The Stratospheric Polar Vortex is going to take a hit here in the medium-range under a displacement event off the North Pole. This is the most vulnerable we've seen the vortex so far this Winter. To be seen on how this evolves and what impacts it has on the pattern. pic.twitter.com/hyTqzf5ige

— Mike Ventrice (@MJVentrice) January 25, 2020