A polar vortex is a large cyclone near either of the poles. It can also be called a polar cyclone, a polar low, or a circumpolar whirl. Polar vortexes are located from the middle of the troposphere to the stratosphere. Polar vortexes hover over the poles year-round and are strongest in the winter. An individual vortex can last for more than a month! Recently a polar vortex breakdown has occurred and caused polar vortexes to move down south from the North Pole. This is why it is so cold outside right now. Whenever a polar vortex breakdown happens, we get very cold temperatures. A polar vortex breakdown can happen a few times a year but it affects different places. I think polar vortexes are really cool...literally.
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