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The New Tornado Alley Has Been Hyperactive this Year

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Monday, April 21, 2025

The New Tornado Alley Has Been Hyperactive this YearMore tornadoes than usual have already struck the U.S. in 2025—and many of them have been touching down farther east than they had in the pastBy Mark Fischetti edited by Dean VisserEF2 tornado lofting debris from a home in Lockett, Texas. Jason Weingart/Getty ImagesBy last Saturday, the National Weather Service reported that 552 tornadoes had occurred in the U.S. this year—well above the average total of 337 for the period of January through April in 1991–2020. Then an outbreak struck Texas and Oklahoma on Saturday night, killing at least three people. Parts of those two states were at the center of the twister-prone “tornado alley” for most of the 1900s, but this well-known corridor has been shifting steadily eastward in the past three and a half decades. This year many of the touchdowns that caused deaths occurred in Mississippi, Alabama and Tennessee, all east of the old alley.In 2023 Scientific American created a map, based on a then new extensive study to show the shift in large tornado outbreaks.Daniel P. Huffman (map); Source: “Examining the Changes in the Spatial Manifestation and the Rate of Arrival of Large Tornado Outbreaks,” by Niloufar Nouri and Naresh Devineni, in Environmental Research Communications, Vol. 4; February 2022 (data)On supporting science journalismIf you're enjoying this article, consider supporting our award-winning journalism by subscribing. By purchasing a subscription you are helping to ensure the future of impactful stories about the discoveries and ideas shaping our world today.Why does the U.S. have so many tornadoes?Far more tornadoes strike the U.S. than any other country, and this is because of its geography. Wet, westerly winds from the Pacific Ocean become dry as they pass over the the Rocky Mountains, then become high and cool as they blow farther east. Meanwhile warm, humid air streams northward from the Gulf of Mexico, moving at a lower elevation. Flat terrain along these paths allows the two streams to run into each other. The angles at which they collide tend to create unstable air and wind shear—two big factors that favor tornado formation.Where has tornado alley moved?For decades, most of the largest outbreaks occurred across northeastern Texas, eastern Oklahoma, and western Arkansas and Missouri. But between 1989 and 2019, the focus shifted eastward by 400 to 500 miles, covering western Kentucky and Tennessee plus northern Mississippi and Alabama.Why is tornado alley sliding eastward?Most tornadoes are created by a supercell—a strong thunderstorm with a rotating updraft of air. Supercells tend to form when warm, humid, low-level air interacts with cool, dry, higher air. And climate change is now generating more of that warmer, moister air. Tornadoes also are more likely to develop when the local atmosphere is unstable, and warming increases instability. Climate change is warming the Gulf of Mexico as well, and this can send generous amounts of water vapor into the southeastern U.S.—farther east than it tended to travel decades ago. In addition, climate change has moved the rough north-south boundary between dry western U.S. air and moist, eastern U.S. air about 140 miles to the east.Why does the shift matter?Tornado shelters are common in Texas and Oklahoma but less so in other U.S. regions. The Southeast is more densely populated, and mobile homes (which often fare poorly in windstorms) are prevalent. Tornadoes in the Southeast also occur at night more often than those that strike farther west do, in part because winds can bring ample moisture from the Gulf after dark. And nighttime makes it much harder to see a storm coming.VIDEO

More tornadoes than usual have already struck the U.S. in 2025—and many of them have been touching down farther east than they had in the past

The New Tornado Alley Has Been Hyperactive this Year

More tornadoes than usual have already struck the U.S. in 2025—and many of them have been touching down farther east than they had in the past

By Mark Fischetti edited by Dean Visser

EF2 tornado lofting debris from a home in Lockett, Texas.

EF2 tornado lofting debris from a home in Lockett, Texas.

Jason Weingart/Getty Images

By last Saturday, the National Weather Service reported that 552 tornadoes had occurred in the U.S. this year—well above the average total of 337 for the period of January through April in 1991–2020. Then an outbreak struck Texas and Oklahoma on Saturday night, killing at least three people. Parts of those two states were at the center of the twister-prone “tornado alley” for most of the 1900s, but this well-known corridor has been shifting steadily eastward in the past three and a half decades. This year many of the touchdowns that caused deaths occurred in Mississippi, Alabama and Tennessee, all east of the old alley.

In 2023 Scientific American created a map, based on a then new extensive study to show the shift in large tornado outbreaks.

Map shows large tornado outbreak regions for two time intervals: 1950 through 1980 and 1989 through 2019. The highest-density area has shifted east, from Oklahoma and Arkansas to Kentucky and Tennessee.

Daniel P. Huffman (map); Source: “Examining the Changes in the Spatial Manifestation and the Rate of Arrival of Large Tornado Outbreaks,” by Niloufar Nouri and Naresh Devineni, in Environmental Research Communications, Vol. 4; February 2022 (data)


On supporting science journalism

If you're enjoying this article, consider supporting our award-winning journalism by subscribing. By purchasing a subscription you are helping to ensure the future of impactful stories about the discoveries and ideas shaping our world today.


Why does the U.S. have so many tornadoes?

Far more tornadoes strike the U.S. than any other country, and this is because of its geography. Wet, westerly winds from the Pacific Ocean become dry as they pass over the the Rocky Mountains, then become high and cool as they blow farther east. Meanwhile warm, humid air streams northward from the Gulf of Mexico, moving at a lower elevation. Flat terrain along these paths allows the two streams to run into each other. The angles at which they collide tend to create unstable air and wind shear—two big factors that favor tornado formation.

Where has tornado alley moved?

For decades, most of the largest outbreaks occurred across northeastern Texas, eastern Oklahoma, and western Arkansas and Missouri. But between 1989 and 2019, the focus shifted eastward by 400 to 500 miles, covering western Kentucky and Tennessee plus northern Mississippi and Alabama.

Why is tornado alley sliding eastward?

Most tornadoes are created by a supercell—a strong thunderstorm with a rotating updraft of air. Supercells tend to form when warm, humid, low-level air interacts with cool, dry, higher air. And climate change is now generating more of that warmer, moister air. Tornadoes also are more likely to develop when the local atmosphere is unstable, and warming increases instability. Climate change is warming the Gulf of Mexico as well, and this can send generous amounts of water vapor into the southeastern U.S.—farther east than it tended to travel decades ago. In addition, climate change has moved the rough north-south boundary between dry western U.S. air and moist, eastern U.S. air about 140 miles to the east.

Why does the shift matter?

Tornado shelters are common in Texas and Oklahoma but less so in other U.S. regions. The Southeast is more densely populated, and mobile homes (which often fare poorly in windstorms) are prevalent. Tornadoes in the Southeast also occur at night more often than those that strike farther west do, in part because winds can bring ample moisture from the Gulf after dark. And nighttime makes it much harder to see a storm coming.

Read the full story here.
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How Pope Francis Influenced Global Climate Change Action

The late Pope Francis supported global climate agreements, advocated for Indigenous people and inspired activism

Three Ways Pope Francis Influenced Global Climate ActionThe late Pope Francis supported global climate agreements, advocated for indigenous people and inspired activismBy Celia Deane-Drummond & The Conversation US Pope Francis receives a plant offered by an Amazon native as he celebrates the closing mass of the Synod on Amazonia on October 27, 2019 at the Saint Peter's Basilica in the Vatican. Andreas Solaro/AFP via Getty ImagesThe following essay is reprinted with permission from The Conversation, an online publication covering the latest research.The death of Pope Francis has been announced by the Vatican. I first met the late Pope Francis at the Vatican after a conference called Saving Our Common Home and the Future of Life on Earth in July 2018. My colleagues and I sensed something momentous was happening at the heart of the church.At that time, I was helping to set up the new Laudato Si’ research institute at the Jesuit Hall at the University of Oxford. This institute is named after the pope’s 2015 encyclical (a letter to bishops outlining church policy) on climate change.On supporting science journalismIf you're enjoying this article, consider supporting our award-winning journalism by subscribing. By purchasing a subscription you are helping to ensure the future of impactful stories about the discoveries and ideas shaping our world today.Its mission is rooted in the pope’s religiously inspired vision of integral ecology– a multidisciplinary approach that addresses social and ecological issues of equality and climate breakdown.Originating from Argentina, Pope Francis, the first Jesuit pope, witnessed firsthand the destruction of the Amazon and the plight of South America’s poorest communities. His concern for justice for vulnerable communities and protection of the planet go hand in hand with his religious leadership.In his first papal letter, Laudato Si’, he called for all people, not just Catholics, to pay more attention to the frailty of both our planet and its people. What we need is no less than a cultural revolution, he wrote. As a theologian, I recognise that he inspired significant change in three key ways.1. At global climate summitsIt’s no coincidence that Pope Francis released Laudato Si’ at a crucial moment in 2015 prior to the UN climate summit, Cop21, in Paris. A follow-up exhortation, or official statement, Laudate Deum, was released in October 2023, just before another UN climate summit, Cop28 in Dubai.Did the decisions at these global meetings shift because of the influence of Pope Francis? Potentially, yes. In Laudate Deum, Pope Francis showed both encouragement and some frustration about the achievements of international agreements so far.He berated the weakness of international politics and believes that Cop21 represented a “significant moment” because the agreement involved everyone.After Cop21, he pointed out how most nations had failed to implement the Paris agreement which called for limiting the global temperature rise in this century to below 2°C. He also called out the lack of monitoring of those commitments and subsequent political inertia. He tried his best to use his prominent position to hold power to account.Promoting a general moral awareness of the need to act in ecologically responsible ways, both in international politics and at the local level is something that previous popes, Pope John Paul II and Pope Benedict XVI also did. But, Pope Francis’s efforts went beyond that, by connecting much more broadly with grassroots movements.2. By advocating for Indigenous peopleCop28 marked the first time that close to 200 countries agreed to transition away from fossil fuels. Pope Francis’s interventions potentially helped shift the needle just a little in the desired direction.His emphasis on listening to Indigenous people may have influenced these gatherings. Compared with previous global climate summits, Cop28 arguably opened up the opportunity to listen to the voices of Indigenous people.However, Indigenous people were still disappointed by the outcomes of Cop28. Pope Francis’s lesser-known exhortation Querida Amazonia, which means “beloved Amazonia,” was published in February 2020.Pope Francis meets with the indigenous community at Muskwa Park in Maskwacis, south of Edmonton, western Canada, on July 25, 2022.Vincenzo Pinto/AFP via Getty ImagesThis exhortation resulted from his conversations with Amazonian communities and helped put Indigenous perspectives on the map. Those perspectives helped shape Catholic social teaching in the encyclical Fratelli Tutti, which means “all brothers and sisters,” published on October 3 2020.For many people living in developing countries where extractive industries such as oil and gas or mining are rife, destruction of land coincides with direct threats to life. Pope Francis advocated for Indigenous environmental defenders, many of whom have been inspired to act by their strong faith.For example, Father Marcelo Pérez, an Indigenous priest living in Mexico, was murdered by drug dealers just after saying mass on October 23 2023 as part of the cost of defending the rights of his people and their land.While 196 environmental defenders were killed globally in 2023, Pope Francis continued to advocate on behalf of the most marginalised people as well as the environment.3. By inspiring activismI’ve been speaking to religious climate activists from different church backgrounds in the UK as part of a multidisciplinary research project on religion, theology and climate change based at the University of Manchester. Most notably, when we asked more than 300 activists representing six different activist groups who most influenced them to get involved in climate action, 61% named Pope Francis as a key influencer.On a larger scale, Laudato Si’ gave rise to the Laudato Si’ movement which coordinates climate activism across the globe. It has 900 Catholic organisations as well as 10,000 of what are known as Laudato Si’ “animators”, who are all ambassadors and leaders in their respective communities.Our institute’s ecclesial affiliate, Tomás Insua, based in Assisi, Italy, originally helped pioneer this global Laudato Si’ movement. We host a number of ecumenical gatherings which bring together people from different denominations and hopefully motivate churchgoers to think and act in a more climate-conscious way.Nobody knows who the next pope might be. Given the current turmoil in politics and shutting down of political will to address the climate emergency, we can only hope they will build on the legacy of Pope Francis and influence political change for the good, from the grassroots frontline right up to the highest global ambitions.This article was originally published on The Conversation. Read the original article.

The Trump administration is sabotaging your scientific data | Jonathan Gilmour

Burying our heads in the sand won’t stop the climate crisis or pandemics. We’re taking action to preserve government toolsUnited States science has propelled the country into its current position as a powerhouse of biomedical advancements, technological innovation and scientific research. The data US government agencies produce is a crown jewel – it helps us track how the climate is changing, visualize air pollution in our communities, identify challenges to our health and provide a panoply of other essential uses. Climate change, pandemics and novel risks are coming for all of us – whether we bury our heads in the sand or not – and government data is critical to our understanding of the risks these challenges bring and how to address them.Many of thesedata remains out of sight to those who don’t use them, even though they benefit us all. Over the past few months, the Trump administration has brazenly attacked our scientific establishment through agency firings censorship and funding cuts, and it has explicitly targeted data the American taxpayers have paid for. They’re stealing from us and putting our health and wellbeing in danger – so now we must advocate for these federal resources. Continue reading...

United States science has propelled the country into its current position as a powerhouse of biomedical advancements, technological innovation and scientific research. The data US government agencies produce is a crown jewel – it helps us track how the climate is changing, visualize air pollution in our communities, identify challenges to our health and provide a panoply of other essential uses. Climate change, pandemics and novel risks are coming for all of us – whether we bury our heads in the sand or not – and government data is critical to our understanding of the risks these challenges bring and how to address them.Many of thesedata remains out of sight to those who don’t use them, even though they benefit us all. Over the past few months, the Trump administration has brazenly attacked our scientific establishment through agency firings censorship and funding cuts, and it has explicitly targeted data the American taxpayers have paid for. They’re stealing from us and putting our health and wellbeing in danger – so now we must advocate for these federal resources.That’s why we at the Public Environmental Data Partners are working to preserve critical environmental data. We are a coalition of non-profits, academic institutions, researchers and volunteers who work with federal data to support policy, research, advocacy and litigation work. We are one node in an expansive web of organizations fighting for the data American taxpayers have funded and that benefits us all. The first phase of our work has been to identify environmental justice tools and datasets at risk through conversations with environmental justice groups, current and former employees in local, state, and federal climate and environment offices, and researchers. To date, we have saved over a hundred priority datasets and have reproduced six tools.We’re not fighting for data for data’s sake; we’re fighting for data because it helps us make sense of the world.The utility of many of these datasets and tools comes from the fact that they are routinely updated. While our efforts ensure that we have snapshots of these critical data sources and tools, it will be a huge loss if these cease to be updated entirely. That’s why we are “life rafting” tools outside of government – standing up copies of them on publicly accessible, non-government pages – hoping that we can return them to a future administration that cares about human and environmental health and does not view science as a threat.The second phase is to develop these tools, advocate for better data infrastructure, and increase public engagement. There’s a question of scope – if the government stops sharing National Oceanographic and Atmospheric Administration data, we don’t have the resources to start monitoring and tracking hurricanes. For many of these critical data sources, the government is the only entity with the resources to collect and publish this data – think about the thousands of weather stations set up around the world or the global air pollution monitors or the spray of satellites orbiting the earth. On the other hand, we do have the expertise to build environmental justice tools that better serve the communities that have borne the brunt of environmental injustice, by co-creating with those communities and by building from what we have saved from the government – like the Council on Environmental Quality’s CEJST, the Environmental Protection Agency’s EJScreen, and the Centers for Disease Control and Prevention’s Social Vulnerability and Environmental Justice tools.A common refrain of the saboteurs is that if these functions that they are targeting are important enough, the states or the private sector will step in to fill the gap. While some of these functions of the federal government are replicable outside of government, privatization will render them less accessible, more expensive and subject to the whims of the markets. The states can also step in and fill some gaps – but many of the biggest challenges that we’re facing are best tackled by a strong federal government. Furthermore, many states are happily joining this anti-science crusade. The climate crisis and pandemics don’t stop politely at state borders. If data collection is left up to the states, the next pandemic will not leave a state untouched because it dismantled its public health department – but such actions will leave a gaping hole in our understanding of the risks to the residents of that state and its neighbors. What’s more, some states do not have the resources to stand up the infrastructure required to shoulder the burden of data collection. Coordination between federal and state governments is essential.Data is being stolen from us; our ability to understand the world is being stolen from us. Americans will die because the Trump administration is abdicating its responsibility to the people – this censorship regime will have dire consequences. That’s why we must stand up for science, we must be loud about the importance of federal data and we must put the brakes on Trump’s un-American agenda.

Zeldin says he can 'absolutely' assure public EPA deregulation efforts won’t harm environment

Environmental Protection Agency (EPA) Administrator Lee Zeldin said he can “absolutely” assure the public that the various deregulation efforts undergone by the agency will not harm the environment. Zeldin joined CBS News’s “Face the Nation” on Sunday, where he was asked if he could ensure the deregulation wouldn’t have an adverse impact. “Absolutely,” he replied....

Environmental Protection Agency (EPA) Administrator Lee Zeldin said he can “absolutely” assure the public that the various deregulation efforts undergone by the agency will not harm the environment. Zeldin joined CBS News’s “Face the Nation” on Sunday, where he was asked if he could ensure the deregulation wouldn’t have an adverse impact. “Absolutely,” he replied. “We have to both protect the environment and grow the economy.” Zeldin argued that it’s what the American people are demanding out of the Trump administration. He criticized Biden-era regulations that were “targeting entire industries.” “When the American public went to vote last November, they were talking about economic concerns, about struggling to make ends meet. That includes the cost of being able to heat their home,” he said. “The choice of whether or not to be able to heat their home or fill up their fridge with groceries or afford prescription medication.” Zeldin’s remarks come about a month after the Trump administration unveiled a list of climate and pollution regulations they were looking to dismantle. Under the reversed regulations are some of the Biden administration’s most championed measures, including increasing electric vehicles and quickly closing coal mines. The Trump administration said it was considering rolling back regulations on the neurotoxic mercury from power plans and general air pollution limits for soot. It will also reconsider that climate change poses a threat to the public, laying regulatory groundwork for future climate action. The agency also indicated that it would be closing offices dedicated to fighting pollution in underserved and minority communities. Zeldin said last month that the deregulation efforts would make it easier for Americans to buy a car and heat their homes. Environmentalists have sounded the alarm over the administration’s plans, but Zeldin remained confident that the public and environment would not be negatively impacted. Zeldin noted that there will be a process for public comment and he encourages the public to “weigh in” when they have that opportunity. “I have a zero tolerance for any waste and abuse. It is my duty to ensure that I’m an exceptional steward of tax dollars,” Zeldin later said.

Tackling Climate Change Must Be Job Number One

This Earth Day, on April 22, you can exercise your power. The wellbeing of our planet and its people is at stake.

Amid the historic and sweeping cuts to federal agencies and programs being carried out by the Trump Administration, one truth has been overlooked: If we’re serious about cutting waste and protecting public funds, we must confront climate change head-on. 2024 was a disaster for the planet and its people. According to NASA, it was the warmest year since temperatures began being recorded in 1880. In the United States alone there were twenty-seven climate and weather events that resulted in at least a billion dollars in damages—second only to 2023, with twenty-eight such events.  These events—wildfires, floods, tornadoes, and hurricanes—are becoming the norm, and they’re financially devastating.  In January, tens of thousands of acres and more than 16,000 structures burned in southern California. Last month, more than 150 tornadoes tore across the central and southeastern United States, and, this month, historic floods submerged parts of the Midwest and South. In the parts of the United States at higher risk for climate-related extreme weather events, insurance claims are increasing in cost and frequency. Not surprisingly, these high-risk areas are also now seeing the highest increase in cancellations for failure to pay premiums and nonrenewals by the insurance companies. Without insurance, homeowners may not be able to rebuild when disaster strikes. And climate change isn’t the only escalating crisis. The world is also drowning in plastic. On September 5, 2024—Plastic Overshoot Day—the world exceeded its capacity to manage plastic waste. An estimated 220 million tons of plastic are projected to be produced this year alone, and 66 percent of people live in areas where plastic waste exceeds waste management capacity. Meanwhile, new research shows just how dangerous plastics are to human health. Microplastics have been found in human brains, and the World Wildlife Fund estimates that we may be ingesting up to five grams of plastic each week—the weight of a credit card. Plastics are now linked to cancer, endocrine disruption, impaired fertility, and cognitive development issues. Wildlife, too, is suffering from entanglement, starvation, and habitat loss. Here’s the hopeful part: We already have the tools and the power to change this. EARTHDAY.ORG, the network created by the original organizers of the first Earth Day in 1970, is still leading the charge with our campaign, “Our Power, Our Planet.” The goal is to help individuals, cities, and communities act on the environmental challenges of today. The economic upside of environmental action is massive. New solutions to our current environmental crisis rest in the hands of the people. This Earth Day, on April 22, you can exercise your power. Demonstrate to our leaders in government and business that we are still here, we are a witness to their actions, and we will hold them accountable to do right by our planet and its people.  As consumers, we can choose plastic-free products and demand a reduction and transition in the use of plastics from businesses, while at the same time pressuring government leaders to reduce plastic production globally to end the use of toxic ingredients and to improve waste management systems. We have the collective power not only to protect our planet but also to improve lives and livelihoods. The link between greenhouse gas emissions and climate change is now scientifically indisputable. According to the International Renewable Energy Agency, 90 percent of global electricity can and should come from renewable sources by 2050. The transition also promises cleaner air, up to thirty million new jobs, and stronger energy independence. Transitioning to clean energy, reducing plastic waste, and increasing resilience to extreme weather are among the most fiscally responsible actions governments can take. This Earth Day, we must recognize that efficiency isn’t just about cutting—it’s about investing in solutions that protect people and our infrastructure. True government efficiency means reducing risk in order to cut costs—not paying billions each year to clean up after preventable disasters. This column was produced for Progressive Perspectives, a project of The Progressive magazine, and distributed by Tribune News Service.

Australia opposition leader clarifies he believes in climate change after debate

Peter Dutton is facing outrage after comments he made on climate change during an election debate.

Australian opposition leader Peter Dutton has clarified he believes in climate change after facing backlash for comments made during an election debate on Wednesday night.Dutton and Prime Minister Anthony Albanese were asked about the increasing impact of climate change, to which Dutton replied he would "let scientists and others pass that judgment".He had previously said that flooding and natural disasters were "part of the history of our state of this country". The comments generated outrage from climate groups and mockery from Albanese."I believe in climate change, and that it is a reality" Dutton said while campaigning on Monday. During Wednesday's debate, Dutton responded to the moderator's question on whether flooding and natural disasters were getting worse by saying, "I don't know because I'm not a scientist". "I can't tell you whether the temperature has risen in Thargomindah because of climate change or the water levels are up," he added.Meanwhile Albanese, who had said Dutton's words showed "no acceptance of the science of climate change" continued mocking his opponent on Thursday, asking "does he believe in gravity?" Environmental organisations have reacted to Dutton's debate remarks with dismay.Climate Council CEO Amanda McKenzie told the Guardian "it's outrageous for a senior political leader to be so out of touch that they claim they "don't know" the risks Australians are facing."A report from the non-profit released earlier this month stated one in 23 properties across the country were found to be at high risk from climate change.Australian Conservation Foundation Chief Executive Kelly O'Shanassy called Dutton's words "a serious concern" in an interview with the Canberra Times, adding that "the next parliament is the last parliament that can get Australia's massive contribution to climate change under control."Albanese was also questioned on his climate policy during the debate, though for different reasons. The prime minister has championed renewable energy throughout his time in office, but has faced backlash for rising power bills.Asked when fees would fall, the prime minister did not directly reply. Instead, he stressed renewables were the "cheapest form of power".In March, Labor announced it would extend a relief system for the bills, providing a further automatic $150AUD ($95;£72) rebate to households and small businesses. The hour-long debate also saw the two party leaders pressed on other hot button issues for Australia including housing and foreign policy, in particular Australia's relationship to the US.

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