A Winter Storm Grips Half of the U.S.

Feels-like temperatures during the January 2026 U.S. winter storm, showing Arctic cold extending deep into the continental United States. Credit: Ventusky

Between January 22 and 25, 2026, a large-scale winter storm driven by the southward intrusion of Arctic air impacted vast regions of the United States, extending from the central Rockies to the northeastern seaboard. This persistent extreme weather event resulted in widespread power outages, severe transportation disruptions, and significant risks to human health and safety. Emergency declarations were issued in multiple states as authorities mobilized to address compounding infrastructure and public health challenges. 

Key Developments 

• Approximately 180 million people across 37 U.S. states were under winter weather warnings between 22–25 January 2026, affected by snow, ice, freezing rain, and extreme cold. 

• Power outages peaked at over 1 million electricity customers, with the highest impacts reported in Tennessee, Mississippi, Louisiana, and Texas. 

• Severe disruption to transportation systems occurred, including more than 14,000 flight cancellations nationwide and widespread hazardous road conditions. 

• At least seven storm-related fatalities were confirmed, including deaths associated with hypothermia and ice-related road accidents. 

• Emergency and healthcare services reported increased demand due to cold exposure, weather-related injuries, and infrastructure strain. 

Climate Change and Polar Connection 

Peer reviewed research shows that extreme winter events in mid latitude regions are increasingly linked to disruptions of the polar vortex, a large-scale atmospheric circulation that normally keeps very cold air confined to the Arctic. Rapid Arctic warming can weaken this circulation and allow cold Arctic air to move south into North America. Studies demonstrate growing evidence of linkages between Arctic amplification, altered jet stream patterns, and increased frequency of prolonged cold extremes in North America. 

Health Implications 

• Elevated risk of hypothermia and frostbite, particularly among older adults, unhoused populations, and outdoor workers. 

• Increased cardiovascular and respiratory stress associated with extreme cold exposure. 

• Power outages threatening continuity of care for individuals reliant on electrically powered medical devices. 

• Heightened risk of injury due to icy surfaces and transportation accidents. 

Urgent Response Needed 

• Expand emergency heating shelters and ensure equitable access to energy and essential services. 

• Strengthen public communication on cold exposure risks and safe travel guidance. 

• Prioritize outreach to medically vulnerable and socially isolated populations. 

• Reduce future risk through rapid fossil fuel phase out, protection of Arctic ecosystems, a halt to new Arctic drilling, and climate informed preparedness planning. 

Read more about extreme weather here. 

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