Polar Vortex Forecast 2 2025 Forecast. The polar vortex strength, as measured by the speed of the winds around the 60n latitude circle and 10 hpa pressure level, remains stronger than average, and is currently. The possibility still exists of a lobe, or piece, of the tropospheric polar vortex diving south from canada and into the south and southeast, sending temperatures plunging well.

Below is the polar vortex forecast image in the lower stratosphere at the 50mb pressure level (20km/12.5miles) in early january. Learn about the science behind it, expected impacts, how to prepare, and the connection to climate.