Bad weather coming, waiting for the ‘Perfect Rhone’ in Italy, what it is and what it can cause

Italy is currently affected by a flow of cold currents which causes moderate instability in many regions of our country, and temperatures widely below normal especially in the North-East, the entire Adriatic side and the South. But the weather is about to change again starting from Sunday 21st April. Let’s try to understand in detail what will happen. Starting from a look at the European sector, a flow of cold air will project towards the Alps and will tend to go around them due to the effect of the mountain barriers. We are often in front of the eastern entrances from the Porta della Bora, but this time something different will happen, typical of 90s style disturbances. Let’s see why.

Much of thecold air will in fact tend to go around the Alpine barrier wedging through the Rhone Valley (in France), diving into the Gulf of Lion and the Sea of ​​Corsica. All also fueled by a freezing core of -32°C at 5500 meters above sea level, which will further destabilize the atmosphere. This meteorological configuration will favor the formation of a minimum of low pressure between the French Riviera, the Sea of ​​Corsica and the Ligurian Gulf which in weather jargon is called with the English expression ‘Genoa Low‘ or the low pressure of Genoa. This particularly rare Ligurian depression in recent years is the perfect baric configuration for the arrival of widespread bad weather in many regions of Northern Italy.

But it didn’t end here. The Cyclonic vortex it will also recall the part of the cold air entering from the Porta della Bora (Trieste), making it rise along the entire Valpadana up to Piedmont and favoring the so-called ‘Perfect RodanataIt brings heavy rains, thunderstorms but also snow, even down to very low altitudes or on the plains in some regions. The vortex over the Ligurian region will therefore be fed both by the cold air descending from the Porta della Bora and by the return of cold currents from the east into Valpadana.

The eyes are focused above all between Liguria and Piedmontwhere the white lady could trespass up to the plains between Cuneo and the lower Asti area (Langhe area), around 5-600 meters also on the Riviera di Ponente even on the maritime side. Rain and bad weather will also affect the other regions of Northern Italy, but with snowfall at slightly higher altitudes, including in the Northern Apennines.

Even in other areas of the North, where the weather will be unstable, the temperatures maximums will be abundantly maintained below the average for the period with values ​​that will struggle to reach the threshold of 10°C.

We may have to wait until more than mid-next week to see a change in weather. At that point, the air currents could orient themselves from the south-west, due to a timid approach of thehigh pressure to our country, thus giving rise to a gradual rise in temperatures.

However, this forecast still remains uncertain, as the main international computing centers have not yet reached a common trend line.
The only certain thing is that at least until the middle of next week we will experience a very difficult situation Freddo for the period.