A polar vortex collapse is anticipated to plunge the United States into severe cold weather and winter storms similar to those experienced in February. This phenomenon arises from sudden stratospheric warming, wherein warm air disrupts the polar vortex, allowing Arctic air to spill southward. AccuWeather meteorologist Paul Pastelok notes that such disruptions can affect the polar jet stream, leading to unpredictable weather changes. While alarming, NOAA states that polar vortex collapses are common during winter, often resulting in significant travel disruptions and colder temperatures.
A 'polar vortex collapse' involves sudden stratospheric warming, allowing frigid Arctic air to move south, causing severe winter conditions and travel disruptions.
When the Polar Vortex is disrupted - whether stretched, displaced, or split - it can, but does not always, impact this polar jet stream.
The polar vortex exists year-round but tends to weaken during summer and strengthen in winter, leading to extreme weather.
NOAA officials highlight that polar vortex collapses are not rare; they often occur during winter months.
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