ScOpacus.jpg and ScOpacus2.jpg:
A rare case of Stratocumulus opacus praecipitatio is shown here,
which leads to strong precipitation (a shower) from a relatively
small cloud layer. When the falling stripes would not have reached
the ground, it would have been the more usual type called "Virga".
The line of vision runs from "Front Range" of the Rocky
Mountains in north-easterly direction to the "Plains".
ScOpacus3.jpg and ScOpacus4.jpg
The more common case, where light rain showers derive from a dense,
widely spread layer of Cumulus clouds is presented here. Here only
the edge of the cloud layer can be noticed. The part of the cloud
cover which completely covers the sky is behind the photographer.
ScOpacus1.jpg, ScOpacus2.jpg: S. Borrmann, Boulder, Colorado, summer
ScOpacus3.jpg, ScOpacus4.jpg: R. Weigel, S. Borrmann, Forli, Northern
Italy, APE-Infra Field Campaign, October 2002