When is a news alert actually a “News Alert”

I’ve been watching Fox News for the past hour and a half. They have been covering the surprise resignation of George Tenet. Now my question is: What amount of time must pass after a story breaks that it is not considered worthy of a News Alert??
This is ridiculous… A news alert every five minutes is not necessary for something like this that might persist for the duration of the day…
SOMEBODY HELP ME!!!