Yes, but if the forum more than 700,000 users, not to look at all the profiles to see whether anyone issued a warning for example per day? Perhaps there is some kind of log?
P. S. Sorry for my English.
There is no log of warnings given visible on a whole. You would need an add-on. Each content shows a warning has been issued when viewed (posts show "View Warning" instead of "Warn") and only one warning per content is permissible.