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Hailstorms are one of Australia’s most costly natural disasters and new research suggests that they are becoming more frequent in some of Australia’s largest cities. What is hail? Hailstones are made of layers of ice which form in thunderstorm updraughts. Hailstones grow larger by colliding with other rain droplets and ice particles in the updraft, until they become too heavy to remain suspended in the air and fall to the surface. There are several ingredients required for large or giant hailstones to form; Sufficient supercooled liquid water in the atmosphere. A very strong updraught all...

EPA Researchers Are Providing Tools And Resources To Prepare Communities For Climate Change And Extreme Storms By U.S. EPA Each season brings expected changes to the weather. But with climate change and the warming of the atmosphere, weather patterns are becoming less predictable with more heat waves, and increased severity of super- and local- storms.  EPA scientists are investigating the increased occurrence and intensity of extreme precipitation events, which are defined as days with precipitation in the top one percent of all days with precipitation, according to the U.S. Global Change R...