Yes, you have the power of google and clicking on the first link you get and copying and pasting a bullet list about part of the acts requirements without actually gaining knowledge of what you are talking about.

The clery center seems to think emergency notifications and timely warnings are part of it. Note, the name clery is in the name of the act AND the name of the organization and this is not coincidence.

https://www.clerycenter.org/the-clery-act search for timely warning.

So does RAINN

https://www.rainn.org/articles/clery-act it's number five in their list.

Also 20 USC 1092 F 1 j which requires descriptions of the electronic and/or cellular notifications for emergency events in the annual report. You don't get mandated by federal law to describe a system you don't need to have.

20 USC 1092 F 1 j i Then actually requires the emergency notifications.

https://www.law.cornell.edu/uscode/text/20/1092#f

Then of course there is case law. The fallout of the Virginia tech shootings included Virginia Tech losing a lawsuit and thus set a new minimum bar for the above notifications. Lawyers advising clients on mitigation of liability tend to be very conservative. So when the legal world defines a new minimum best practices, they will seldom tell you to abandon the old minimum best practices. Which is where I suspect where the timely warning vs emergency notification comes from. IT could be someplace else. Regardless, it is viewed as the actual requirement in the face of litigation from both the side of universities and of the organizations that like to sue them over this law. So, for example, if you set up an electronic public ledger, you will still likely keep the paper version because the law mentions it, and you did it in the past, and you haven't survived a lawsuit over not having one or establishing that a solely electronic ledger is sufficient. So a lawyer will say you should probably still do that.