From abnormal heat to polar cold: in a few hours, at the end of the weekend, we will drop from the 20°C of the last few days to mid-winter temperatures
.
We'll go back in the calendar, we'll see snow again even on the plains
.
Antonio Sanò, founder of the website www.iLMeteo.it,
in fact confirms the illusion of Spring with temperatures that have widely exceeded 15 degrees even in the Po Valley and reached 20 in the South.
In the next few days we will have a further slight increase in thermal values, but from Sunday evening all this will seem like a distant memory.
From Sunday a polar impulse from Scandinavia will hit the Azores anticyclone present over Italy, undermining its resistance starting from the North-East: later
the icy Russian core NìKola will find the way open for its arctic irruption, scheduled for Monday 6 February.
With the new week the temperatures will drop to the maximum values of at least 10 degrees and we will plunge again into the middle of winter, with Burian or Buran winds
, typical of the steppes of the Sarmatian plain west of the Urals.
At the moment, however, a clear dichotomy persists: we have a rigid division in two between the scenario predicted by the American meteorological model and the European weather scenario.
The main supercomputers that simulate the medium-long term forecast are in total disagreement.
The American supercomputer, with good performances also on our continent, sees the arrival of the icy Russian air extending as far as France with a massive involvement of Italy and repeated snowfalls at low altitudes from North to South: an extreme situation which would spread winter for many days throughout Italy.
The European supercomputer, which has been based in Bologna for several months, foresees a faster, less extensive break-in and with the main involvement of the Adriatic belt.
The cold would be important and widespread but with a more eastern and faster trajectory of the Russian core NìKola.
In summary, for the short-term forecast, the models agree in seeing a phase of anomalous heat until the weekend: the weather will be good almost everywhere with some more thickening not excluded on the Tyrrhenian coast.
Then from Sunday evening everything will change: from the fifth day of the forecast, as mentioned, the paths of the American and European models will separate;
it is likely that the main weather scenario will follow a middle path between those indicated by the two models, but at the moment we must continue to calculate and monitor the exact trajectory of the cold and the expected consequences on Italy for the next week.
IN DETAIL
Friday 3.
In the north: sunny except for local nocturnal fog.
In the centre: sun disturbed at times by maritime clouds along the Tyrrhenian Sea.
In the south: sunny at times variable between Puglia and Calabria.
Saturday 4
.
In the north: sunny except local nocturnal mists.
Middle: sunny except for clouds in Tuscany until morning.
In the south: prevailing sun, sometimes unstable between Calabria and Sicily.
Sunday 5.
In the north: increasing clouds.
In the middle: it gets worse from the evening.
In the south: good weather and warm for the period.
Trend: arrival of cold air from Russia, winter coming week
Trend: arrival of cold air from Russia, winter coming week
