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The polar vortex is not synonymous with a cold snap. In fact, the stratosphere is 10 to 30 miles above the earth’s surface and above the polar jet stream and other systems that create most ...
The polar vortex is a large area of low-pressure and cold air surrounding both of the Earth’s poles, according to the weather service. It always exists near the poles.
Beginning on January 2, 2014, sudden stratospheric warming (SSW) [dubious – discuss] led to the breakdown of the semi-permanent feature across the Arctic known as the polar vortex. Without an active upper-level vortex to keep frigid air bottled up across the Arctic, the cold air mass was forced southward as upper-level warming displaced the ...
The polar vortex is extensive coverage of low pressure and cold air surrounding Earth’s poles. When the vortex is strong and stable, the polar jet stream shifts northward, keeping the cold air ...
"A shift of the polar vortex will be at the heart of the brief cold blast in the Northeast," AccuWeather Chief On-Air Meteorologist Bernie Rayno said. In this case, a small lobe of the feature ...
The stratospheric vortex's SSWs were discovered in 1952 with radiosonde observations at altitudes higher than 20 km. [3] The tropospheric polar vortex was mentioned frequently in the news and weather media in the cold North American winter of 2013–2014, popularizing the term as an explanation of very cold temperatures.
The polar vortex, which is a storm at the jet stream level of the atmosphere, has kept frigid air pent up above the Arctic Brief visit from polar vortex to bring record-challenging cold to ...
The cold was caused by a southern migration of the polar vortex, likely caused by a sudden stratospheric warming event that occurred the prior month. Temperatures fell as much as 25–50 °F (14–28 °C) below average as far south as the Gulf Coast.