For those who have been through furloughs before:

Are airlines likely to give any indication of how much they want to cut staffing before they announce furloughs?

For example: Say I'm 1500 from the bottom and my company is offering long term leaves of absence. I have a chance to find another job but I'm better off continuing to fly for my airline if I can. If the company says they need to shed 1500 pilots via furloughs + leaves of absence, I would probably stay and take my chances that other pilots taking leave will save me from furlough. If the company says they need to shed 3000 pilots I would probably want to take a leave asap and get a head start on finding a job since I know I'm almost certain to get furloughed anyway.

When they've furloughed before have the airlines given any kind of heads up about staffing along those lines? Or was everyone in the dark until they said they were going to furlough X number of pilots?