The polar vortex brought unusually cold weather to the area.
Полярный вихрь принес в регион необычно холодную погоду.
Definitions
A polar vortex is a large area of low pressure and cold air surrounding the Earth's poles. It is a persistent, large-scale cyclone that can lead to extreme winter weather conditions in the mid-latitudes when it weakens or becomes unstable, allowing frigid air to spill southward.
