Gen

Gen 7:11-12

11 It was the six-hundredth year of Noah's life, in the second month, on the seventeenth day of the month that it happened: all the underground springs erupted and all the windows of Heaven were thrown open. 12 Rain poured for forty days and forty nights.    

The Earth belongs to God so even though Satan was managing it this still happened so it is possible that it could happen again!