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