Credit: Image courtesy of Zhou, W., , Leung, L.R., and Lu, J., Seasonally Dependent Future Changes in the U.S. Midwest Hydroclimate and Extremes. Journal of Climate 35 (1) 17-27. © Copyright 2022 AMS.
The warm-season central U.S. hydroclimate is regulated by two major systems—the midlatitude storm track (red contours) and the subtropical southerly winds (blue arrows). Both are coupled to the westerly jet (yellow shading).