2022 ended with a shiver, but the start of 2023 broke a sweat. 🥶🥵
— NASA Earth (@NASAEarth) January 5, 2023
This weather whiplash may have been caused by changes in the polar vortex, the band of strong westerly winds over the Arctic. Details: https://t.co/gnOAqDOncS pic.twitter.com/4QDmgsNsE5