As the **polar vortex** takes a sudden dive south, millions across the United States brace for a triple surge of Arctic cold. This phenomenon, a massive circular weather system typically confined to the Arctic, has shifted, allowing frigid air to invade lower latitudes.
On December 5, 2025, the first wave of this Arctic blast began, sending temperatures plummeting across the central and eastern U.S. Forecasters warn that this is just the beginning, with two more rounds of cold air expected to follow through mid-December. The displaced polar vortex is set to bring the coldest conditions of the season so far, with temperatures in some areas threatening to break century-old records.
What exactly is a **polar vortex**, and why is it causing such a dramatic shift in weather? The polar vortex is a large area of low pressure and cold air surrounding both of the Earth's poles. It forms in the upper atmosphere and typically keeps the coldest air locked in the Arctic. However, disruptions to this system can cause it to weaken and shift, allowing cold air to spill southward. This is precisely what is happening now, as a Stratospheric Warming event has disrupted the polar vortex, sending its core into North America.
The impact of this Arctic invasion is already being felt. The **National Weather Service** reported sub-zero temperatures across Minnesota early Thursday, with wind chill values dipping as low as -25°F. Meanwhile, cities across the Midwest and Northeast are under winter storm and wind chill advisories, with dangerous conditions expected to persist through the weekend.
To track the **Arctic blast** in real-time, several sources provide live maps and updates. The **National Weather Service** and various private weather services offer detailed forecasts and visualizations of the polar vortex's path and expected impacts. Additionally, daily updated maps with analysis and forecast of arctic stratospheric temperature and vortex position are available from sources like the **DMI Polar vortex and PSCs 2025-2026**.
As the **polar vortex** continues its southward trek, residents in affected areas are urged to stay informed and take necessary precautions. The **Arctic blast** brings not only dangerously cold temperatures but also the potential for severe weather, including snowstorms and high winds. Stay tuned for updates as this weather event unfolds, and always follow the advice of local authorities and meteorologists.
