Ice Storms in Texas, Snow in Malibu, and T-Shirts in Central Park

Winter was weeks late in New England this year and Southern California had an unseasonable heat wave until the first of this week. Yesterday, snow fell on Malibu. Texas and Oklahoma are among the nine states where ice has closed roads and cancelled air travel in places where that doesn't usually happen. What's going on with the weather? Meteorologist Dennis Feltgen is at the national office of the National Weather Service.