Beat me to beating me to it

Assuming a quantity of water larger than would evaporate on entry, residual water would first hyper-charge existing cloud formations as well as create new cloud formations, resulting in intense rain or snow storms across the planet. These clouds would create new weather patterns across the globe, eventually resulting in the hydration of most of the planet's deserts. New flora and fauna would thrive in areas such as the Gobi and Sahara deserts. On the downside, the increased planetary saturation would result in elevated ocean levels, submerging many existing coastal regions.