Arctic blast, Northeast snow snarl U.S. travel

A weekend winter storm plunged temperatures well below zero across the Midwest and brought the season’s first significant snowfall to parts of the Northeast on Sunday, Dec. 14, 2025, while the Pacific Northwest—already hit by catastrophic flooding—braced for more rain and wind. The National Weather Service said about 63 million people are under cold weather advisories and 11 million under freeze warnings, with states imposing speed limits, cities plowing roads, and airlines reporting more than 1,000 delays and 100 cancellations.