yesterday. today you're looking at temperatures in chicago only into the upper 30s, and it's that sharp contrast with the hot temperatures, the cold temperatures that fires up this violent weather. >> reporter: a wild ride with rough weather over the next several hours, thank you for the update. jon: we have a massive recall to tell you about involving some of the best selling cars in the country, details on that coming up. and new information on a desperate standoff in alabama, a man kills a bus driver, kidnaps a six-year-old and holes up apparently in an underground bunker. a live report from the scene ahead. it's all "happening now." ♪ [ male announcer ] don't just reject convention. drown it out. introducing e all-new 2013 lexus ls f sport.