Qualla: Rogue Wave

Rogue Wave: Introduction

Sat, 21 Mar 2026 00:00:00 GMT

Photo credit Katsushika Hokusai, Public domain. On November 17, 2020, a buoy moored in 45 metres of water off Ucluelet, Vancouver Island, recorded something extraordinary. A lone wave 17.6 metres tall reared up among seas averaging about 6 metres, nearly three times the height of its neighbors. Then it was gone. The Ucluelet wave was not the first rogue wave captured by instruments, but it became one of the most widely reported, bringing renewed public attention to a phenomenon that sailors had described for centuries and scientists had spent decades learning to believe.

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Image: Katsushika Hokusai | Public domain

Rogue Wave: From Myth to Measurement

Sat, 21 Mar 2026 00:00:00 GMT

Photo credit Brocken Inaglory, CC BY-SA 4.0. For most of modern oceanographic history, the scientific consensus held that waves exceeding 9 metres were essentially impossible. When French naval officer Jules Dumont d'Urville reported 33-metre waves in the Indian Ocean in 1826, he was publicly ridiculed by his colleague Fran...

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Image: Brocken Inaglory | CC BY-SA 4.0

Rogue Wave: The Draupner Wave

Sat, 21 Mar 2026 00:00:00 GMT

Photo credit CC BY-SA 3.0. Everything changed on January 1, 1995. A laser sensor on the Draupner gas platform in the North Sea recorded a wave 25.6 metres tall in a sea state with a significant wave height of about 12 metres, more than double its neighbors. The instruments were cross-checked and confirmed....

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Image: CC BY-SA 3.0

Rogue Wave: Walls of Water

Sat, 21 Mar 2026 00:00:00 GMT

Photo credit ITA-ATU, CC BY-SA 4.0. Rogue waves are defined as waves whose height exceeds twice the significant wave height, which is itself the average of the largest third of waves in a given sea. They are distinct from tsunamis, which are long-wavelength waves caused by seismic events and are often barely notice...

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Image: ITA-ATU | CC BY-SA 4.0

Rogue Wave: The Ships That Vanished

Sat, 21 Mar 2026 00:00:00 GMT

Photo credit Katsushika Hokusai, Public domain. The human cost of rogue waves is written in the records of vessels that simply disappeared. The cargo ship MS Munchen, a state-of-the-art vessel with multiple watertight compartments, was lost with all hands in 1978. The only wreckage recovered was a lifeboat whose mounting pins ...

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Image: Katsushika Hokusai | Public domain

Rogue Wave: The Wave Off Ucluelet

Sat, 21 Mar 2026 00:00:00 GMT

Photo credit Katsushika Hokusai, Public domain. The 2020 Ucluelet wave, recorded on Amphitrite Bank just 7 kilometres offshore, brought rogue wave science into popular conversation. Its ratio of 2.93 times the significant wave height made it one of the most proportionally extreme waves ever measured by a buoy. The event genera...

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Image: Katsushika Hokusai | Public domain