it all just depends on what siren it is.
the loudest siren currently made for that purpose is the American Signal Tempest 135 or T-135, which produces 135dB at 100 feet. 125-128 dB at 100 ft sirens cover 2.2 to 3.1 square miles, which makes the T-135 a 4 to 1 ratio.
A tornado alarm or tornado siren is a loud siren found in some tornado prone areas that sounds when a tornado warning is issued.
Many tornado sirens are former air raid sirens.
tsunami
If you have the question that relates to how many sirens mean a tornado, the answer is... It kind of depends where you live because I know that some counties in Wisconsin only have one siren and that is the tornado siren so like I said it depends where you live. Another type of siren is the war siren or some people know it as the bomb siren. That means that people are trying to bomb you. And then there is the Wildfire siren. That means get out of the area because a wildfire has started near you, but that is mainly in the southern states like Arizona, New Mexico, and Texas.
I think it starts on E Flat and glisses up to an F sharp.
A tornado alarm or tornado siren is a loud siren found in some tornado prone areas that sounds when a tornado warning is issued.
Many tornado sirens are former air raid sirens.
depends on the siren... but about 4-10kW is average
tsunami
There is a siren that blows in the county that the tornado is in. However, in states such as KS, it will blow also only for a city. The siren last for a couple of minutes.
a siren
Tornado sirens go off when a tornado warning is issued and during their monthly test.
If you have the question that relates to how many sirens mean a tornado, the answer is... It kind of depends where you live because I know that some counties in Wisconsin only have one siren and that is the tornado siren so like I said it depends where you live. Another type of siren is the war siren or some people know it as the bomb siren. That means that people are trying to bomb you. And then there is the Wildfire siren. That means get out of the area because a wildfire has started near you, but that is mainly in the southern states like Arizona, New Mexico, and Texas.
So everybody can here it and quickly get to cover.
No. Many towns and cities do not have any tornado sirens, particularly in areas not prone to tornadoes.
That air raid siren you hear also serves as a tornado warning. The shrieking winds of the tornado will sound like a freight train passing by.
It is loud because police and fire stations want everyone to be safe if a tornado warning in issued. It is basically a warning for people.