Temperatures experienced sharp fluctuations across the Balkans, marked by unusually wide gaps between daytime highs and overnight lows, a phenomenon known as the diurnal range. Prolonged sunshine dominated the region due to an area of high pressure, while clear night skies allowed accumulated heat to escape rapidly into the atmosphere without any cloud cover to trap it. In the Montenegrin town of Kosanica, where October typically sees an average temperature difference of 11 degrees between a daytime high of 15C and a minimum of 4C, the gap between day and night temperatures soared to 30C on the fourth and fifth of October, more than doubling the usual monthly average.
Elsewhere across the continent, high pressure is set to build over northern and western areas, driving a low-pressure system southward toward the Mediterranean. This system is forecast to intensify as it tracks across the Adriatic and Ionian seas before shifting eastward into the Aegean Sea by the middle of the week. Consequently, Greece faces incoming spells of strong winds and heavy rain. Forecasting models indicate widespread precipitation totals of 50 to 150 millimeters, with the heaviest rainfall anticipated in the vicinity of Skiathos island.
As the week concludes, the weather system is expected to push further east, bringing scattered showers to portions of Crete. That island experienced severe flooding just a week prior when intense storms washed multiple trees and vehicles directly into the sea.
Simultaneously, Hurricane Simon, a powerful category 4 storm, has been tracking near the Pacific coast of Mexico close to Jalisco state. Ranking as the latest among 21 named Pacific storms this season, 11 of which have escalated to hurricane status, Simon registered a central pressure of 933 millibars and maximum sustained winds approaching 150 mph. Meteorologists anticipate that the hurricane will lose strength quickly if its center moves inland and becomes detached from the warm ocean waters that sustain it.
Heavy rainfall is already impacting southwestern Mexico, with anticipated accumulation totals ranging widely between 300 and 400 millimeters across the region, and potentially reaching up to 500 millimeters in the most heavily affected zones.