File name: Polar-Vortex-maps-winter-temperatures-20240501.png Original Resolution: 2000 × 2077 File Size: 1077 KB (MIME Type: image/png) Date Published: May 2, 2024 Download file View image caption January-February-March temperatures compared to the 1958-2024 average across the Northern Hemisphere. NOAA Climate.gov image, adapted from original by Amy Butler.