❄️ Polar Vortex Breaking Apart - Arctic Air Targets North America And Europe ❄️ The polar vortex is breaking apart into two separate cores and the disruption is pushing downward toward the surface. Once it reaches the lower atmosphere, the jet stream shifts and opens a direct path for Arctic air to surge south. Canada and the northern United States face a sharp temperature drop with the risk of late season snow. At the same time, a second branch locks cold air over Siberia and drives instability