severe in its widespread. norah: the cleanup tonight with millions under flood alerts and millions more facing excessive heat. it has been hot times and more areas will feel that. norah: this cbs evening news starts right now. deadly and destructive floodwaters ravage iowa, minnesota, and south dakota, good evening, i am norah o donnell, thank you for being with us. millions of americans are under threat as rivers continue to rise with some reaching record levels, homeowners have fled to higher ground as they brace for even more rain. the record flooding has reached the rooftops of buildings, cut off entire neighborhoods and shut down roads and major highways. a new two nights, authorities are wanting a key dam in minnesota is in danger of an imminent failure. that is a breach that could lead to a mass evacuation. now all of this as it bakes a dozen states that will feel like 110 in several cities. the thought that news, we have team coverage of the wild weather a