Originally Posted by
Qwark
It may commence as an ADVISORY, become a CAUTION and then become a WARNING. It unlikely to be an instant WARNING. But could be depending on the aircraft altitude and whether climbing or descending. The alerts are only available for a narrow altitude range.
That's how it should be, i agree but it's not.
It's a warning and is mostly false. Pilots though react to it just to avoid losing their jobs.