Moderate mag. 5.6 earthquake - South Atlantic Ocean, Antarctica, on Monday, 27 August 2018 at 20:09 (GMT)

Moderate mag. 5.6 earthquake  - South Atlantic Ocean, Antarctica, on Monday, 27 August 2018 at 20:09 (GMT)

Moderate magnitude 5.6 earthquake at 64 km depth

27 Aug 20:17 UTC: First to report: GFZ after 8 minutes.
Aug 27 20:18: Magnitude recalculated from 5.8 to 5.7.
Aug 27 20:34: Magnitude recalculated from 5.7 to 5.5.
Hypocenter depth recalculated from 10.0 to 64.0 km.
Aug 27 20:35: Magnitude recalculated from 5.5 to 5.6.
Date & time: 27 Aug 2018 20:09:24 UTC
Magnitude: 5.6
Depth: 64.0 km
Epicenter latitude / longitude: 61.85°S / 58.5°W (South Atlantic Ocean, Antarctica)
Nearest volcano: Penguin Island (45 km / 28 mi)
Nearby towns and cities:
24 km (15 mi) W of World's End Island --> See nearby quakes!
35 km (22 mi) N of Napier Rock Island --> See nearby quakes!
Primary data source: GFZ (German Research Centre for Geosciences)
Estimated released energy: 1.6 x 1013 joules (4.4 gigawatt hours, equivalent to 3788 tons of TNT or 0.2 atomic bombs!) More info
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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.
MagnitudeDepthLocationSource
M 5.664 kmSouth Shetland IslandsGFZ
M 5.548 km SOUTH SHETLAND ISLANDSEMSC
M 5.648 km- South Shetland IslandsUSGS
M 5.575 kmSouth Shetland IslandsGeoAu
M 5.730 km950 km al SE de Puerto WilliamsGUG (U. Chile)

shake map
(shakemap: USGS)

User reports for this quake (4)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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king sejong station / Light shaking (MMI IV)
Villa Las Estrellas (Antarctica, 54 km SW of epicenter) : First earthquake that I feel in the Chilean Antarctic, I had felt one in Chile, but not here. (reported through EMSC)
Villa Las Estrellas (Antarctica, 51 km SW of epicenter) : Felt strong in Chilean Antarctic Territory. (reported through EMSC)
Villa Las Estrellas (Antarctica, 51 km SW of epicenter) : He felt very strong in the Chilean Antarctic Territory. (reported through EMSC)
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Aftershocks of the 5.6 quake South Atlantic Ocean, Antarctica, 27 August 2018 20:09 GMT

More info
Recorded aftershocks, latest first (0 quakes):
So far, no aftershocks have been registered.

Earlier earthquakes in the same area

Moderate mag. 5.6 earthquake - South Atlantic Ocean, Antarctica, on Monday, 27 August 2018 at 20:09 (GMT)
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