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Circular cycloidal marks observed following an F4 tornado near Scottsbluff, Nebraska in 1955

Cycloidal marks, also known as cycloidal damage swaths, are lineo-circular piles of debris that are produced by some powerful multiple-vortex tornadoes.[1][2] Cycloidal marks are typically an indication that a tornado possessed suction vortices. Notable tornadoes that have produced cycloidal marks include the 2008 Parkersburg–New Hartford tornado,[3] 2016 Dodge City tornadoes and the 2022 Nullarbor Plain tornado.[4][5] Cycloidal marks created by dust devils have been documented on Mars by the Mars Global Surveyor.[6][7]

See also

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References

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  1. ^ Wakimoto, Roger (October 4, 2021). "The Dodge City Tornadoes on 24 May 2016: Understanding Cycloidal Marks in Surface Damage Tracks and an Analysis of the Debris Cloud". University of Maryland. Retrieved February 6, 2025.
  2. ^ Butler, Kirstin. "The Remarkable Mind of Mr. Tornado". PBS. Retrieved February 6, 2025.
  3. ^ Lipar, Matej (November 2024). "Tornado scar on the Nullarbor Plain, Australia". Journal of Southern Hemisphere Earth System Science. Retrieved February 6, 2025.
  4. ^ Wakimoto, Roger M.; Wienhoff, Zachary; Reif, Dylan; Bluestein, Howard B.; Lewellen, David C. (June 1, 2022). "The Dodge City Tornadoes on 24 May 2016: Understanding Cycloidal Marks in Surface Damage Tracks and Further Analysis of the Debris Cloud". Monthly Weather Review. 150: 1233–1246. doi:10.1175/MWR-D-21-0262.1. ISSN 0027-0644.
  5. ^ Schultz, Isaac (November 25, 2024). "Researchers Pinpoint Cause of Strange Scar in Australian Outback". Gizmodo. Retrieved February 6, 2025.
  6. ^ "PIA04564: Cycloidal Dust Devil Track". NASA. Retrieved February 6, 2025.
  7. ^ "Cycloidal Dust Devil Track". NASA Jet Propulsion Laboratory (JPL). Retrieved February 6, 2025.
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