RENEE MONTAGNE, HOST: Here's a phrase we don't get to say that often, snow in El Paso. Over the weekend, a blizzard struck college football's Sun Bowl there. Early this morning, the temperature in that city on the Mexican border was 27 degrees.</s>STEVE INSKEEP, HOST: El Paso's experience was just one sign of severe weather across the South. Brian Hothe (ph) is tracking it all.</s>BRIAN HOTHE: The room I'm sitting in is full of computers and televisions. And I can view the weather across the entire country.</s>STEVE INSKEEP, HOST: He's on the overnight shift at the National Weather Service office in Fort Worth, Texas.</s>BRIAN HOTHE: We had power outages, roads just impossible to drive on, stranded cars. So it was - it was a very, very intense storm system.</s>STEVE INSKEEP, HOST: And this Monday after Christmas will be a day of dealing with the aftermath.</s>BRIAN HOTHE: The actual weather over those areas is - is improving. But the impacts are going to remain really bad across those areas because of - the temperatures are not going to get above freezing.
Since the end of last week, there has been a rash of tornadoes across the southern part of the U.S. Is El Nino To blame?