Disruption to winds above Arctic threatens to alter weather patterns across parts of continent in coming weeks
The stratospheric polar vortex over the northern hemisphere is facing the prospect of an unusually early weakening. Forecast models suggest it could weaken significantly over the next 10 days, when it would typically be strengthening.
A major sudden stratospheric warming (SSW) event is possible. This could influence weather patterns in the following weeks, increasing the likelihood of persistent areas of high pressure across the mid-latitudes and colder conditions weeks later.
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