Why This Southern Ice Storm Turned Into a Week-Long Crisis

Over 300,000 people have been sitting in the dark for a week across Mississippi and Tennessee, and here's why this storm is so destructive. The ice snapped power poles like toothpicks, but it's the arctic air that moved in behind it and refused to leave that's turned this deadly — a full week of teens and 20s in places where the grid wasn't built for it. At least 69 people have died while National Guard troops go door-to-door checking on folks running out of food and meds. We break down the meteorology behind why some winter storms cause quick damage while others create week-long crises.