Sc opacus

Formation of stratocumulus clouds as the tail-end of a cold front from a secondary depression was passing over the Maltese Islands during the evening as shown in the SLP chart. These clouds had produced some light rain but did not develop into thunderstorms as surface instability was lacking. This is shown in the weather sounding on the third thumbnail. The stratocumulus cloud looked like having some form of undulation arrangements because of wind shear that was present at the time. The cloud satellite image of the fourth thumbnail taken earlier illustrates what was indicated in the surface pressure later. The cloud base was estimated at 1500 metres above sea-level. Another shot of the same cloud species is also available on the first thumbnail.

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