Green earthquake (Magnitude 4.9M, Depth:57.943km) in South Sandwich Islands Region 30/06/2026 15:15 UTC, No people affected in 100km.. On 6/30/2026 3:15:17 PM, an earthquake occurred in South Sandwich Islands Region potentially affecting No people affected in 100km. The earthquake had Magnitude 4.9M, Depth:57.943km.