I wonder if the 2T22 is actually part of the footage, or they just dubbed one in. Really sounds sweet.

Welcome to the board! I'm from the suburbs of Chicago.

They weren't installed until after the accident. Actually it was that accident that required nuclear power plants to have warning systems.

Happy to finally see a good recording of a siren that is WAY over filmed. I hope this is the last video though lol.

They changed the Cyclone on the pole with different generations. This particular one seen in street view is one that looks like a standard Cyclone 125, except it has a disc around the bottom which they were using to see if it would improve distance. I will try and find the photo of it.

Sorry for this big bump...not sure if anyone was aware of this, but updated street view imagery in September 2016 shows that the Sirex No. 10 is sadly gone

Again, sorry if I am bringing up information already known, but I don't recall hearing about it being gone before.

It is a Decot Engineering Two-Tone siren.

What's the name of the power plant with the 1000T heard in your other video?

Ive been trying to find the weather channel link for a long time! Hopefully someone has it.

On a school trip to Springfield I went to in 2013, I saw that exact same Thunderbolt. I came to learn that it was taken down shortly after like you said. I took a picture of the siren when I saw it, but I will have to pull it up. In addition, there is also a cool picture of when it was first install...