The Bible references the fountains of the deep and forty days of rain as contributors to the global Flood. Magmas are ideal candidates for fountains of the deep since water is the primary gas released during virtually all volcanic eruptions. The geologic record preserves volcanism on a level not observed today, especially with the existence of large igneous provinces. Gravimetric analysis of large igneous provinces indicates the liberation of water from their magmas could have contributed at least 58 cm of rain worldwide every day for forty days. Diatremes could be signature structures for volatiles launched into suborbital trajectories. The possible cause of the volcanism, Flood, and forty days of rain could have been concentrated, global decompression due to multiple bolide impacts. Under the scenario of global decompression from bolide impacts, the forty days of rain came from four potential sources: (1) liberation from volcanism, (2) destruction of vapor canopy, (3) vaporization of existing liquid water upon bolide impact, and (4) vaporization of bolides.