A Split in the Polar Vortex means Cold Weather for the West Coast, but Warm Weather for the Arctic

The polar vortex has divided into two sections, allowing warm air from the northern Pacific ocean to extend into the Arctic, while displacing cold Arctic air south along the west coast. While the resulting forecast means that the east coast will see milder temperatures in the coming weeks, it also calls for colder than average temperatures in the west, and yet more above-average warmth in the Arctic, already suffering from record-low sea ice levels.

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