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Major magnitude 6.6 earthquake - East of South Sandwich Islands on Saturday, 3 April 2021 at 01:16 (GMT) - information

Major magnitude 6.6 earthquake - South Atlantic Ocean on Saturday, Apr 3, 2021 at 12:16 am (GMT -1)

Major magnitude 6.6 earthquake - South Atlantic Ocean on Saturday, Apr 3, 2021 at 12:16 am (GMT -1) Major magnitude 6.6 earthquake - South Atlantic Ocean on Saturday, Apr 3, 2021 at 12:16 am (GMT -1)

Major magnitude 6.6 earthquake at 10 km depth

3 Apr 01:26 UTC: First to report: GFZ after 9 minutes.
3 Apr 01:27: Epicenter location corrected by 3.2 km (2 mi) towards NW.
3 Apr 05:18: Magnitude recalculated from 6.5 to 6.6. Epicenter location corrected by 1.2 km (0.7 mi) towards W.

Earthquake details

Date & timeApr 3, 2021 01:16:40 UTC
Local time at epicenterSaturday, Apr 3, 2021 at 12:16 am (GMT -1)
StatusConfirmed
Magnitude6.6
Depth10.0 km
Epicenter latitude / longitude58.05°S / 7.88°W
Antipode58.05°N / 172.12°E
Shaking intensityVery strong shaking near epicenter
Felt0 reports
Primary data sourceGFZ (German Research Centre for Geosciences)
Nearby towns and cities
Weather at epicenter at time of quakeOvercast Clouds -0.2°C (32 F), humidity: 85%, wind: 14 m/s (27 kts) from SSE
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 kmEast of South Sandwich IslandsGFZ
6.610 kmEAST OF SOUTH SANDWICH ISLANDSEMSC
5.910 kmNear Cape TownRENASS
6.610 kmEast of the South Sandwich IslandsUSGS
6.40.8 kmEast of South Sandwich Islands [Sea]INGV
6.710 kmEast of South Sandwich IslandsGeoAu
6.310 kmEast of South Sandwich IslandsBMKG

Seismograms

Seismic station: Palmer Station, Antarctica (PMSA/IU network) | Distance from quake: 2972 km / 1847 mi | Show on map | Station Info
Seismic station Palmer Station, Antarctica: 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 (5)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Phoenix, Arizona, United States of America / not felt : I'm glad I didn't feel this quake. It was a pretty strong one. My thoughts and prayers are with anyone and everyone that have been harmed theis quake. | 7 users found this interesting.  
  • BOT SPAM!!!!
  • hope you get harmed soon
  • No one is dumb. We’re all in this together. It’s not a wise idea to reject someone’s prayers for another. Regardless of what you might think, Love Always Wins. Blessings to all from America.
  • It was miles from nowhere! Nobody would have felt this quake, let alone suffered!
  • You're dumb
Wolvega (12401.5 km N of epicenter) [Map] / not felt : I was alarmed by the app. But nothing felt. Living to far from the epicenter. | 3 users found this interesting.  
tabriz
UK / not felt
Phils / not felt

Aftershocks

[More info]

Recorded aftershocks, latest first (2 quakes)

Date and timeMag
Depth
LocationDetails
Apr 5, 2021 20:31
1 year 36 weeks ago
5.1

10 km
South Atlantic OceanMore
Apr 3, 2021 11:11
1 year 36 weeks ago
5.0

10 km
South Atlantic OceanMore

Earlier earthquakes in the same area

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