According to the latest climatological analyzes there are strong hints that During the winter 2025/2026 will weaken the polar whirlwind – One of the key elements that affect the course of winter weather in the northern hemisphere, writes.
A weaker polar vortex in the stratosphere often means disruption or weakening of nozzle flow in the lower atmosphere layers. This can lead to a more dynamic and extreme course of winter in areas such as the United States, Canada or Europe – including Slovakia.
Meteorologists draw attention to the emergence of a “almost ideal storm” of conditions that could contribute to a significant weakening of this virus. These are three main global factors – Enso (cold anomalies or weak La Niña), QBO (stratospheric winds) and the loss of sea ice – whose development is currently being monitored. Right The combination of these factors could create conditions for extremely fluctuated winter weather.
In the coming weeks, experts will analyze in detail the development of these factors and their impact on the polar vortex and the overall circulation of the atmosphere. Already, however, professional circles warn that the upcoming winter may be much more variable compared to the normal average – with the possibility of more frequent invasions of Arctic air into the middle latitudes, but also fluctuations between extreme cold and warmer periods.
Polar vortex This again plays a key role in how winter weather will develop in our region. His strength or weakness can decide whether we have a mild or extreme winter.
Goes o An extensive system of cold air circulation above the polar areas of the northern and southern hemisphere. Most often, however, the Northern Polar Vamp is monitored as It significantly affects the weather in Europe, North America and Asia. This vortex reaches high into the atmosphere – from the bottom layer of the Earth’s atmosphere, the troposphere (where the normal weather takes place) to a higher stratosphere, where the ozone layer is located.
Scientists divide the polar vortex into two parts: upper (stratospheric) a lower (troposphere). The upper part usually has a more symmetrical and circular shape, as it moves high above the earth’s surface without large obstacles. But the lower part is much more susceptible to disruptions – It is influenced, for example, by mountain terrain or strong pressure formations that can disrupt the air flow.
The state of the polar vortex is particularly important during the winter. Strong and stable vortex usually maintains cold Arctic air “locked” in the polar region, which brings milder conditions for Europe and the United States. However, a weak whirlwind means a disturbed nozzle current and thus a higher probability that the Arctic air will penetrate into lower latitudes – including our region. The result may be cooler, snowy and more variable winter.
