Hurricane Kristy strengthened into a Category 5 storm on Thursday and was expected to remain away from land as it churns in the Pacific Ocean and weakens over the coming days, forecasters said. Hurricane Kristy strengthened into a Category 5 storm on Thursday and was expected to remain away from land as it churns in the Pacific Ocean and weakens over the coming days, forecasters said. Environment Phys.org – latest science and technology news stories