Finally, the first cold spell of the season is reaching the Italian Peninsula. As we can see in Figure1, easterly winds (Bora, Grecale) coming from the Balkans are blowing over the Adriatic sea, reducing the humidity and causing clear skies in the Po valley. However, these winds are causing the stau effect in Piemonte and Emilia Romagna, where overcast conditions occur. This is happening also along the peninsula, with more clouds on the east coast and bright conditions on the west.
The cold spell is causing (and will cause) a decrease in both minimum and maximum temperatures, with snow showers especially on the Appennines (low-medium height) and bright (but chilly) conditions elsewhere. The temperatures will plummet especially in the North, after weeks of mild conditions, with minimum values probably observed between next Monday and Tuesday. In Figure2 is shown the comparison between the actual temperatures and the situation observed 24 hours ago (Friday).
It is clear how the main variation is observed in the Alps, Adriatic coast and Sardinia (decrease in 4-6 °C in 24 hours).