Forewarnings are indicators the consequences are near, imperilling the goal. In some stories “Progress” itself is used as forewarnings.
Real World Examples:
1. The increasing number of people moving out of Southern California in relation to a real-estate crash
2. Finding a rising number of eraser marks all over the book keeping of a company’s monthly figures
3. A steady and rapid decline in the stock price of a small company
4. The decreasing rate of house painting by a man tired of his marriage, etc.
From the Dramatica Software