Green earthquake (Magnitude 4.7M, Depth:36.098km) in South Of Mariana Islands 28/05/2026 17:57 UTC, No people affected in 100km.. On 5/28/2026 5:57:19 PM, an earthquake occurred in South Of Mariana Islands potentially affecting No people affected in 100km. The earthquake had Magnitude 4.7M, Depth:36.098km.