Question

what are 2 causes for very cold weather in the united states during the winters compared to a decade ago

Answer 1

There’s evidence that as the planet warms, the jet stream could be weakening; add a blast of what’s known as “sudden stratospheric warming,” and the polar vortex can spill out and chill parts of North America. This appears to be what’s turning so much of the country into an icebox.

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