Severe storms and winter weather warnings are creating significant disruptions for holiday travel across the United States. Millions are expected to return home post-Christmas, but the weather may cause heavy rain, snow, and hazardous conditions, particularly in the Northeast, Midwest, and Pacific Northwest. Travelers are facing delays at airports and on roads as storm systems bring rain, fog, snow, and potential ice. The potential for a white Christmas is met with warnings about difficult travel conditions, making it a challenging period for many as they navigate winter weather.