Image caption
Graph showing seasonal ice coverage across the Great Lakes compared to the average. The dashed line is the historical average of ice cover, the light gray lines are each season of data from 1973 to 2023 and the blue line is the season's data through January 16, 2024. January 1, 2024 had record-low ice cover. Graph by NOAA Climate.gov, based on data from NOAA Coastwatch.