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We are now: a few more hours and we will reach the heart of a deterioration long and substantial winter as had not happened in the Christmas period for a long time. Heavy and extensive snowfall is expected in the north, with significant accumulations also in large cities.
The climate is destined to change rapidly due to the arrival of a cyclonic vortex of origin polar which, from today until December 28, will lead to an intense phase of bad weather with rains but especially heavy snowfalls at low altitudes and in the northern plains, abrupt temperatures and strong winds from the northern quadrants.
Christmas weather
As can be seen from satellite images, the situation is already getting worse in northern Italy, where cold air is flowing: the skies are covered almost everywhere, it rains, and temperatures are expected to gradually decrease with Nevada up to 400 meters of altitude expected in the afternoon in Emilia-Romagna. Better situation, but not too much, in the Center where the worsening will be felt more in the afternoon with the first rains also extending to most of the South, especially to the Lower Tyrrhenian area. It probably excluded, at this very early stage, Ionian Calabria and Sicily. Temperatures are expected to drop in the Center-North thanks to the arrival of the Tramontana, Bora and Grecale winds. The South and the Greater Islands are still “waiting”.
What will happen to Santo Stefano?
Italy in the clutches of ice: in fact, we will enter the heart of the deterioration caused by the polar air. If in the North the skies are not very cloudy because they are swept by cold winds from the North and the maximum temperatures will be a few degrees (between 5 and 8), the experts tell us that the bad weather will be concentrated in the Center-South with rains , downpours, scattered thunderstorms but mostly snowfall at very low altitude (4-500 meters) especially on the Adriatic side. The cold will be felt everywhere: minimum below zero in the northern regions, slightly above in the other areas of Italy.
The snow comes to the plains
The last Sunday of 2020 will see uncertain weather across the country: if the Center-South still grapples with residual rains and snowfall from the first disturbance, a new zone of depression is on the way, driven by new currents. polar they affect the northwest, where heavy snowfall will be possible even in the plains of Piedmont, Lombardy, Veneto and western Emilia.
In these areas the maximums will suffer further drops, which often do not exceed 0 degrees even in broad daylight. To deal with any inconvenience caused by the snow, yesterday the Milan City Council called the “snow table” where the Deputy Mayor Anna Scavuzzo, the mobility councilor Marco Granelli together with all interested municipal directorates, Civil Protection and the subsidiaries A2A, Amsa, Atm participated and MM. While we read Messenger Service, the action plan was agreed to be carried out in the hours prior to the disturbance and which will affect the entire metropolitan area of Milan, with the aim of not creating annoyances due to accumulation of snow.
Snowfall in big cities
It won’t be a hit and run – a lot Name also for the day of Monday December 28 to the plains of Piedmont, Lombardy, Veneto and western Emilia, but also in the interior of Liguria. The snowflakes will reach cities like Cuneo, Turin, Alessandria, Novara, then also Milan, Varese, Lecco, Como, Bergamo, Piacenza, Parma. Subsequently, the deterioration will also spread to the northeast with snowfall especially in Trentino Alto Adige. According to the latest updates, at the end of the event, until 20 centimeters accumulation in the cities of the plains, more than 30 cm in the countryside and more than half a meter in mountain areas.
Trend for the end of the year
The latest updates foresee repeated and frequent waves of cold air hitting the Mediterranean: an unstable new momentum could break into Italy just for the New Year, with the risk of new snowfall in the Center-North at very low altitudes. Great maneuvers are underway over the North Pole stratwarming that is, an anomalous heating of the stratosphere that, once active, tends to gradually expand towards the upper troposphere with repercussions on the Polar Vortex. At this point it happens that the vortex “breaks”, and the cold contained on the Pole can move towards the south and in areas not used to great frosts.
This long introduction to tell how, in the first days of 2021, Italy could experience new phases cold due to this stratospheric warming. At the moment they are only hypotheses, not forecasts, so it is essential to update ourselves in the coming days and understand what the meteorological trend will be. In the meantime, I take this opportunity to send my sincere Merry Christmas wishes to you and your families.
HERE ALL THE FORECASTS
