No single raindrop

Fear reigns supreme as the world fears rain supreme, but years pass without any signs of the disaster repeating.

Atmospheric scientists try for years to piece together what happened, but no explanation is forthcoming.

News trickles out into the world about the inexplicable disaster.

Normally, a portion of this water would fall, scattered, as rain—at most, 6 centimeters of it.The roaring wind whips up the surface of the water into spray.The leading edge of the droplet turns to foam as air is forced into the liquid.That depth is what we call the air’s total precipitable water. Satellites measure this water vapor content for every point on the globe, producing some truly beautiful maps.We’ll imagine our storm measures 100 kilometers on each side and has a high TPW content of 6 centimeters.

No single raindrop

See Copyright.: This only applies to original works of the Federal Government and not to the work of any individual U. state, territory, commonwealth, county, municipality, or any other subdivision. q=soil and water splashed by raindrop&tbm=isch&tbo=u&source=univ&sa=X&ei=l B_JU9zy C6j Y0QWh5IGg Dw&ved=0CCk Q7Ak&biw=1397&bih=986&dpr=0.9This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code. It also does not apply to certain US coins; see The US Mint Terms of Use.Everything within a few kilometers is completely destroyed, leaving a pool of mud down to bedrock.The splash continues outward, demolishing all structures out to distances of 20 or 30 kilometers.At this distance, areas shielded by mountains or ridges are protected, and the flood begins to flow along natural valleys and waterways.

The broader region is largely protected from the effects of the storm, though areas hundreds of kilometers downstream experience flash flooding in the hours after the impact.If it kept falling for long enough, these forces would gradually disperse the entire droplet into rain.Before that can happen, about 20 seconds after formation, the edge of the droplet hits the ground. Right under the point of impact, the air is unable to rush out of the way fast enough, and the compression heats it so quickly that the grass would catch fire if it had time.Fortunately for the grass, this heat lasts only a few milliseconds because it’s doused by the arrival of a lot of cold water.Unfortunately for the grass, the cold water is moving at over half the speed of sound.


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