Hello how may I help you? Can you look something up for me? I can help you with that. I would like to know what the biggest cloud recorded? Do you want to know the tallest, widest or heaviest cloud? Oh, that many choices? The tallest cloud might be interesting. Tallest in the USA or worldwide? In the world might be better. The tallest cloud in the world was 400 feet tal. tall. That's pretty tall. How wide was the widest one? 19 inches wide. That one doesn't sound right. That is what the records show. Can I help you with anything else today?