"Rainfall rates" refers to the amount of rain that falls in a specific amount of time. It measures how quickly or slowly rain is falling from the sky. Full definition
There has already been a 20 % increase in rainfall rates for the top 1 % of storms since 1958. (earthtimes.org)
In this problem set, students learn about rainfall rates and how to convert them into the volume of water that falls. (nasawavelength.org)
Secondly, with warmer air temperatures, rainfall rates near the heart of the hurricanes of 2100 will be 20 % higher - increasing the potential for flooding. (earthtimes.org)