I'm a little shaky on my Noah story, but it's my understanding that god was pissed at humans and wanted to get rid of all of them except Noah and his family. If that's the case, rather than having a big storm, why no just "blink" them into nonexistence, kind of like Jeanie?
![](http://www.nostalgiacentral.com/images_tv/jeannie_043.jpeg)