PITTSBURGH (KDKA) -- When major storms are forecast, the first thought of many is to head out to the store to get whatever is necessary to prepare to hunker down. Many shoppers across the Pittsburgh area raced to their local stores to prepare for what may come.

Millions should prepare for disrupted travel and winter conditions as a fierce storm is set to bring ice, snow and freezing rain to much of the U.S. On the eve of Donald Trump's election certification,

A northwesterly wind flow on Tuesday and Wednesday may bring some lake-effect snow showers to the area at times. Make sure to check the latest forecast before you head out the door. This blast of arctic air will continue through the week and high temperatures will struggle to get to the freezing mark this week and through the weekend.