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Story summary
- A significant cold air outbreak is expected in Canada and the eastern United States as the Polar Vortex shifts southward in early January 2026.
- Forecasts indicate colder temperatures and snowfall, with anomalies in western Canada and the Midwest as the jet stream shifts to transport cold air.
- This pattern could bring freezing temperatures in the Southeast and significant snowfall in the Northeast, marking a shift from earlier warmer conditions.
