--- title: Katrina Anniversary: Climate Change Makes Hurricanes Worse description: Research has shown that climate change will increase the devastation caused by hurricanes as sea levels rise due to global warming canonical: https://time.com/4013637/climate-change-hurricanes-impact/ author: Justin Worland article:opinion: false article:content_tier: free article:published_time: 2015-08-27T22:48:16.000Z article:modified_time: 2026-08-04T08:04:58.664Z article:section: Science og:title: Why Climate Change Could Make Hurricane Impact Worse og:description: Rising sea levels means higher waters during powerful storms og:url: https://time.com/4013637/climate-change-hurricanes-impact/ og:site_name: TIME og:image: https://static.time.com/v3/assets/bltea6093859af6183b/blt331c55cd05cfec73/698861550b72e3ea556e5952/katrina-1.jpg?branch=production&width=1200&quality=75&auto=webp&crop=16:9 og:image:width: 3384 og:image:height: 1904 og:image:alt: Victims of Hurricane Katrina stay at the Astrodome stadium in Houston. og:type: article twitter:card: summary_large_image twitter:title: Why Climate Change Could Make Hurricane Impact Worse twitter:description: Rising sea levels means higher waters during powerful storms twitter:image: https://static.time.com/v3/assets/bltea6093859af6183b/blt331c55cd05cfec73/698861550b72e3ea556e5952/katrina-1.jpg?branch=production&width=1200&quality=75&auto=webp&crop=16:9 ---  # Why Climate Change Could Make Hurricane Impact Worse > Sponsored content. 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It reaches 40,000 subscribers with a 34.2% open rate and a 2.1% click rate as of August 2026. #### Where can I follow the energy transition as a business story? Future Proof covers climate and energy as an economic and business story rather than only an environmental one. It publishes every Friday and is free at time.com/newsletters. #### Who writes Future Proof? Justin Worland, a senior correspondent at TIME and an award-winning climate journalist, writes Future Proof. #### Is Future Proof free? Yes. Future Proof is free at time.com/newsletters. ## Video: Hurricane Katrina By The Numbers: Ten Years Later [Watch (HLS stream): Hurricane Katrina By The Numbers: Ten Years Later](https://cdn.jwplayer.com/manifests/APBC75ye.m3u8) (2:07)  _Published 2015-08-22. Hurricane Katrina By The Numbers: Ten Years Later_  by [Justin Worland](https://time.com/author/justin-worland/)  ## Justin Worland Senior Correspondent Aug 27, 2015 10:48 PM UTC  Victims of Hurricane Katrina stay at the Astrodome stadium where 16,000 evacuees were receiving food and shelter in Houston on Sept. 4, 2005. Victims of Hurricane Katrina stay at the Astrodome stadium where 16,000 evacuees were receiving food and shelter in Houston on Sept. 4, 2005.Carlos Barria—Reuters  by [Justin Worland](https://time.com/author/justin-worland/)  ## Justin Worland Senior Correspondent Aug 27, 2015 10:48 PM UTC Hurricane Katrina surprised disaster preparedness authorities when it made landfall 10 years ago, leveling entire communities and killing more than 1,800 people. The storm caused more than $100 billion in damage, making it the costliest natural disaster in U.S. history. But for all the damage the storm caused in New Orleans, Katrina was a relatively weak hurricane when it hit the city. In the academic community, the unexpected disaster prompted climate scientists to consider the link between climate change and storms. Since then, research has shown that climate change will increase the devastation caused by hurricanes as sea levels rise due to global warming. Some research has also suggested that climate change has increased the intensity and frequency of storms. The phenomenon of storm surge plays an essential role in the worsening effect of hurricanes. Storm surge occurs when waters rise above their normal level during a storm and wind and weather conditions push that water onto shore. Thanks to global warming and rising sea levels, the potential for ocean water to be washed ashore by a storm surge has risen as well. **Read More**: [These Are the Cities Most Vulnerable to the Next Katrina](http://time.com/4012208/katrina-cities-flood-risk/) During Katrina, storm surge pushed ashore the water, causing levees to fail. The storm was recorded as a hurricane of category 1 or category 2 strength when it hit New Orleans, relatively weak for such a devastating hurricane. But the storm surge reached as high as 12 feet in some places, creating flood conditions across the city and wreaking havoc with the city’s levee system. Hurricane Sandy, which hit the New York City in 2012, cost $2 billion more due to sea level rise than it would have otherwise, according to a RAND [report](https://eos.org/articles/sea-level-rise-added-2-billion-to-sandys-toll-in-new-york-city). “The strong winds in Katrina essentially blew water from the gulf up across southern Louisiana,” said Hugh Roberts, associate vice president at ARCADIS, a firm that has consulted on Louisiana’s rebuilding efforts. “Once it hits land, it begins to build up.” In the future, rising sea levels will only exacerbate the storm surge problem. Around the globe, sea levels are estimated to rise 1 to 3 feet by 2100 due to climate change, and researchers say that in places like New Orleans 1 foot of sea level rise may lead to a 3 or 4 foot storm surge rise. While scientists have come to a consensus about how storm surge will affect cities, research on how climate change affects hurricane strength and intensity remains unclear, and no findings have been positive. Many peer-reviewed studies suggest that warmer weather in tropical oceans has [increased the frequency](ftp://texmex.mit.edu/pub/emanuel/PAPERS/EOS%5Fmann%5Femanuel%5F2006.pdf) of tropical storm activity, though not necessarily the intensity. Others suggest that climate change has made storms more intense. [Still other research](http://www.pnas.org/content/110/30/12219.abstract) has suggested that future storms will be both more frequent and more intense. The projection of more frequent and more intense hurricanes might surprise even the causal weather observer. Indeed, a major hurricane of category 3 or higher hasn’t hit U.S. soil since 2005, according to a [study](http://onlinelibrary.wiley.com/doi/10.1002/2015GL063652/abstract?campaign=wlytk-41855.6211458333) from earlier this year. But the so-called hurricane drought shouldn’t be viewed as an indication of what’s to come. This year’s strong El Niño will likely reduce the chance of powerful hurricanes. Increased hurricane risk due to climate change presents a unique challenge for policy makers. While the federal government has promoted cuts to greenhouse gas emissions in hopes of slowing climate change, preparing for more dramatic storms requires local solutions. Even if countries around the world stem global warming, sea level rise will occur. “There is not uncertainty about sea level rise,” said RAND researcher Jordan Fischbach, who led a Louisiana flood risk assessment team. “As we get more sea level rise, these large storm events will with certainty damage to assets and people.” ```json [{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://time.com/4013637/climate-change-hurricanes-impact/","mainEntityOfPage":{"@type":"WebPage","@id":"https://time.com/4013637/climate-change-hurricanes-impact/"},"headline":"Why Climate Change Could Make Hurricane Impact Worse","datePublished":"2015-08-27T22:48:16.000Z","dateModified":"2026-08-04T08:04:58.664Z","description":"Sea level rise plays a key role","url":"https://time.com/4013637/climate-change-hurricanes-impact/","keywords":["climate change","Natural Disasters"],"thumbnailUrl":"https://static.time.com/v3/assets/bltea6093859af6183b/blt331c55cd05cfec73/698861550b72e3ea556e5952/katrina-1.jpg?branch=production&width=1200&quality=75&auto=webp&crop=1200:675&height=675","author":[{"@type":"Person","name":"Justin Worland","jobTitle":"Senior Correspondent","url":"https://time.com/author/justin-worland/"}],"articleSection":"Science","image":[{"@type":"ImageObject","url":"https://static.time.com/v3/assets/bltea6093859af6183b/blt331c55cd05cfec73/698861550b72e3ea556e5952/katrina-1.jpg?branch=production&width=1200&quality=75&auto=webp&crop=1200:675&height=675","width":1200,"height":675,"headline":"Victims of Hurricane Katrina stay at the Astrodome stadium in Houston.","caption":"Victims of Hurricane Katrina stay at the Astrodome stadium in Houston.","creditText":"Carlos Barria—Reuters","representativeOfPage":true}],"publisher":{"@type":"Organization","name":"Time","url":"https://time.com/","logo":{"@type":"ImageObject","url":"https://time.com/images/logo.png","width":528,"height":156},"foundingDate":"March 3, 1923","sameAs":["https://www.facebook.com/time","https://www.instagram.com/time/?hl=en","https://twitter.com/time","https://www.pinterest.com/timemagazine"]}},{"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"/section/science/","name":"Science"}},{"@type":"ListItem","position":2,"item":{"@id":"/tag/climate-change/","name":"climate change"}},{"@type":"ListItem","position":3,"item":{"@id":"https://time.com/4013637/climate-change-hurricanes-impact/","name":"Why Climate Change Could Make Hurricane Impact Worse"}}]},{"@context":"https://schema.org","@type":"VideoObject","name":"Hurricane Katrina By The Numbers: Ten Years Later","description":"Hurricane Katrina By The Numbers: Ten Years Later","thumbnailUrl":"https://cdn.jwplayer.com/v2/media/APBC75ye/poster.jpg?width=720","uploadDate":"2015-08-22T20:57:15.000Z","contentUrl":"https://cdn.jwplayer.com/manifests/APBC75ye.m3u8","embedUrl":"https://time.com/4013637/climate-change-hurricanes-impact/","duration":"PT2M7S","potentialAction":{"@type":"SeekToAction","target":"https://time.com/4013637/climate-change-hurricanes-impact/?jw_start={seek_to_second_number}","startOffset-input":"required name=seek_to_second_number"}}] ```