Winter Storm Gianna could turn into a powerful nor’easter this weekend, bringing snow, strong winds, and coastal flooding risks to the East Coast. The storm’s path remains uncertain.

Heavy snow, ice and brutal cold are expected to make this winter storm a potentially life-threatening weather event, stretching across two-thirds of the U.S.

Behind the winter storm itself, Arctic temperatures could freeze snow and ice, potentially creating long-duration power outages and paralyzing travel for days.

Follow as a winter storm is expected to bring heavy snowfall, icy roads and cold temperatures from the southern states to the Northeast.