This was taken about November 18 in southern Arizona, USA. I’ve never seen any clouds like this before. Is it natural or caused by some airplane?
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1$\begingroup$ looks like kelvin helmholtz wave. This kind of cloud has been identified on this site. You need to check. I canot answer at the moment because i am using a mobile device to commuinicate $\endgroup$ – gansub Nov 21 '19 at 3:18
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$\begingroup$ Here you go - en.wikipedia.org/wiki/Kelvin%E2%80%93Helmholtz_instability#/… and read this great answer - earthscience.stackexchange.com/questions/10004/… $\endgroup$ – gansub Nov 21 '19 at 4:35
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1$\begingroup$ Thank you! I appreciate it. $\endgroup$ – Thom Blair III Nov 21 '19 at 17:21
