Stratus Clouds (St)
St Formation
St nebulosus
St fractus
St fractus pannus
St opacus


Stratus fractus pannus Clouds

Being below a large cloud complex, the subspecies of "pannus" can be easily noticed. However the overview that is necessary for its determination is often missing.

StPannus1.jpg: View of a Cumulonimbus calvus systems from below. The observer could not recognize any icing from his point of view. The dark-blue clouds in front of the white ones are the so-called "pannus" subspecies.


StPannus2.jpg, StPannus3.jpg: The cloud system covered the whole sky, so that the exact determination of the Cumulonimbus type was not possible. Strong precipitation with cold raindrops and occasional lightning occurred right before the images were taken. Therefore it can be assumed that this is a Cumulonimbus incus cloud.

StPannus1.jpg: S. Borrmann, Rocky Mountains near Boulder, Colorado, view in north-easterly direction, summer 1991

StPannus2.jpg, StPannus3.jpg : S. Borrmann, Lagua do Banana near Fortaleza, Ceara, Brazil, 29 February 2004, 2:55 p.m.