It is so cold today due to a significant cold outbreak bringing an unusually intense cold air mass from Eastern Europe westward and southward across much of Europe. This cold air mass is about 8-12 °C colder than usual for early October and is causing a sharp drop in temperatures, including the first frost of the autumn season in many areas. The weather pattern includes a blocking high pressure in the north, allowing cold air to spread and shutting down the normal warmer westerly flow. This results in temperatures dropping below freezing in many places, with strong cold winds and even snowfall in some mountainous regions. This cold outbreak is unusual for early October and is expected to last several days before temperatures potentially warm again later in the month.
This type of cold outbreak is part of a broader pattern that can be influenced by atmospheric waves and the position of high-pressure systems, which can funnel cold air from the east. It may feel colder than expected especially after warmer-than-normal conditions in the preceding weeks.
Additionally, the Earth's tilt and seasonal changes naturally lead to colder air masses being more dominant as the northern hemisphere moves into autumn, contributing to colder weather in October.
In summary, the cold today is mainly due to a rare and significant cold air mass spreading over the region earlier than usual this autumn season, driven by atmospheric patterns that favor the movement of cold air from Eastern Europe westwards and southwards.
