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Strong mag. 6.6 earthquake - Central Mid Atlantic Ridge on Sunday, 6 September 2020 - information

Major magnitude 6.6 earthquake - North Atlantic Ocean on Sunday, September 6, 2020 at 06:51 GMT

Major magnitude 6.6 earthquake - North Atlantic Ocean on Sunday, September 6, 2020 at 06:51 GMT Major magnitude 6.6 earthquake - North Atlantic Ocean on Sunday, September 6, 2020 at 06:51 GMT

Major magnitude 6.6 earthquake at 10 km depth

6 Sep 06:59 UTC: First to report: GFZ after 8 minutes.
Sep 6 07:00: Magnitude recalculated from 6.5 to 6.4.
Sep 6 07:37: Magnitude recalculated from 6.4 to 6.6.

Earthquake details

Date & timeSep 6, 2020 06:51:18 UTC
Local time at epicenter
StatusConfirmed
Magnitude6.6
Depth10.0 km
Epicenter latitude / longitude7.61°N / 37.16°W (international territory)
Antipode7.61°S / 142.84°E
Shaking intensityStrong shaking
Felt9 reports
Primary data sourceGFZ (German Research Centre for Geosciences)
Nearby towns and cities
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
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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
6.610 kmCentral Mid Atlantic RidgeGFZ
6.610 kmCentral Mid-atlantic RidgeEMSC
6.710 kmcentral Mid-Atlantic RidgeUSGS
6.710 kmCentral Mid Atlantic RidgeGeoAu
5.810 kmCentral Mid Atlantic RidgeBMKG
6.51.6 kmCentral Mid-Atlantic Ridge [Sea]INGV

Seismograms

Seismic station: Santiago Island, Cape Verde (SACV/II network) | Distance from quake: 1688 km / 1049 mi | Show on map | Station Info
Seismic station Santiago Island, Cape Verde: 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 (25)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Teresina/PI, Brasil (1543.4 km SSW of epicenter) [Map] / not felt : Earthquakes in this region are relatively common but there is no report of a tremor felt in Brazil. | 9 users found this interesting. (reported through our app)  
Boa Ventura PB (1676.1 km S of epicenter) [Map] / not felt : Não senti nada | 2 users found this interesting. (reported through our app)  
Siparia (2692.6 km W of epicenter) [Map] / not felt : Not felt | 2 users found this interesting.  
houghton regis (5949.9 km NNE of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / very short
Clarkton, North Carolina (5183.8 km NW of epicenter) [Map] / not felt
Warrington, Escambia, Florida (5793.5 km WNW of epicenter) [Map] / not felt
Rio de Janeiro, Ipanema. (3465.8 km S of epicenter) [Map] / not felt
near Starkville, Oktibbeha, Mississippi (6034.9 km NW of epicenter) [Map] / not felt
Marlton, New Jersey (5194.6 km NW of epicenter) [Map] / not felt : Did not feel a Thing  
Holly hill fl (5195.9 km WNW of epicenter) [Map] / not felt
near Natal, Rio Grande do Norte (1516.6 km S of epicenter) [Map] / Light shaking (MMI IV) (reported through our app)
Vigornia, Worcester, Massachusetts (5135.1 km NW of epicenter) [Map] / not felt : Did not feel it.  
Ananindeua (1594.1 km SW of epicenter) [Map] / not felt (reported through our app)
Tetuan, Tanger-Tetouan-Al Hoceima (4484.9 km NE of epicenter) [Map] / Weak shaking (MMI III)
Boa Ventura PB (1676.1 km S of epicenter) [Map] / Weak shaking (MMI III) (reported through our app)
Natal / Very weak shaking (MMI II) / rattling, vibrating : Estava dormindo, no 26° andar, e acordei com o corpo vibrando. Achei que era coisa da minha cabeça e, ao acordar, fui pesquisar se realmente havia tido algum tremor próximo, e achei este. | 7 users found this interesting.  
Bronx / Very weak shaking (MMI II) : I was asleep and was awoken by a light shaking. I write this with a bit of Trepidation because periodically I feeling these shaking which coincide with earthquakes without have been in the earthquake zone.  
Near cologne, germany / not felt : Not felt in germany. | 6 users found this interesting.  
FORT LAUDERDALE / not felt
Marietta Ga / not felt : All normal....felt no changes  
Davao city Ma-a / Strong shaking (MMI VI)
Fortaleza, Ceara, Brazil / not felt
San German, Puerto Rico / not felt
Oakland / Strong shaking (MMI VI) / horizontal (sideways) swinging / 2-5 s
Davao city / Light shaking (MMI IV)
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Aftershocks

[More info]

Recorded aftershocks, latest first (7 quakes)

Date and timeMag
Depth
LocationDetails
Oct 27, 2020 20:51
1 year 48 weeks ago
4.6

10 km
North Atlantic OceanMore
Oct 16, 2020 00:08
1 year 50 weeks ago
4.9

10 km
North Atlantic OceanMore
Sep 17, 2020 03:00
2 years ago
5.7

10 km
North Atlantic OceanMore
Sep 10, 2020 22:26
2 years ago
4.7

10 km
North Atlantic OceanMore
Sep 7, 2020 21:22
2 years ago
4.6

10 km
North Atlantic OceanMore
Sep 7, 2020 21:19
2 years ago
5.0

10 km
North Atlantic OceanMore
Sep 6, 2020 08:29
2 years ago
4.6

10 km
North Atlantic OceanMore

Earlier earthquakes in the same area

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