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Northern hemisphere map shows sensational event by the end of December, a spectacular “division“of the tropospheric polar vortex. What does it mean? A division of the icy masses of the Pole into several branches, one of which would completely involve Europa.
You know well that the core of the polar vortex, that is the area where the greatest cold and the greatest vorticity is concentrated, usually found in Canada, while in the maps that we will offer you, the cold seems to be distributed in three different areas of the hemisphere.
It is as if someone had stepped in to cut an apple by splitting it in two with a clean cut: the river of hot air is the “knife” that was used and you can clearly see it on the map below, the polar vortex splits into two lobes:
A devastating and rare action that can be seen at this time of year, which of course is shown on a somewhat extreme map, but symptomatic of a situation very different from the usual one, arising from the failure of the stratosphere project to couple (not in the biblical sense) with the troposphere and thus compact the polar vortex, which now he feels at the mercy of the warm waves coming from the tropics.
All this could give us a true start to the winter season with a capital I, other maps also bear witness to this, which do not include a division but are certainly not negligible disturbances:
What consequences could there be in Italy? Those tongues of cold air descending towards the Mediterranean suggest disturbed situations that could affect all regions, perhaps bringing snow first to the Adriatic and south at very low altitudes, then to the rest of Italy as well.
Obviously, the hypothesis of a dynamic time for the holiday period is now 65/70% reliable, but it remains to be seen where and how they will affect the cold air masses descending to the south. We refer you to the next updates for this.
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