On Friday Morning The moisture content in the air at some levels was about 98% the dew point and air temperature would also be relevant to the sky looking like that .
The conditions at higher levels were drier , The ones at higher altitude were leaving shorter vapour trails as I noticed myself .
What do you class as low ? Those trails are likely to have been above 26,000ft or more likely 30,000+ ?
The image is from 7.30am on the 9th taken from https://planefinder.net/ using the playback function on that site . the altitude information etc is labeled on each plane you can use the same thing to view your own area at 11am Commercial aircraft are often given a direct routing or short cut between waypoints taking them off the standard flight path .
I don't understand how the vapour trails follow the sun which always travels West across the sky . They will surely be at the mercy of the wind direction which can often be 100mph at some of the altitudes planes fly ?
The conditions at higher levels were drier , The ones at higher altitude were leaving shorter vapour trails as I noticed myself .
What do you class as low ? Those trails are likely to have been above 26,000ft or more likely 30,000+ ?
The image is from 7.30am on the 9th taken from https://planefinder.net/ using the playback function on that site . the altitude information etc is labeled on each plane you can use the same thing to view your own area at 11am Commercial aircraft are often given a direct routing or short cut between waypoints taking them off the standard flight path .
I don't understand how the vapour trails follow the sun which always travels West across the sky . They will surely be at the mercy of the wind direction which can often be 100mph at some of the altitudes planes fly ?