Tsunami waves flood an area after a powerful magnitude 8.8 earthquake struck off Russia's far eastern Kamchatka Peninsula, in Severo-Kurilsk, Sakhalin Region, Russia, July 30, 2025. Photo: Kamchatka branch of the Geophysical Survey of the Russian Academy of Sciences/REUTERS

According to preliminary geodynamic data from the Unified Geophysical Service of the Russian Academy of Sciences, the ground displacement was particularly pronounced in the southern part of the peninsula. Experts noted that the extent of the movement was comparable to that observed after the 2011 earthquake in northeastern Japan.

Scientists also recorded smaller shifts in areas near the city of Petropavlovsk-Kamchatsky. They confirmed that the current deformation pattern aligns with earlier fault predictions, explaining why Severo-Kurilsk experienced more severe impacts, while other areas were less affected.