I hear you. I know they have our safety at heart. Don't get me wrong, I am just saying that over time, people will get to the point where they may disregard the tornado sirens when the last 50 times they went off, there were no actual tornados.
I am very familiar with doppler radar. I am a retired USAF Navigator with 9600 flying hours. I have hundreds of hours with my face glued to a radar scope.
We don't see or hear those levels here. We have Tornado Watches and Tornado Warnings. If you happen to be watching a local weather channel at the time the tornado sirens went off, they might tell you the source of the warning. If not, all you hear is the tornado sirens going off. I don't know what the answer is, but I do know that never ending warnings with sirens is going to build up a 'resistance' to those warnings.