The winter weather patterns influenced by El Niño could result in significant impacts across the United States. Warmer-than-average temperatures in the northern regions may reduce heating demands but could also lead to unusual weather patterns. The active southern jet stream increases the likelihood of heavy precipitation in the southern U.S., potentially causing flooding in vulnerable areas. In the Northeast, nor’easters could bring heavy snowfall, disrupting travel and daily activities. Additionally, the potential for polar vortex disruptions raises the risk of dangerously cold conditions in the mid-latitudes, which could pose threats to vulnerable populations and infrastructure.