Ci radiatus

The cirrus filaments in this photo are radially parallel to each other but are merged together into the main cloud hence the sub-species. This merging towards the horizon is mostly due to perspective as seen by the human eye. Such clouds indicate that a weather front is coming over the area which in this case has been proved true. In fact, an African low pressure system together with its related clouds were about to pass over the Maltese Islands as can be proved by the 3rd and 4th thumbnails respectively. The clouds in this photo were at an altitude of more than 10km above sea level which is normal as the disturbance first starts high up in the atmosphere. The second thumbnail proves this. The first thumbnail is a very wide view of the widespread cirrus radiatus cloud. The clouds formed on the actual passage of the front is available here.

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