The upcoming Arctic outbreak is expected to be colder and more widespread than the recent event, affecting around 81 million people with plunging temperatures below zero.
The hazardous cold could disrupt the South and Southeast significantly, with a potential snow and ice storm expected to hit midweek.
Factors contributing to this outbreak include a strong high-pressure ridge in the jet stream and a trough across the central U.S., enabling Arctic air to move south.
The Arctic air surge is linked to a stretched tropospheric polar vortex, emphasizing its distinct effect compared to the stratospheric polar vortex.
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