A low over Italy is connected to a dissipating system. A trough over western France and southern England indicates new development.
27 February 2004, 00 UTC
Six hours later a small low is seen in the Bay of Biscay. The cloud band connected to that low already has a spiral shape.
27 February 2004, 06 UTC
A low is now over the French coast and getting deeper.
27 February 2004, 12 UTC
At this point, besides a trough connected to the cyclone over western France, there is also a trough in the Meditteranean, on the coast of Spain. This trough is already an indication of the new development there.
27 February 2004, 18 UTC
Six hours later it is clear that there are two systems: one over western France, the other over the Baleares. The latter development in the Mediterranean is getting stronger.
28 February 2004, 00 UTC
There is already a closed surface low in the Mediterranean, over the Genoa Bay. The first low, that came from the Bay of Biscay, shows no signs in the surface pressure field any more, although the cloud spiral is still visible. The development in the Mediterranean took over.
28 February 2004, 06 UTC
The cyclone over the Mediterranean is moving towards mid Italy. The cloud spiral of the first low is merging with this new one.
28 February 2004, 12 UTC
The low is deepening further as the cyclone evolves towards a mature stage. The centre of the low pressure is now over Italy and moving towards Adriatic.
28 February 2004, 18 UTC
Six hours later it has moved to the Adriatic. At this point there is already an indication of a secondary centre over Serbia.
