Major winter storm spreads across the U.S., prompting emergency declarations and widespread disruptions
A sprawling winter storm—unofficially dubbed “Winter Storm Fern”—has swept across large parts of the United States, triggering emergency declarations in more than 20 states, grounding thousands of flights, and causing power outages as snow, sleet, and freezing rain move across a huge swath of the country.
A massive winter storm system continues to push across the United States, bringing heavy snow, sleet, and freezing rain that have disrupted travel and strained utilities from the Four Corners through the Midwest and toward the East. The storm—often referred to publicly as “Winter Storm Fern,” an unofficial label used by some outlets—has put tens of millions of people under winter weather alerts and forced state and local officials to shift into emergency footing.
Governors in more than 20 states have issued emergency declarations as the storm’s footprint expands. Transportation agencies have mobilized plow and treatment operations, while airports and rail operators have been compelled to reduce schedules or cancel services. In addition to hazardous driving conditions, freezing rain has heightened the risk of downed trees and power lines, raising concerns about prolonged outages in places where ice accumulations are forecast to be significant.
Travel disruptions have been a defining feature of the event. Flight cancellations climbed sharply over the weekend as conditions deteriorated, with major hubs and regional airports alike affected. Airlines have warned travelers to expect rolling delays as crews and aircraft are repositioned and runways are cleared. Some rail services have also been canceled or adjusted in areas where ice and heavy snow reduce safe operating speeds.
Power interruptions have also spread as the storm moves. As precipitation changed between snow, sleet, and freezing rain, utility crews reported increased damage risk from ice-laden lines and falling limbs. In harder-hit zones, outages rose into the hundreds of thousands, and emergency managers urged residents to prepare for the possibility that restoration could take longer than usual where roads are impassable or conditions remain unsafe for repair work.
Forecasters have emphasized that impacts can vary dramatically within short distances depending on the precise track of the storm and the temperature profile near the ground. That means some communities may see mostly snow, while others could face layers of glaze ice that create more dangerous travel and higher outage risk. Officials have encouraged residents to monitor local advisories, avoid unnecessary travel during the worst conditions, and check on neighbors who may be vulnerable to cold exposure.
With the system still evolving, many jurisdictions are continuing to adjust closures and public-safety guidance. Transportation and emergency officials have repeated a consistent message: plan for delays, keep supplies on hand, and treat changing road conditions as a serious risk—especially overnight when temperatures drop and previously wet surfaces refreeze.