As a lifelong midwesterner I don’t need sirens, the internet, TV, radio, or low frequency sound to warn me about a tornado. If it’s “green” outside I’m heading down to the basement.
Where it’s probably more useful is for places like the northeast, where we typically will have a tornado warning or two a year. They aren’t the storms of myth and legend you find in the midwest, but they do cause damage and can kill people. For a population who aren’t as attuned to the signs of tornado formation, external signals from experts can be useful.
The deadliest tornadoes are in the middle of the night in the midwest.
I agree. Tornado weather is very apparent. But it is really cool that there's a new method to detect them.