A powerful magnitude-8.8 earthquake struck off Russia’s Kamchatka Peninsula early Wednesday, shaking buildings in the regional capital Petropavlovsk-Kamchatsky and triggering tsunami warnings across the Pacific. The U.S. Geological Survey put the epicentre about 119 kilometres east-southeast of the city at a depth of roughly 20 kilometres. Waves of three to five metres were recorded along the peninsula, while authorities in Japan, Hawaii and French Polynesia temporarily ordered coastal evacuations before downgrading alerts. Regional officials said several people suffered minor injuries and some structures were damaged, but no deaths were reported. Amid the tremor, surveillance footage from the Kamchatka oncology centre captured four surgeons continuing an operation as ceiling lights and equipment swayed. The medical team completed the procedure without evacuating and the patient is in stable condition, according to regional health minister Oleg Melnikov, who released the video on his Telegram channel. Governor Vladimir Solodov said he will nominate the doctors for a state award, praising their "professionalism and courage". The quake was the most powerful to hit Kamchatka since 1952, local seismologists said, and aftershocks continued through the day, though authorities do not expect stronger shocks in the near term.