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See current wind, weather, ocean, and pollution conditions, as forecast by supercomputers, on an interactive animated map. Updated every three hours.
The polar vortex is in the polar stratosphere, above the layer of the atmosphere (the troposphere) where most weather, including the jet stream, occurs. NOAA Climate.gov graphic. The stratospheric polar vortex forms in the winter hemisphere when the Earth’s pole is pointed away from the sun.
The animation above depicts the weather system’s bone-chilling journey across the country as the spinning expanse of Arctic air known as the polar vortex bulged south before righting itself and...
Visualizations like this help climate scientists at NOAA and elsewhere see the movement and fluctuations in the polar vortex that has been affecting weather patterns in the Northern Hemisphere this winter.
Oscillation (AO) and Polar Vortex (PV). This analysis is intended to provide researchers and practitioners real-time insights on one of North America’s and Europe’s leading drivers for extreme and persistent temperature patterns. During the winter schedule the blog is updated once every week. Snow accumulation
The polar vortex extends from the tropopause (the dividing line between the stratosphere and troposphere) through the stratosphere and into the mesosphere (above 50 km). Low values of ozone and cold temperatures are associated with the air inside the vortex.
Interactive world weather map. Track hurricanes, cyclones, storms. View LIVE satellite images, rain radar, forecast maps of wind, temperature for your location.
The latest forecast says a major disruption of the polar vortex is on its way, but the stratosphere has been acting up for a while. Our bloggers explain what it might mean for U.S. weather.
The Arctic polar vortex is a band of strong westerly winds that forms in the stratosphere between about 10 and 30 miles above the North Pole every winter. The winds enclose a large pool of extremely cold air. (There is an even stronger polar vortex in the Southern Hemisphere stratosphere in its winter.)
The polar vortex is a large area of low pressure and cold air surrounding both of the Earth’s poles. It ALWAYS exists near the poles, but weakens in summer and strengthens in winter. The term "vortex" refers to the counter-clockwise flow of air that helps keep the colder air near the Poles.