United States
News Desk | Weather
A surge of Arctic air linked to a disrupted polar vortex is pushing dangerously cold temperatures across parts of North America, prompting weather warnings, travel disruptions, and public safety advisories. Forecasters say shifts in the jet stream are allowing frigid air normally confined to the Arctic to move south, affecting communities across the central and eastern United States, according to government meteorologists.
The polar vortex is a large area of low pressure and cold air that circulates around the Arctic each winter. When it weakens or becomes displaced, lobes of cold air can plunge southward, bringing sharp temperature drops, strong winds, and increased risk of frostbite and hypothermia.
Meteorologists at the National Weather Service said the current pattern reflects a stretched jet stream that is channeling Arctic air into mid-latitude regions. Officials warned that wind chills in affected areas could reach dangerous levels, especially during overnight and early morning hours.
State and local authorities have urged residents to limit time outdoors, check on vulnerable neighbors, and prepare for potential impacts to power systems and transportation. Several school districts and municipal services reported weather-related adjustments as the cold intensified.
The polar vortex itself is not a storm but a circulation pattern that can influence winter weather for days or weeks. Scientists note that sudden stratospheric warming events and broader atmospheric dynamics can contribute to these disruptions, though individual cold outbreaks vary in duration and intensity.
Airlines and transit agencies advised travelers to monitor conditions closely, citing the potential for delays due to extreme cold affecting equipment and operations. Public health officials emphasized the importance of layered clothing and proper heating to reduce cold-related injuries.
Forecasters said temperatures are expected to moderate as the jet stream repositions, though additional cold shots remain possible during winter months. The story is developing.
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