Update: Earthquake shakes region near South Sandwich Islands region on Oct. 11 – 5.5 magnitude detected

Published Nov 1, 2025

According to the U.S. Geological Survey, a 5.5 magnitude quake occurred near South Sandwich Islands region on Saturday around midday.

It was reported that a tremor struck the area at 13:07 UTC (11:07 local time). The epicenter was located of South Sandwich Islands region, at a depth of 49 km.

Did you feel it?

If you felt the earthquake, you can submit a report through the USGS Felt Report form.

Impact and estimated losses

Green alert for shaking-related fatalities and economic losses. 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.

Last week’s quake

Over the last week, another magnitude 5.4 tremor was centered in the area. The event was registered near South Sandwich Islands region too, prior to this quake.

Source: The U.S. Geological Survey