Much of Italy is facing a particularly disturbed weather phase.
An intense trough coming from the North Atlantic, loaded with cold air of maritime polar origin, has reached the central-western Mediterranean, causing unstable southwesterly winds that have affected Northern Italy and Tuscany.
The worsening of the situation is partly due to the arrival of an atmospheric river, a flow of water vapor coming from tropical latitudes, transported to the Mediterranean by a complex synoptic system that also involved the former hurricane Isaac, now heading towards the north-central Atlantic.
This atmospheric river, descending in latitude, encountered the North Atlantic trough, exacerbating the contrasts.
This combination of events has given rise to a depression circulation that, starting from the central Tyrrhenian side, will move towards the Adriatic. Friday, October 4, the disturbed front will move towards Southern Italy, particularly affecting Calabria, Campania, Basilicata, and Apulia with strong thunderstorms, while the Center and North will continue to experience unstable conditions.
However, an improvement is expected in the northwestern regions, such as Valle d’Aosta, Piedmont, western Liguria, and Sardinia, which will enjoy clear skies.
Improvement over the weekend, but it will be just a brief pause
During the weekend, the cyclonic area will move towards the Balkans, allowing a gradual improvement in the weather across the Peninsula. Saturday, October 5 may still see showers along the Adriatic and in the South, excluding Sicily. Sunday, October 6 is expected to see a general improvement in all regions, with a drop in temperatures in the South, accompanied by strong Mistral winds. The arrival of cold air from Northern Europe will lead to a significant drop in temperatures, favoring the return of snow in the Alps, with possible snowfalls below 1400 meters in the central-eastern Alpine sector.
The northern Apennines could also see the first snowfalls above 1600 meters, while a light dusting could decorate the areas at the foot of the Gran Sasso d’Italia. Further updates on the upcoming weather developments will follow.
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