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A tornado rips through a field in Minneola, Kansas in 2016. Jason Weingart/Barcroft Media via Getty Images.
- 1 Is There Going To Be A Tornado Today
- 2 Video: Tornado Touches Down In Forth Lauderdale, Florida
- 3 Uk: Tornadoes Are Now Surprisingly Common And No One Knows Why
- 3.1 Fort Lauderdale Tornado: El Niño Creates Conditions Ripe For More
- 3.2 At Least 2 People Killed And Hundreds Of Thousands Without Power After Tornado Spawning Storms Hit The Southeast And Ohio Valley
- 3.3 Multiple Tornadoes Touched Down Across Chicago Area, Near O’hare Airport
- 3.4 Dallas, Texas Tornado
Is There Going To Be A Tornado Today
Share all sharing options: No one knows how a tornado starts, and the mystery can be deadly
Video: Tornado Touches Down In Forth Lauderdale, Florida
Brian Resnick is a science and health editor and creator of the Obscure Podcast about unanswered questions in science. Previously, Brian was a reporter for National Magazine.
Shortly after midnight on March 3, 2020, Mo Odhwani awoke to find his cell phone ringing loudly beside him. The screen told him that a tornado had hit near his home in East Nashville, Tennessee. Such precautions had never been taken before, but he stayed in the garage just to be on the safe side.
What he did was good. About 7 to 10 minutes after the warning, the tornado hit the area with winds in excess of 130 miles per hour. “The whole building started shaking,” said Odhwani, a 32-year-old construction worker. He was afraid that he would not survive: “Is he?” Is that how I came out?
Odhwani was safe, but a local storm claimed 25 lives that night. “Seven or ten minutes is not enough,” he says, reflecting on the little warning he received.
Uk: Tornadoes Are Now Surprisingly Common And No One Knows Why
Tornadoes are one of the most dangerous and damaging weather conditions on Earth. The next day, Odhwani says, “it was like a bomb went off in East Nashville.” “Everything was destroyed.” But those in danger have only a few minutes to protect themselves from winds of more than 250 or even 300 miles per hour.
This is one of the most pressing climate issues. In 2011, the average tornado warning time was about 13 minutes. But as the Washington Post notes, delivery times have increased dramatically in recent years, rising to just 8.4 minutes between 2012 and 2020. Some people are not careful. (Odhwani says he didn’t hear the city’s warning sirens and would have fallen asleep if his phone hadn’t been nearby.) Think: What would happen if you had less than fifteen minutes to prepare for the devastation? ? are you doing ?
The truth is that these warning protocols are an improvement. “If you think back to the ’50s and even the ’70s and ’80s, tornadoes … came out of nowhere,” said Jeff Weber, a scientist at the University Corporation for Atmospheric Research. In 1990, the average delivery time was five minutes.
According to the National Weather Service, an average of 68 people died each year between 1990 and 2019. Tornadoes can cause billions of dollars in damage each year.
Fort Lauderdale Tornado: El Niño Creates Conditions Ripe For More
The lack of progress on hurricane warnings has affected how forecasters have been able to predict more severe weather, including hurricanes. In 2019, the National Hurricane Center’s forecast three days before the storm was more accurate than the forecast one day before the 1990 storm.
When a tornado warning comes out, an actual tornado may not materialize. A large number of tornado warnings issued by the National Weather Service turn out to be false warnings; In some years, the false alarm rate can reach 70-80 percent. Tornado forecasts have not been significantly updated since the 2011 Joplin, Missouri tornado that killed 162 people.
Tornado prediction is clearly an unsolved problem in meteorology. But climate scientists are confident that they can solve this problem.
“I have no doubt that 100 years from now we will have a comprehensive system to warn the public when a tornado hits the sky,” says Weber.
At Least 2 People Killed And Hundreds Of Thousands Without Power After Tornado Spawning Storms Hit The Southeast And Ohio Valley
To do this, scientists must confront these storms head-on and begin to solve the mystery of how they form.
Scientists know that tornadoes are often caused by large, violent thunderstorms, which are very strong storms that spin like small hurricanes. This storm is most common in the central and southeastern United States, where moist, warm air from the Gulf of Mexico meets dry air from the west and western mountains. They are usually formed in spring and early summer.
The problem is that meteorologists can see two very similar large thunderstorms, and only one of them will produce a tornado. Amy McGovern, a climate scientist at the University of Oklahoma, asked: “Why is this strange?” says.
The false alarm rate for tornadoes is so high that forecasters cannot easily predict what a storm will look like.
Multiple Tornadoes Touched Down Across Chicago Area, Near O’hare Airport
Scientists understand the factors that contribute to the formation of superstorms, which produce severe storms.
You need more moisture in the air and wind shear, or a difference in wind speed (what makes a hurricane). They also require atmospheric turbulence, which allows updrafts and updrafts to form, or updrafts that cause the storm to rotate along its vertical axis.
“Each of those can be thought of as four spears … and depending on how many times you hit each other, that determines what kind of lightning and the likelihood of a tornado,” he says. Robin Tanamachi, a hurricane researcher at Purdue University.
The updraft then forces the swirling air to rotate around a vertical axis, creating a storm surface. Vanessa Ezekowitz/Wikipedia
What Is A Tornado? Everything You Need To Know About These Storms
But anything that causes a storm happens on a very small scale—perhaps at the molecular level of the atmosphere—and is strongly affected by local changes. “Even trees can affect the earth’s circulation more than a grassy area” and that can affect the formation of tornadoes, Weber said. Atmospheric conditions that produce tornadoes in Oklahoma do not produce tornadoes in Alabama.
Most storms produce swirling winds that do not cause swirling. “The question we’re trying to solve is how do you take that circulation and concentrate it until it’s thin air that we call a tornado?” says Tanamachi. Meteorologists do not yet agree on the answer to this question.
Tornadoes can form from the ground or vice versa – initially as turbulence on the ground, then it turns into a thunderstorm. “For whatever reason, there may be a small cloud or circulation associated with the thunderstorm,” Tanamachi says. “And now it’s like a player who swings his arms, you know, he swings his arms back and stretches and rotates really quickly.”
But it’s also possible for a tornado to drop from an air cloud — or a combination of the two: “In some cases, both happen at the same time,” Tanamachi says. “Tornadoes appear to form from top to bottom at the same time.”
Dallas, Texas Tornado
Why do scientists not know how tornadoes form? Currently, Tanamachi explains, weather radar cannot accurately capture the rapid low-pressure conditions that lead to tornadoes. “It’s like watching a tornado form in a minute or less and a few hundred meters above the surface, which is a difficult area to track with radar,” he says.
Therefore, any tornado trick—anything that separates lightning from lightning that doesn’t produce lightning—is disguised as a magic trick. The way to improve hurricane forecasting, researchers say, is to confront them head-on.
Hurricane forecasting has improved in recent decades, Weber explains, because scientists have been able to track their movements more precisely. This helps them move more slowly than hurricanes and last for days. “We can take planes into the eye of the storm, fly and collect all the data.”
In contrast, hurricanes are small and short-lived. Scientists studying them have no data to base their predictions on. (Weber jokes that scientists sometimes feel insulted: Storms rarely seem to happen when scientists are on Earth looking for them.) To make matters worse, storms can easily damage scientific equipment. “Any sensors or devices you have are usually destroyed before you can capture everything you want to collect,” says Weber. “That’s why it’s hard to get a complete data set of these events.”
Gaylord Tornado Shows Why Michiganders Should Worry, Experts Say
But this is impossible. Researchers need to do more about hurricanes, Weber says — they need to track them. Scientists are “running and trying to put sensors on the ground ahead of the tornado to determine the path of the tornado.”
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