A winter storm is expected to bring snow, sleet and freezing rain to a large swath of the Midwest and Northeast Wednesday and Thursday, potentially causing treacherous travel conditions and power outages for millions of Americans, forecasters say.
According to AccuWeather, warm, humid air from the south will collide with arctic air from the north as a low-pressure system moves east — atmospheric ingredients that could trigger accumulating snow and dangerous ice along its northern edge.
"As the mild air mass clashes with frigid air farther north, the ingredients for a major ice storm are expected to be in place beginning Wednesday across a zone spanning from the Midwest to the Great Lakes," AccuWeather meteorologist Brandon Buckingham warned.