We typically expect a rainfall of only six inches per hour from a category Five
hurricane, to flood the earth in 40 days would require a rain fall six inches per
minute. If it came from below what about the noxious gases, such as sulfuric
acid, that would make their way into the atmosphere and cause the earth to
become uninhabitable.The heat generated by the impact of the rain drops on
the flood surface would have been more than sufficient to boil the water and
prevent it from rising.