Polar Vortex Convention 2025. Winter in the northern hemisphere is shaping up to be a period of great atmospheric dynamism, with the polar vortex (pv) playing a crucial role. If you would like to demo your game at polar vortex email us at.

A weaker polar vortex usually means a weaker jet stream, which. Also, games in the play and win program are listed as marked, and are shelved separately.