Forecasters called travel conditions "extremely treacherous" and "nearly impossible" in areas hit hardest by the storm, and air and train traffic is at a standstill in many parts of the region.
As people travel for the holiday weekend, much of Northern California is under a winter storm watch, with communities bracing for several feet of snow.
Three Texas siblings who died in an icy pond are among several dozen deaths in U.S. states gripped by frigid cold. A massive storm dumped deep snow across more than 1,300 miles from Arkansas to New England.
Bad weather can derail even the best-laid travel plans. When that happens, U.S. airlines must provide refunds for canceled flights. If winter weather is expected, airlines might also allow you to postpone your trip without fees.
Several counties in North Georgia are under a winter storm watch. But experts are warning people to watch current forecasts in case the storm moves further south toward Atlanta and beyond.
A 'bomb cyclone' is intensifying severe winter weather for millions of people across the U.S. The system is expected to knock out power and disrupt holiday travel.
A powerful winter storm is impacting parts of the U.S. with major snowfall, ice, and below zero wind chills. The conditions are disrupting holiday travel and could last through next week.
The storm will spread through the Midwest and Great Lakes regions over the weekend with "widespread heavy snowfall and hazardous travel conditions," the National Weather Service said.
Break out those shovels, because storms are about to dump a mess of snow and ice on a large part of the U.S. As of noon Tuesday, at least 20 states were under winter warnings or advisories.