>>12336985The closest we've ever had global rain like this was during Noah's flood in the Bible.
In the scripture, it states that it rained for 40 days and nights, but for this amount of rain to cover the entire globe and raise the water level so that only the summit of Mt. Ararat peaked above it, would have to be an incredible amount of falling water indeed.
Mt. Ararat elevation: 5137 metres
Surface area of Earth's oceans: 608.83 giga-metres square
So to raise the sea level by 5137 metres would require
(608.83 * 10^9) * 5137 = 3127559710000000 litres of water
Even with a time period of 40 days or 3456000 seconds, that would be 904965193.865 litres of water per second of rainfall. With a calculation like this it is clear that the rains mentioned in the scripture were cataclysmic deluges of water and not everyday rain. Each square kilo-metre of Earth's surface would be receiving almost 1/10th of a litre of water per minute!