summary
- So far this year, hail — not hurricanes, floods or tornadoes — has caused the most costly weather damage in the United States.
- Research suggests that large hailstorms will become more frequent due to climate change.
- Next year, scientists are planning the first field study of hail in the United States since the 1970s, and will track hailstorms in the same way they track tornadoes.
Barb Berlin was standing in the garage of her farmhouse near Inman, Nebraska, when she heard a sudden crackling noise.
“I thought it was a gun,” she said.
Then a streak of white appeared, and she realized the sound wasn't a gunshot, but hail.
Fist-sized hailstones pounded on the tin roof of Berlin's garage, and soon others began punching softball-shaped holes in the hood of her Ford Mustang parked outside.
“It was very loud and scary. I prayed a lot,” Berlin said, adding that she was worried about her livestock. “I've never seen hail like that before.”
Hail is a hidden danger: Despite the extreme weather this spring and summer, hail — not hurricanes, floods or tornadoes — caused the most losses in the U.S., according to Gallagher Re, a global reinsurance firm that tracks such data.
And as the planet warms, research suggests large hailstorms like the one observed in Berlin on Monday will become more frequent. A study published last monthThis suggests that the chances of smaller, less damaging hail will decrease.
A study by researchers at Northern Illinois University projects that the frequency of hailstones larger than about 1.5 inches could increase by 15% to 75%, depending on the amount of greenhouse gas pollution humans emit.
Hail occurs when thunderstorms circulate raindrops in the upper layers of the atmosphere, and typically occurs where temperatures are between -22°F and 14°F. Climate change affects hail because warmer temperatures create more energy to push air upwards. In a thunderstorm.
“We expect to see stronger updrafts in the future as the atmosphere becomes more unstable,” said Victor Gensini, a professor of meteorology at Northern Illinois University and lead author of the study.
According to the study, these strong updrafts allow hail to remain in the right places in the storm longer, allowing more ice to accumulate before the hail becomes too heavy and falls to the ground.
“Imagine trying to balance a ping pong ball on an upside-down hair dryer pointing up into the sky,” Gensini said, explaining how updrafts lift hailstones. “Now try balancing a baseball or a grapefruit. You'll need a stronger updraft to…
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Source: www.nbcnews.com
