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The polar vortex is generally an area of low pressure above the Earth’s poles that contains the coldest air. The vortex is more influential during a hemisphere’s winter than in the summer ...
The polar vortex, which is a storm at the jet stream level of the atmosphere, has kept frigid air pent up above the Arctic ... The extreme cold coming directly from the Arctic will produce ...
If the polar vortex weakens or even splits, frigid air pushes southward toward the U.S. 012919-polar-vortex Could we see blackouts: Extreme weather is coming, does that mean blackouts?
Early 2019 North American cold wave. In late January 2019, a severe cold wave caused by a weakened jet stream around the Arctic polar vortex [5] hit the Midwestern United States and Eastern Canada, killing at least 22 people. [3][4] It came after a winter storm brought up to 13 inches (33 cm) of snow in some regions from January 27–29, and ...
A more typical weak tropospheric polar vortex on January 5, 2014. A circumpolar vortex, or simply polar vortex, is a large region of cold, rotating air; polar vortices encircle both of Earth's polar regions. Polar vortices also exist on other rotating, low- obliquity planetary bodies. [1] The term polar vortex can be used to describe two ...
The February 2021 North American cold wave was an extreme weather event that brought record low temperatures to a significant portion of Canada, the United States and parts of northern Mexico during the first two-thirds of February 2021. The cold was caused by a southern migration of the polar vortex, likely caused by a sudden stratospheric ...
The outbreak in mid- to late December heavily focused on areas west of the Appalachians in the Central states. For the Northeast, as well as a large swath of eastern Canada, this will be an Arctic ...
A sudden stratospheric warming (SSW) is an event in which polar stratospheric temperatures rise by several tens of kelvins (up to increases of about 50 °C (90 °F)) over the course of a few days. [1] The warming is preceded by a slowing then reversal of the westerly winds in the stratospheric polar vortex. SSWs occur about six times per decade ...