Moderate mag. 4.6 earthquake - South Atlantic Ocean, South Georgia & South Sandwich Islands, on Saturday, December 4, 2021 at 02:06 GMT -
Quake Data | Interactive map | User Reports | Earlier quakes here | Quakes in or around South Georgia and the South Sandwich Islands


Moderate magnitude 4.6 earthquake at 10 km depth
Earthquake details
Date & time | Dec 4, 2021 02:06:39 UTC - |
Local time at epicenter | |
Status | Confirmed |
Magnitude | 4.6 |
Depth | 10.0 km |
Epicenter latitude / longitude | 60.8858°S / 24.6631°W ![]() |
Antipode | 60.886°N / 155.337°E |
Shaking intensity | Moderate shaking near epicenter |
Felt | 0 reports |
Primary data source | USGS (United States Geological Survey) |
Nearest volcano | Thule Islands (219 km / 136 mi) |
Nearby towns and cities | |
Estimated seismic energy released | 5 x 1011 joules (139 megawatt hours, equivalent to 120 tons of TNT) | about seismic energy |
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. | Depth | Location | Source |
4.6 | 10 km | South Sandwich Islands Region | USGS |
User reports for this quake
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Earlier earthquakes in the same area
Click here to search our database for earlier earthquakes in the same area since 1900!