The interaction between El Niño and the polar vortex could result in varied winter weather across the U.S. If the polar vortex weakens, it may funnel extremely cold air into the central and eastern U.S., potentially causing severe winter conditions similar to those experienced in the mid-Atlantic during 2019-2020 (USA Today, 2026). Conversely, a strong polar vortex could lead to a milder winter overall, except for possible impacts along the West Coast. The uncertainty surrounding the strength and behavior of these atmospheric phenomena means that the risks and impacts remain unpredictable, with potential for both extreme cold and milder conditions depending on the evolution of these patterns.