Originally Posted by
HDQDD
Airline requested GS/GDPs are extremely rare. Usually they're only issued during/after a major storm, outage, or other serious disruption to a hub's operation. (i.e. a thunderstorm sits over ATL for 2-3 hours in the middle of the 5pm bank and the ramp is gridlocked because it's been closed for hours).
Not true
I have had many ground stops to hubs due to volume. Sure this could be aftermath of weather delays which generally happen every other day