Do you put up anything when ID'ing a dangerous situation like "RUUUUUN!!!" or similar? Maybe a more serious idea would be to give some sort of visual indication of danger vs loading some text to read that says it's dangerous.
If i have learned anything about UX, it's that 1) people don't read, 2) people also don't read, and 3) if you have something important to tell them, don't make them read.
What that leaves you as options is pretty limited.