Tag: United States
24 November 2025
Polar Vortex Disruption Triggers Early December Cold Snaps Across U.S. as Stratospheric Warming Peaks
A rare early-season polar vortex disruption, triggered by sudden stratospheric warming in November 2025, will send Arctic air plunging into the U.S. between December 1–7, with temperatures 20–30°F below average in the Northern Plains, Pacific Northwest, and Minnesota.
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