ATLANTA (AP) — Millions of Americans from New Mexico to the Carolinas are bracing for a potentially catastrophic ice storm that could crush trees and power lines and knock out power for days, while many northern states all the way to New England could see enough snow to make travel nearly impossible, forecasters say.

An estimated 100 million people were under , warning or advisory on Wednesday ahead of the storm, the ºÃÉ«tv Weather Service said.

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