Airplanes Punch Holes in Clouds, Make it Rain
Capital of Nasty, an Electronic Magazine - ISSN 1482-0471
Saturday, June 19, 2010 at 20:00 (3847/11)
If you've ever been lucky enough to see a hole-punch cloud form in the afternoon sky, you'd be forgiven for thinking a UFO landed somewhere near by. But according to a new study, the clouds form when much more pedestrian flying objects -- turboprop and jet airplanes -- fly through and change water droplets into ice crystals. When the right conditions are met, these crystals can fall to Earth, either as snow or rain -- sometimes a fair amount of it.
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