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When the polar vortex is strong, the mid-latitude Westerlies (winds at the surface level between 30° and 60° latitude from the west) increase in strength and are persistent. When the polar vortex is weak, high-pressure zones of the mid-latitudes may push poleward, moving the polar vortex, jet stream, and polar front equatorward. The jet ...
Several frigid days in Rochester in January were attributed to an intrusion of arctic air caused by a weak polar vortex. — Steve Howe reports on weather, climate and the Great Lakes for the ...
Climate researchers found that a weakening in the Antarctic polar vortex, a "band of cold air and low pressure that spins in the stratosphere around each pole", was the primary cause of the heat wave.
Another player in the winter forecast is the polar vortex. Based on data from previous winters with a similar setup to the upcoming season, Pastelok said that February is the most probable time ...
Late in 2020 and early in 2021, AccuWeather meteorologists warned that a weakening of the polar vortex was coming and a major southward discharge of cold air would follow during the second half of ...
Brutal winters may be in store for the portions of North America as the polar vortex continues to weaken and shifts, according to a new study. Weakening polar vortex may yield longer, harsher ...
In minor warmings, the polar temperature gradient reverses but the circulation does not, and in final warmings, the vortex breaks down and remains easterly until the following boreal autumn". [3] However, this classification is based on the NH SSWs, as no major SSW by this definition has been observed in the SH in winter.
AccuWeather forecasters break down the science behind the polar vortex and how it can influence the weather for locations thousands of miles away. While the name for this phenomenon may sound ...