A weather front bringing heavy and persistent rainfall will pass over southern Italy, western Greece, and Kythira, according to the predictions of G. Papavasiliou and K. Lagouvardos.
The formation of an extensive high-pressure system over the past few days in the North Atlantic region is causing a significant change in weather conditions over Europe in the coming days. The reason for this change is a shift in the direction of the jet stream from westerly to northerly over Western Europe. The jet stream is a strong air current at an altitude of approximately 10–11 kilometers above the Earth’s surface, moving from west to east. The jet stream is found in regions where there is a significant temperature difference between two air masses, and its movement determines the formation and movement of barometric systems.
This change in atmospheric circulation and the intense oscillation of the jet stream over the Western Mediterranean region will result in the transport of cold air masses toward Westernand Central Europe, while warm air masses are expected to move over the Eastern Mediterranean. Thus, the broader region of the Central Mediterranean and Southeastern Europe will be situated at the boundary between two air masses with a significant temperature difference, thereby creating a zone where the formation and movement of successive barometric lows are expected in the coming days. This will result in heavy and persistent rainfall in parts of southern Italy, the western parts of the Balkan Peninsula, and the western parts of Greece at least until the beginning of next week.
