Altocumulus castellanus clouds over a rural scene. Altocumulus clouds occur at middle altitudes (2400-6000 metres). There are several types of altocumulus clouds. Altocumulus castellanus clouds indicate medium-level instability in the atmosphere and often precede thundery conditions. A thunderstorm occurred around three hours after this photograph was taken. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / STEPHEN BURT |
Taille de l’image : | 5189 px × 3459 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |