This video was filmed back in June 2008. I'm reuploading it because I edited out most of the talking that was in it before. This video does not do justice to how dark the clouds were. I've bought a new video camera, but there hasn't been a tornado warning since.
Part 1
http://www.youtube.com/watch?v=ihxp_TBbd50
Part 2
http://www.youtube.com/watch?v=GonwiDo6ML8
In this video a Federal Signal 2001-SRNB can be heard in alert, but I'm not sure what the other siren is. It does sound like a 2001, but it was not rotating and it was loud from where I was standing and I can't find another siren closer to me besides the 2001-SRNB I can hear.