Green earthquake (Magnitude 4.9M, Depth:131.676km) in South Sandwich Islands Region 25/05/2026 16:12 UTC, No people affected in 100km.. On 5/25/2026 4:12:57 PM, an earthquake occurred in South Sandwich Islands Region potentially affecting No people affected in 100km. The earthquake had Magnitude 4.9M, Depth:131.676km.