Snow, sleet and ice hit the Tri-State Area on Saturday, and now the cleanup is underway before things freeze over.

Parts of the Northeast are waking up to more than a foot of snow Sunday morning, as a fast-moving winter storm, packing snow, sleet and ice, leaves more than 15 million people from the Midwest to the Northeast under winter alerts.

Storm Freya, three more storms are in the forecast through late next week, some of which will hit similar parts of the Northeast, Midwest and Plains. Here's what you need to know.