Sc perlucidus
/ 0 Comments / in Low Levels, StratocumulusFormation of stratocumulus clouds around 2 hours after the passage of an occluded front as the weather was clearing. Early that morning, nimbostratus with rain were observed. However the front seemed to have been cold occluded because of colder air. Sudden increase in wind was also observed of gusts up to 52kmh from an E by S direction. Such cloud formations are quite typical after the passage of a cold front or a cold occluded front as the airmass following such fronts are theoretically more stable. Since this airmass was flowing over a slightly warmer sea, this induced weak vertical currents to produce such clouds and the blowing wind streams gave them this beautiful distinctive pattern shaping this cloud photo. The first and second thumbnails show the surface pressure chart indicating the occluded front and the visible satellite image showing clouds corresponding with this front. The third thumbnail is the surface wind movement indicating a frontal system very close to the Maltese Islands at 7AM on the same day.
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