Several of us had some form of the question, "How do I successfully warn an organization about an impending crisis that I foresee but the organization does not?"
The answer is both depressing and freeing: you can't, so don't try. Instead, wait for the crisis to become apparent to the organization and then show up with your ideas for what to do to solve this crisis now—and change things so that the organization CAN see this kind of crisis approaching in the future