Central Europe is still under the influence of a cyclone dissipating and moving towards north-east. A new development is seen in the Bay of Biscay (marked by A). Below the situation in the surface pressure chart:
Development in the Bay of Biscay is intensifying. In the Mid Mediterranean there are only low clouds, no development indicated yet (the region is marked as B).
Cloud spiral of the cyclone on the west coast of France is now cleary seen. Convective development behind it indicates strong cold advection from the north-west. In the Mediterranean there are still mainly low clouds.
Occlusion cloud spiral has moved east into the mainland of France.
There is some indication of convective defelopment near the Baleares in front of the cloud spiral (in the marked area).
The occlusion over southern France is getting in a mature stage. Convective development in the Mediterranean is getting stronger.
This seems to be the point where the development in the Mediterranean takes over. The cyclone above south France (A) is dissipating, whereas the development in the Mediterranean intensifies (B). From the appearance of the cloud structures it seems that southwesterly jet, flowing over north Africa and into Mediterranean, is playing a major role in this development.
Development in the Mediterranean is getting stronger, while the first cyclone is dissipating.
There is already an indication of a spiral in the Mediterranean and in the surface pressure chart this low is alredy well pronounced:
The original cyclone is not indicated in the surface chart any longer, although there are still remnants of the cloud spiral over south France (A).
The cyclone in the Mediterranean is intensifying. The cloud spiral of the original cyclone is dissipating and merging with the new one.
Clouds are getting a spiral shape. Convective development south of the cloud head indicate strong cold advection which can be proved by looking at Temperature advection at 700 hPa.
At this point cloud spiral of the cyclone is already fully developed and moving towards Adriatic. Cold air development south of the cyclone cloud head is forming a comma (marked by C), indicating new development there.
The whole system is moving to north-east. Secondary low (C) is now seen over Italy.
Cloud head of the occlusion over Central and SE Europe indicates already a mature stage. Cloud structure shows cleary the regions of warm and cold advection within the cyclone.
A small secondary low (C) is now getting stronger after it entered the Adriatic. This process of strengthening of the cyclones above the Adriatic basin is rather common in the lifecycles of many Mediterranean cyclones.
The centre of the original low is now moving deeper into the mainland, whereas the secondary low is intensifying over Northern Adriatic.
Two low centres (B and C) are now cleary seen in the image: one over Hungary and one in North Adriatic. This is confirmed also in the surface pressure chart:
The whole system is moving to north-east an slowly dissipating.