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If this is so affective how big of cannon would we need for say a huricane?
Hail cannons, which cost $40,000 to $50,000 apiece, look like long medieval horns aimed straight up at the sky. Using acetylene fuel, ignited by a spark plug when Doppler radar warns of hail conditions, they emit blasts that send sound waves spiraling 20,000 feet into the sky. The theory – not accepted by everyone – is that moving the water droplets prevents them from freezing into hail.
But is it science or snake oil?
Harold Brooks, a research meteorologist at the National Oceanic & Atmospheric Administration's Severe Storms Laboratory in Norman, Okla., is well aware of hail cannons. They have been used in various forms for more than a century, though there is no scientific foundation behind them.