more than 230 million americans are facing extreather. in chicago, it hit 23 below zero. there's children out in this weather. people who went outside had to cover every inchf o skein. lake michigan and the chicago river are frozen. the good news, temperatures will be on the rise over the weekend. >>> we've seen a lot of school delays and closings this week, aswell. >> students at falls church will be back in warm class this morning, after starting the day yesterday with no power. it was 15 drees when classes started yesterday. and studentith said it was pretty unpleasant sitting in the frigid rooms. >> i saw people come to schoole with blaand really big coats. yeah. >> a lot of people were saying, it's tooo ridiculous be here. they want to text their parents and go home. >> falls church chose to continue classes because they didn want to dismiss students into the they were monitoring the temperatures. the power came back around midday. >>> back to the breaking news in montgomery county. dozens of firefighters bated this house fire in potomac the other night. the fire has