Take an umbrella if you're concerned. What is possible is to know with near certainty the rough tonnage of water that will fall across a wide area grain region

Take an umbrella if you're concerned. What is possible is to know with near certainty the rough tonnage of water that will fall across a wide area grain region in an upcoming week. Useful for the reliable production of grain (timing seeding, harvesting, spraying, etc) in the millions of tonnes.