Strong mag. 6.1 earthquake - 6.1 SOUTH GEORGIA ISLAND REGION on Sunday, 21 August 2016
Strong mag. 6.0 earthquake - SOUTH GEORGIA ISLAND REGION on Sunday, 21 August 2016
This quake was likely an aftershock of the M 7.5 quake: South Georgia Island Region on Fri, 19 Aug 07h32, which had occurred 1 day 20 hours earlier.

Hypocenter depth recalculated from 10.0 to 15.0 km.
Aug 21 04:07: Magnitude recalculated from 6.1 to 6.4.
Hypocenter depth recalculated from 15.0 to 10.0 km.
Hypocenter depth recalculated from 10.0 to 20.0 km.
Aug 21 07:16: Magnitude recalculated from 6.4 to 6.0.
Hypocenter depth recalculated from 20.0 to 300.0 km.
Hypocenter depth recalculated from 300.0 to 10.0 km.
Aug 21 04:07: Magnitude recalculated from 6.1 to 6.4.
Hypocenter depth recalculated from 15.0 to 10.0 km.
Hypocenter depth recalculated from 10.0 to 20.0 km.
Aug 21 07:16: Magnitude recalculated from 6.4 to 6.0.
Hypocenter depth recalculated from 20.0 to 300.0 km.
Hypocenter depth recalculated from 300.0 to 10.0 km.
Magnitude: 6.0
Depth: 10.0 km
Epicenter latitude / longitude: 55.35°S / 31.74°W

Nearest volcano: Protector Shoal (251 km)
Primary data source: EMSC
Estimated released energy: 6.3*10^13 J (17.5 GWh / 15080 tons of TNT / 0.9 atomic bombs equivalent) [learn more]
Data for same earthquake as reported from other agencies
Time | Mag. / Depth | Location | Source | |
Sun, 21 Aug 2016 | ||||
Sun, 21 Aug 03:45 UTC | M 6.1 / 10 km | South Georgia Island Region | GFZ | |
Sun, 21 Aug 03:45 UTC | M 6.4 / 10 km | - South Georgia Island region | USGS | |
Sun, 21 Aug 03:45 UTC | M 6.2 / 19.5 km | South Georgia & the South Sandwich Is. [Sea] | INGV |
"I felt it" reports:
Earthquakes in same area up to 1 year afterwards (aftershocks) - show
Earthquakes in same area up to 1 year afterwards (likely aftershocks)
Time | Mag. / Depth | Location | Map | Source |