Snowfall is expected to occur only at high altitudes
It won’t be just a snowy Christmas this year in Europe, including Greece, as a major and large-scale weather phenomenon is underway in the North American region, which is expected to have a significant impact on Europe’s weather during the Christmasaccording to the latest data, as reported by his meteo National Observatory of Athens.
So, according to the meteo, during the weekend 24-25/12 and until at least the middle of next week high pressure is expected to prevail over most of mainly southern Europe, as well as significant rise in temperature in most of Europe, including Greece. In addition, a significant absence of precipitation is expected mainly in the Mediterranean region, including our country, while more rainy weather is expected mainly in West/Northwest and Central Europe.
Snowfalls expected to be noted only in high altitudes mainly in the Alps, while it is also possible to see snowfall at low altitudes in northern parts of Great Britain.
But how is this year’s warm Christmas explained? The atmospheric circulation over North America during Thursday 12/22, “steering” by the position and intensity of a jet stream (strong air current at a height of approx. 10 kilometers from the Earth’s surface), favors the transport of very cold gas masses, of polar origin, from the Canadian region to the southernmost latitudes of the USA to the Gulf of Mexico. At the same time, the specific arrangement of atmospheric systems will favor the formation of an explosive cyclogenesis (a deep barometric low) in the greater Great Lakes region on the US-Canada border on Friday 12/23.
According to the latest forecast data, the formation of this strong barometric low over the North American region is expected to have significant effects on the more easterly atmospheric circulation over the North Atlantic and in Europe over the next few days. More specifically, the explosive cyclogenesis over North America is expected to cause a significant oscillation of the jet stream over the North Atlantic region and Europe. This strong stream oscillation is often associated with extreme and prolonged weather conditions over large areas.
RES-EMP
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