Hello how may I help you? i have a question Sure go ahead please. what is the biggest recorded cloud of all time? Can you please tell me if you mean the tallest or the widest or the heaviest? widest Do you mean in the US where you are located or in the world? all time in world Did you mean gray clouds, white clouds, or any other type of color cloud? anything Okay the biggest cloud is the Sonamada Cloud in 1919.