4-story rogue wave that randomly appeared in the Pacific Ocean is the 'most extreme' ever detected

4-story rogue wave that randomly appeared in the Pacific Ocean is the 'most extreme' ever detected

Scientists describe it as a "once in a millennium" occurrence. A four-story-tall rogue wave that briefly reared up in the Pacific Ocean off the coast of Canada in 2020 was the "most extreme" version of the freaky phenomenon ever recorded, scientists now say. Rogue waves, also known as freak or killer waves, are massive waves that appear in the open ocean seemingly from nowhere. The rogue wave was detected on Nov. 17, 2020, around 4.3 miles (7 ki…