I have long wondered about this. On the day I drew this, it was a Friday and I had been sitting at a light when the tornado sirens went off. No one seemed to think anything about it. If it had been a real emergency, I don’t know how long it would have taken us to realize that.
This was based on an actual sign seen at a gas station near my house. Wind plays havoc with our signs around here (and everything else). I was surprised, though. how long it took them to correct the error.