Ac floccus

Ac castellanus

Ac stratiformis

Ac stratiformis

Ac castellanus

Ac castellanus

Ac lenticularis

Ac castellanus

Ac mammatus

Ac lenticularis

Ac stratiformis

Ac floccus

Ac altostratomutatus

Ac castellanus

Ac stratiformis

Ac undulatus

Ac opacus

Ac castellanus

Ac floccus

Ac stratiformis

Ac castellanus

Ac lacunosus

Ac mammatus

Ac mammatus

Ac stratiformis perlucidus

Ac floccus virga

Ac stratiformis translucidus

Ac translucidus radiatus

Ac cumulonimbogenitus

Ac floccus

Ac castellanus

Ac floccus

Ac cumulogenitus

Ac castellanus

Ac castellanus

Ac mammatus

Ac stratiformis

Ac perlucidus

Ac translucidus

Ac perlucidus

Ac virga

Ac undulatus

Ac castellanus

Cc & Ac virga

Ac floccus

Ac virga

Ac castellanus

Ac mammatus

Ac duplicatus

Ac volutus

Ac castellanus

Ac undulatus

Ac undulatus

Ac undulatus

Ac virga

Ac undulatus

Ac virga

Ac undulatus

Ac floccus

Ac floccus

Ac virga

Ac lenticularis

Ac perlucidus

Ac virga

Ac undulatus

Ac floccus

Ac undulatus

Ac castellanus

Ac undulatus

Ac castellanus

Ac lacunosos

Ac undulatus

Ac undulatus

Ac virga

Ac radiatus

Ac undulatus

Ac opacus

Ac undulatus

Ac perlucidus

Ac stratiformis

Ac virga

Ac mammatus

Ac opacus

Ac undulatus

Ac opacus

Ac undulatus

Ac perlucidus

Ac undulatus

Ac perlucidus

Ac duplicatus

Ac undulatus

Ac castellanus

Ac castellanus

Ac virga

Ac undulatus

Ac virga

Ac translucidus

Ac perlucidus

Ac translucidus

Ac floccus

Ac undulatus

Ac mammatus

Ac mammatus

Ac undulatus

Ac translucidus

Ac perlucidus

Ac undulatus

Ac undulatus

Ac undulatus

Ac perlucidus

Ac stratiformis

Ac floccus

Ac perlucidus

Ac mammatus

Ac castellanus

Ac stratiformis

Ac castellanus

Ac castellanus

Ac undulatus

Ac mammatus

Ac undulatus

Ac lenticularis

Ac opacus

Ac perlucidus

Ac mammatus

Ac undulatus

Ac mammatus

Ac mammatus

Ac castellanus

Ac virga

Ac mammatus

Ac undulatus

Ac undulatus

Ac lenticularis

Ac floccus

Ac perlucidus

Ac perlucidus

Ac floccus

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Ac undulatus

/ 0 Comments / in Altocumulus, Medium Levels

Formation of small undulations within the cloud layer due to atmospheric wind shear shown in violet as `Cat` by the weather sounding. The cloud above it was probably Cirrostratus. Another picture, click on the first thumbnail, shows the undulations more clearly but is a bit grainy.

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