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Strong mag. 6.5 earthquake - Central Mid Atlantic Ridge on Sunday, 30 August 2020 - information

Major magnitude 6.5 earthquake - North Atlantic Ocean on Sunday, Aug 30, 2020 at 9:20 pm (GMT +0)

Major magnitude 6.5 earthquake - North Atlantic Ocean on Sunday, Aug 30, 2020 at 9:20 pm (GMT +0) Major magnitude 6.5 earthquake - North Atlantic Ocean on Sunday, Aug 30, 2020 at 9:20 pm (GMT +0)

Major magnitude 6.5 earthquake at 10 km depth

30 Aug 21:29 UTC: First to report: GFZ after 9 minutes.
Aug 30 21:30: Magnitude recalculated from 6.3 to 6.2.
Aug 30 21:41: Magnitude recalculated from 6.2 to 6.5.

Earthquake details

Date & timeAug 30, 2020 21:20:30 UTC
Local time at epicenterSunday, Aug 30, 2020 at 9:20 pm (GMT +0)
StatusConfirmed
Magnitude6.5
Depth10.0 km
Epicenter latitude / longitude0.76°N / 29.9°W (international territory)
Antipode0.76°S / 150.1°E
Shaking intensityVery strong shaking near epicenter
Felt7 reports
Primary data sourceGFZ (German Research Centre for Geosciences)
Nearby towns and cities
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
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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
6.510 kmCentral Mid Atlantic RidgeGFZ
5.8100 kmCentral Mid-atlantic RidgeEMSC
6.610 kmCentral Mid Atlantic RidgeGeoAu
6.510 kmcentral Mid-Atlantic RidgeUSGS
6.20.8 kmBrazil [Sea]INGV
5.810 kmCentral Mid Atlantic RidgeBMKG

Seismograms

Seismic station: Santiago Island, Cape Verde (SACV/II network) | Distance from quake: 1725 km / 1072 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 (20)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Vero Beach Florida (6137.2 km WNW of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 20-30 s : Rattling and shaking lasted 20-30 seconds. | 2 users found this interesting.  
Vero Beach Florida (6139.7 km WNW of epicenter) [Map] / Light shaking (MMI IV) / 20-30 s : Light shaking inside, enough so that I went outside and could feel it too. Seemed to fade after 20-30 seconds and then had a 10 second shudder at the end where the building shook. Seemed more external though - nothing fell inside the building. | 2 users found this interesting.  
Cabedelo (1040.7 km SSW of epicenter) [Map] / Very weak shaking (MMI II) / single lateral shake / 1-2 s : I was at my computer and felt my table trembling. | 7 users found this interesting.  
near Teresina, Piauí (1565 km WSW of epicenter) [Map] / not felt (reported through our app)
João Pessoa (1039.3 km SSW of epicenter) [Map] / not felt
Pine Hills, Orange, Florida (6278.5 km NW of epicenter) [Map] / Weak shaking (MMI III)
Cherëmushki, South-Western Administrative Okrug, Moscow (8547.5 km NNE of epicenter) [Map] / not felt
Sedco Hills, Riverside, California (9722.9 km WNW of epicenter) [Map] / not felt
Shawboro, NC / Very weak shaking (MMI II) : A friend and I were in a above gr | 2 users found this interesting.  
234t5 / not felt
João Pessoa, Paraíba / not felt
Pacoima / not felt
Raleigh, North Carolina, USA / not felt
João pessoa / Light shaking (MMI IV)
Rialto, ca / not felt
Fortaleza / not felt
Feira de Santana / not felt
Vilas do Atlantico, Bahia / not felt
Carlsbad, CA / Weak shaking (MMI III) / rattling, vibrating / 15-20 s
Western germany / not felt

Aftershocks

[More info]

Recorded aftershocks, latest first (3 quakes)

Date and timeMag
Depth
LocationDetails
Feb 26, 2021 02:43
1 year 31 weeks ago
4.8

10 km
North Atlantic OceanMore
Sep 14, 2020 13:23
2 years ago
4.5

10 km
North Atlantic OceanMore
Aug 31, 2020 09:56
2 years ago
4.7

10 km
North Atlantic OceanMore

Earlier earthquakes in the same area

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