara, IndonesiaMore
Aug 30, 2020 18:16
2 years ago
4.0

10 km
Banda Sea, 103 km NE of Maumere, East Nusa Tenggara, IndonesiaMore
Aug 21, 2020 10:47
2 years ago
4.0

662 km
Banda Sea, 223 km NE of Maumere, East Nusa Tenggara, IndonesiaMore
Aug 21, 2020 09:17
2 years ago
4.3

650 km
Banda Sea, 243 km NE of Maumere, East Nusa Tenggara, IndonesiaMore
Aug 21, 2020 04:42
2 years ago
5.0

644 km
Banda Sea, 243 km NE of Maumere, East Nusa Tenggara, IndonesiaMore

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