Hello how may I help you? Hello? I am looking for some information What info? Can you tell me what the largest cloud on record was? Do you mean tallest, widest, or heaviest? I mean - if measured by feet, in any direction, which was the largest recorded? Do you mean widest in the country or in the world? The world, please The widest cloud was spotted over Argentina at 393,330 feet long Holy...wow. That's hard to imagine. Thank you Welcome!