A comparison of the cloud configurations at 12.00 UTC (left and right image top) with those in the IR and WV imagery for 18.00 UTC (left and right image bottom) can be summarized into four topics:

• The Wave structure over the west Alps has moved northward without any further development of the spiral structure;
• The area of the Front Intensification by Jet Crossing has further intensified with a wave-like bulge recognizable between the Algerian coast and Sardinia and some very notable Cb developments between the Tunisian coast and south Sardinia. The latter do not only show the typical shape of Cb cells but also a dry zone around them representing sinking air; all thunderstorm events and their synoptic environment are discussed in a separate chapter (compare Development of Thunderstorms and MCSs During the Whole Period);
• The cloudiness in front of the frontal system over the Balkan Peninsula is still discernible and even more intensive, especially over east Slovenia and Croatia which indicates convective developments there;
• High fibrous cloudiness in band form has developed over Libya and has reached the Mediterranean coast.