History or Discovery did a great show based on that book. True story - This guy Isaac saw the warning signs but decided not to tell the town, I think.
It was the History Channel that did that special ("Issac's Storm").
I heard about the show based on the book. From what I've read -- true -- he didn't warn others. But ***why** he didn't is the most interesting part. It's told in context by the author. Politics played a large factor in that decision.