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Old 13th February 2020, 04:57 PM   #5
abaddon
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Join Date: Feb 2011
Location: Republic of Ireland
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Originally Posted by curious cat View Post
I am not really sure what you mean. Maybe a photo would help?
Whatever it is, I have a sneaking suspicion altitude has something to do with it. Contrails normally appear at some 30,000 ft. Most of your everyday cumulus etc clouds hang around a third of that altitude or less.
Nope. Contrails may or may not form at any altitude right down to 0, although far more likely/common at 25k+. That doesn't seem to be the question he is asking. Truthfully, I have no idea what he is asking really. On an overcast day, the cloud base quite clearly still meets the horizon. It is merely a sheet instead of a line as a contrail would be. Absent some elaboration from the OP, nobody can even start to interpret the question, let alone hazard an answer.
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