Hello how may I help you? hello, can you please check what is the biggest recorded cloud of all time Yes, I can do that. Do you mean tallest, widest or heaviest? great, can you check both please? Would you like physical cloud or the internet cloud? physical of course Ok, one second while I check our database. sure, take your time Looks like the widest cloud ever recorded was 300 miles long. is there any specific name for that cloud? It was a cumulus cloud. great thanks