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1 minute, 55 seconds
WINTER IS BACK IN LONG: the continuation of December without a doubt until winter is forced to one pause to reflect induced by the arrival in Western Europe and the Mediterranean of a large cell of high pressure. It will be a mixed matrix anticyclone, initially subtropical and then Azorean because the air mass will come in a first phase (early in the week) from North Africa and then (between Tuesday and Wednesday) from the Atlantic. Its intrusion into our winter dynamics will be caused by a temporary strengthening of the polar vortex which will prevent the disturbed flow of the North Atlantic from reaching our latitudes.
Governing time over north-central Europe will be a large low pressure vortex close to the UK, which will be the dominant feature throughout the week. As we know winter anticyclones have different prerogatives over Italy, with a north often affected by mists and a South Center benefited more from the sun. Another important consequence will be the temperature rise as a consequence of the arrival of the softer air. Will suffer especially at high altitude and especially at the beginning of the week when thermal zeros can splash even above 3000m. This thermal rise in altitude will be a danger to the stability of the snow cover accumulated in the last days in the Alps.
THERE WILL BE SOME DISORDER AND EVEN RAIN: after the first strictly African phase, the anticyclone will assume more Azorean characteristics, especially in the north-central regions. This is because the deepening depression over the UK will push south and even if it fails to break through to the Mediterranean. some moist and weakly unstable infiltration it will still reach the Peninsula. Then we will have some cloudy passages associated with some weak precipitation especially in the North but perhaps also in part of the Center.
WEEKEND 19-20 UNDER OBSERVATION: at the end of the week and particularly during the weekend the situation could change for the entry into the Mediterranean of a pulse of colder air from the North Sea. If the models confirm what for now is only one hypothesisTowards Sunday we could see a more organized deterioration with the return of rain and snow in the mountains. To be up to date.
For more details on the forecast, see the specific weather section in Italy.
To find out if there are alerts about your location and what type, see our Alerts section
To know in detail the state of the seas and winds, click here.
To know the weather trend, check our medium and long-term forecasts.
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