Ice crystals virga falling from what appears like a solitary altocumulus cloud. The first thumbnail is a focused photo taken about 15 minutes later of exactly the same cloud being described. The air was marginally unstable throughout hence the formation of non bad weather cumuliform clouds such as the cumulus humilis clouds in the background which is also indicated by the weather sounding on the second thumbnail. Apart from cumulus, the cloud being described is shown at having formed at altitudes of between 6.8km and 8km. Altocumulus clouds normally form at a slightly lower level of between 2km and 7km. However the photographed cloud, particularly looking at the first thumbnail photo, is clearly altocumulus with a high base. This specific cloud detail is being given away by its cirriform anvil which is known as cirrus spissatus altocumulogenitus (right flank) and cirrus fibratus on the left flank. As usual, a dry air layer below the high mid clouds ensured that falling snow quickly subsided in thin air. Other than slight instability, no particular weather features were observed in the surface pressure chart apart from a weak upper-level trough over Tunisia moving eastwards.