High cloud
Cirrus and other high cloud that shades the ground.


High cloud shows how much of the sky is covered by cloud high above, such as cirrus, in percent.
How to read it
Section titled “How to read it”High cloud does not affect the flying directly, but it shades the ground. A thick veil cuts the sunshine and with it the heating that drives the thermals. It is drawn as a translucent white veil over the map.