Supposedly, this was how life on Earth began, a goliath of a rainstorm. The only one that could compare was estimated to be the rain right after when the ancient Earth warmed up several billion years ago.
On Earth, when daily precipitation is over a hundred millimeters, it is classified as heavy rain. Anything beyond 250 millimeters was classified as violent rain but this time, the Earth's precipitation rate was over 10 times of that. With the heavy downpour of rain, as if it was spilled from the sky as the muffled sound of rain hitting the icy layers was heard around the world. As time passed, the intense rain showed no signs of weakening. It actually began increasing its intensity and showed no signs of stopping.