Update: 5.4 magnitude earthquake recorded near South Sandwich Islands region on Aug. 21

Published Aug 21, 2026

A 5.4 magnitude quake shook near South Sandwich Islands region on Friday around midday, according to the U.S. Geological Survey.

The USGS reported a tremor in the region at 13:06 UTC (11:06 local time). The epicenter was of South Sandwich Islands region, at a depth of 159 km.

Did you feel it?

Those who experienced the earthquake are encouraged to report it via the USGS Felt Report form.

Impact and estimated losses

The USGS categorized this as a Green Alert, which means there is a low likelihood of casualties and damage.

Structure information summary

Overall, the population in this region resides in structures that are a mix of vulnerable and earthquake resistant construction. The predominant vulnerable building types are adobe block with concrete bond beam and unreinforced brick with concrete floor construction.

Source: The U.S. Geological Survey