This week I made a recording from my window of our system going off in a 2 minute wail for a thunderstorm warning. I was super excited because it only happens every once in a while. Since the siren near me died a minute into wail I decided to catch it in action. It barely was able to ramp down from out of alert after a minute, can't complete a single cycle of wail, and ran only a couple blast of air horn. The air horn bit surprised me a little. It's the first time in about 3 weeks that the system finally sounded off in this tone.
https://www.youtube.com/watch?v=6rAh10_XqAo