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The original was posted on /r/explainlikeimfive by /u/QuestionsToPonderOn on 2023-09-29 17:56:54.

Since i was young ive never understood how rainfall is measured in inches. I’ll hear in the news that were expected to see 2-3 inches of rain per hour (currently in the middle of a brutal storm). How is this determined? Wouldnt inches all be determined by the size of the “container” or the locations terrain, rather than the amount of rainfall. Thank you