Hello how may I help you? I want to know world records Sure, but Can you be more specific? There are a lot of then what is the loudest recorded sound was? It was a nuclear explosion during the Manhattan project in Utah. 35980, decibals do you have more information on this? for how loud? Yes, it was 35980 decibels, which can be heard 900 miles away thank you for your help. No problem. Anything else? that's all thank you. Bye for now