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How Big Can Storm Waves Get?

Published in Oceanography 2 mins read

Storm waves can reach tremendous heights; the largest reliably reported storm wave reached 112 feet.

Here's a more in-depth look at extreme wave heights:

  • Anecdotal Evidence: Many sailors describe encountering "walls of water" during storms, indicating waves of extreme size and steepness. These waves often appear unexpectedly and are characterized by unusually deep troughs.
  • Documented Measurement: The USS Ramapo, in 1933, reported a wave of 112 feet tall in the Pacific Ocean. This remains one of the most credible documented accounts of an extreme storm wave.

It's important to note:

  • Rogue waves, which are unusually large and unexpected waves, can occur even in moderate sea states. While not directly caused by storms, storms can create conditions that are conducive to rogue wave formation. These waves can significantly exceed the height of typical storm waves.
  • Wave height is a complex phenomenon influenced by wind speed, duration, fetch (the distance over which wind blows), and ocean currents. Storms with high wind speeds and long fetch areas tend to generate larger waves.

In summary, while typical storm waves vary in size depending on storm intensity and other factors, extreme storm waves can exceed 100 feet in height, as evidenced by historical accounts and documented measurements.

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