File name: NH_polarvortex_Jan4-Feb15_2023.gif
Original Resolution: 3200 × 1800
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The location and strength of the Northern Hemisphere stratospheric polar vortex on January 4, 11, 18, and 25, and February 1, 8, and 15, 2023. A disruption caused the vortex to shift southward from the pole toward Europe. Lower heights indicate low pressure (and colder temperatures). NOAA Climate.gov animation, based on GFS data from Laura Ciasto.