Sirens heard in Aurora, CO for Tornado Warning

[kswx29]

http://www.youtube.com/watch?v=0GpUFFJNFH8
They seem to be doing Wail...

[Robert Gift]

A little information: date, location, time, etc. would be nice.
Was this their false alarm last Thursday at 7 p.m.?
Perfect record! Three activations in three years, all false.
These are Whelen electronic sirens. Aurora has 41.

[kswx29]

A little information: date, location, time, etc. would be nice.
Was this their false alarm last Thursday at 7 p.m.?
Perfect record! Three activations in three years, all false.
These are Whelen electronic sirens. Aurora has 41.

I didn't make the recording...how would i know all of this infomation??

[Robert Gift]

Perfect record! Three activations in three years, all false.
These are Whelen electronic sirens. Aurora has 41.

I didn't make the recording...how would i know all of this infomation??

I was referring to the guy, (kiddie?) who recorded it.
Eric, recordist, said last Thursday, 7 p.m. 80015
Aren't most tornado warnings go up to steady pitch for 5 minutes, then descend to off? These E-sirens go up and down - which I think is far more noticeable.