Every winter, we monitor the behaviour of the polar vortex ♻️ What happens high above Antarctica in the stratosphere can influence things across the hemisphere! The vortex has generally been stronger than normal, but its configuration changed during August, which may be linked to our chilly temperatures 🐧 ...and another strong southerly is pushing up the South Island now! ❄️ During mid-spring, the vortex undergoes a process known as a "final warming", which describes its weakening and eventual