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just look up and put 2 and 2 together
Originally posted by sezsue
...(and why aren't you commenting on the information that I did give?)...
...I see something different than usual happening on one day, or at one period of the day, compared to another day or period of time, when the humidity and weather temperatures are comparable according to the weathermen....
Originally posted by Jedi411 There is a very simple answer for this... Contrails are an accumulation of mist which when hit with radiation evaporates and turns into a cloud. It is a very fast evaporation process because the moisture accumulation is already present in a higher altitude.
Originally posted by Off_The_Street
[If those ice crystals are formed at temperatures lower than minus forty degrees and at a relative humidity of 100% or higher, then the ice crystals will persist and sometimes even spread.