Strange Noises Unit

Every day, at around 12:25 pm, we hear a strange noise at work. It's kind of a cross between a howl and a siren, and it lasts for two or three seconds. It sounds to me like it's coming from the office on the other side of the wall from where I now sit, but one of my coworkers who sits nearby says that she was outside one day at that time and heard it very plainly, so she believes it originates from somewhere outside our building.

It's all very odd. I'm old enough to recall hearing a civil defense siren go off each evening at 6 pm in the city where I grew up, but that lasted for 15 seconds or so. We have not been able to come up with any credible ideas as to what the source of the sound might be, or any businesses nearby in Brigham Circle that would have reason to sound off in such a way. We'll figure it out eventually, but it's going to take some time.