Tsunami Sirens in CNN Video

[Alasiren1977]

Im not sure if this has been shown on this board before, but I thought it was nice to see the sirens in action in an actual Tsunami Alert. Im not sure what kind of siren it is but it sounds really good, and would scare me to death if I were by the ocean.

http://www.youtube.com/watch?v=381vqwFhXiE

[Charlie Davidson]

Im not sure what kind of siren it is but it sounds really good, and would scare me to death if I were by the ocean.

http://www.youtube.com/watch?v=381vqwFhXiE

I'm pretty sure that is a Federal Signal SD-10 siren. There are some videos of those sirens on YouTube.

IMO those are some pretty scary sounding sirens.

[jkvernon]

Crescent City actually has a non-rotating ACA Allertor.

http://media.npr.org/programs/morning/f ... 00_150.jpg

[carexpertandy]

Crescent City actually has a non-rotating ACA Allertor.

http://media.npr.org/programs/morning/f ... 00_150.jpg

Is the rotator broken, or is it before Allertors had rotators?
It has a round base.

[holler]

Crescent City actually has a non-rotating ACA Allertor.

http://media.npr.org/programs/morning/f ... 00_150.jpg

Is the rotator broken, or is it before Allertors had rotators?
It has a round base.

It's a normal Allertor, and they all had rotators. The rotator on this one has been disabled so the siren will direct it's sound into the more populated areas and not out to sea. They also have an STH-10 down by the harbor.

BTW isn't this the siren that Ed Wise restored?

[cmoore]

That siren could have been a SD-10 or a FS Model 5/7T. With is being in Cali, it was probably an SD-10

[Adam Pollak]

That siren could have been a SD-10 or a FS Model 5/7T. With is being in Cali, it was probably an SD-10

It's the Allertor going off. Most Allertors have the SD-10/5T sound.

[holler]

That siren could have been a SD-10 or a FS Model 5/7T. With is being in Cali, it was probably an SD-10

You can see the horn of the allertor at the end, and just like Adam said, it sounds just like an SD-10/5T since it has the same 9/12 port ratio.

[Daniel]

That siren could have been a SD-10 or a FS Model 5/7T. With is being in Cali, it was probably an SD-10

There is a photo of the Allertor in Crescent City shown above. On the building next to it is the hornless Thunderbolt it replaced, which was also fixed to point toward the ocean. From the position of the playground shown in the video, the STH-10 should have been audible as well.

There is only one SD-10 in far northern California, in the tiny village of Tennant on the side of Mount Shasta.