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How the polar vortex and warm ocean intensified a major US winter storm

By Mathew Barlow, Professor of Climate Science, UMass Lowell
Judah Cohen, Climate scientist, Massachusetts Institute of Technology (MIT)

A severe winter storm that brought crippling freezing rain, sleet and snow to a large part of the U.S. in late January 2026 left a mess in states from New Mexico to New England. Hundreds of thousands of people lost power across the South as ice pulled down tree branches and power lines, more than a foot of snow fell in parts of the…

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