Here’s how not to start your novel.
One or more of the characters is acting like a lunatic because she’s so frantic about something she doesn’t mention.
Dire language about a vague disaster is used.
The other characters and the pace are as frantic.
Then all this drama proves to be about a minor problem, or one that is such a problem that the overkill of the scene would be best replaced with one that is considerably more informative and that lets the gravity of the situation speak for itself.
Drama queen opening scenes simply don’t work because the reader realizes she’s been fooled which may make her put down the book or she won’t trust you when genuine disasters happen.
Often, too, the drama queen scene proves to be unintentionally funny which can set the wrong tone for the novel.