This is not your typical "winter impacts of El Niño" map. The colors show the frequency of cold or warm winters during the 29 El Niños that occurred from 1940-2022. Places where more than half (15 or more) the El Niño winters were cooler than average by any amount are colored blue. (Whether a winter was above- or below-average was based on comparison with a 30-year rolling average centered on the winter in question.) Places where more than half the El Niño winters were warmer than average by any amount are colored red. Most of the United States is light or medium blue, meaning that cooler-than-average winters were slightly more common than warmer-than-average winters. NOAA Climate.gov map, based on analysis of ERA5 data by Brian Brettschneider.