Credit to SirensFromSouthernIL for finding this, and credit to the news station for the video. In this old news video talking about a tornado in Ripon, there is a short period where a video of an EOWS 812 sounding in alert for the warning.
https://youtu.be/EvZOF-pK38w
Also, for those of you who don't know, the first recording of an 812 was in Burton, KS
https://youtu.be/RwZP5xQZMTY
Both the 812s in Omro & Burton are long gone