synchronized traffic lights. the city has synced up 4,500 traffic signals across 470 square miles. there are 7 million people on the roads at peak rush hour times. still to see if this is going to work. our weather forecast. spring was warm and now not anymore. jennifer delgado, explain what's going on here. >> for today we are talking about spring showers out there. look at the radar here. it is lighting up across parts of the south, from texas through louisiana, getting pounded this morning. it was a rough overnight, where we saw reports of softball-sized hail. what we're going to be looking at is rain across the deep south. we're talking potentially some of these storms could become stronger later in the day, but much of the lightning offshore, and we're also looking at the chance for just a little bit of snow to set up right near the texas panhandle. as we go through today as well as through friday, we're talking potentially flooding problems. three to five inches for areas just to the north of new orleans, and then for florida,