Hello how may I help you? I want to know what the loudest recorded sound ever was okay checking Okay. I'm guessing it was louder than a whistle yeah Was it louder than a siren? it was a volcanic eruption in 1883 Wow really. I would have never guessed that. How loud was it? it ruptured the eardrums of people 40 miles away from it Wow. Horrible and amazing at the same time. yeah sure it is Thanks