Hello how may I help you? I need some info related to World Records sure, I can help you with world records. I need to find out what the single biggest cloud is in recorded history of all time can you specify is it the tallest? or widest ? or heavist? Just the biggest biggest cloud ever record is 1940 the cloud was cover all africa, Oh thank you! thank you. are there anything I can help you? Nope thank you. have a good day.