This site has instructions to sign up for safety notices and posts the notices for the general public.
https://dps.osu.edu/alert-notices
Here are some of the safety resources for students.
Most universities have similar services, so sign up wherever you attend/visit.
If you are in the Columbus area, Columbus Police Department has an app Columbus Police Launch Mobile App
CPD has a web portal with a map feature search function. University District (off campus area just east of High St) is in Zone 4, Precinct 4, District 44.