
Cold air has been pushing southwards across Eastern Europe and much of northern Asia in recent days
It has been an early and quite vicious start to the winter in parts of Eastern Europe. From the Baltic Sea states of Latvia, Lithuania and Estonia in the west; to Russia's Siberia in the east; and the Caucuses in the south; the end of October and early November have seen marked changes in weather patterns.
Cold air has been pushing southwards across Eastern Europe and much of northern Asia in recent days. Many climatologists believe this is a sign that changes in the polar vortex are likely to lead to a cold winter ahead.
The polar vortex is an area of low pressure, high up in the atmosphere. It is at its most intense during the winter months. There have been signs in recent years that it is beginning to weaken, and predictions for the coming winter suggest it will weaken significantly.
This weakening is likely to be the result of climate change, being linked to the decrease of Arctic sea ice in recent years.














Comment: See also: Animals slaughted due to record snowfall with five times the monthly normal precipitation in Yakutia, Russia
Heavy snowfall in northwestern Iran accompanied by lightning and thunder
Severe winter conditions strike eastern Turkey
Cold snap hits northern China, with some areas experiencing lowest October temperatures on record