HARTFORD, Conn. – The workweek opened with a white-knuckle ride Monday in the snow-clobbered Northeast as drivers encountered unplowed streets, two-lane roads reduced to a single channel and snowbanks so high it was impossible see around corners.

Schools remained closed across much of New England and New York, more than 130,000 homes and businesses still were waiting for the electricity to come back on after the epic storm swept through Friday and Saturday with 1 to 3 feet of snow that entombed cars and sealed up driveways.

The storm was blamed for at least 15 deaths in the U.S. and Canada, and officials warned of a new danger as rain and higher temperatures set in: roof collapses.