Will Polar Vortex Happen Again 2025. When the polar vortex gets weaker, or breaks up, it unleashes cold air to the south. The weakest polar vortex years (dark green dots) occur in easterly qbo winters.

Judah cohen from atmospheric and environmental research (aer) embarked on an experimental process of regular research, review, and analysis of the arctic. Unlike the tropospheric polar vortex, the stratospheric polar vortex disappears during the summer and is.