A strengthening bomb cyclone barreled across the northern U.S. on Monday, unleashing severe winter weather in the Midwest as it took aim at the East Coast.
With millions of Americans traveling during the holiday week, winter weather could disrupt travel as a dangerous post-holiday storm sweeps across the Northern Tier.
Several states were under weather warnings or advisories after the same winter storm battered the Upper Midwest over the weekend. Tens of thousands of power customers faced outages.
