As of now, whenever you make a warning to a post/thread in a certain section, the only moderators that can see it are the sectional moderators. With the site and global admins being busy, it's hard for warnings to be heard, not to mention issued.
So, this means, for example, If I were to make a warning in the Ace of Spades section, USABxBOOYO, being the only person active, couldn't do anything about it. So it could take a while for a warning to be issued! A bummer, right?
I believe all moderators, sectional or not, should be able to see all the warnings made from every section.