{"id":626580,"date":"2023-04-07T09:48:53","date_gmt":"2023-04-07T14:48:53","guid":{"rendered":"https:\/\/news.sellorbuyhomefast.com\/index.php\/2023\/04\/07\/americas-tornadoes-are-evolving-fast\/"},"modified":"2023-04-07T09:48:53","modified_gmt":"2023-04-07T14:48:53","slug":"americas-tornadoes-are-evolving-fast","status":"publish","type":"post","link":"https:\/\/newsycanuse.com\/index.php\/2023\/04\/07\/americas-tornadoes-are-evolving-fast\/","title":{"rendered":"America\u2019s Tornadoes Are Evolving, Fast"},"content":{"rendered":"
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The US is<\/span> experiencing devastation from a flurry of tornadoes. At least\u00a0five people<\/a> died Wednesday when a tornado tore through southeastern Missouri. It followed\u00a0six<\/a> in New Jersey and\u00a0one<\/a> in Delaware that killed a person and became the state\u2019s widest on record. Batches of tornadoes killed more than\u00a030 people<\/a> in the South and Midwest over the weekend. And January saw\u00a0168<\/a> preliminary tornado reports, nearly five times that month\u2019s average between 1990 and 2010.\u00a0<\/p>\n

It\u2019s been a busy and deadly start to tornado season, and the twisters have hit regions typically spared. We know that a warming climate is creating moisture and instability in the air\u2014two factors that spur the formation of\u00a0tornadoes. But experts caution that it\u2019s too soon to link one major event\u2014or even season\u2014to\u00a0climate change<\/a>. What they are seeing is changes in when and where the tornadoes strike, which could expose more people to danger.\u00a0<\/p>\n

\u201cWe are still very unsure what the future holds,\u201d says Jana Houser, a professor of meteorology at the Ohio State University. Meteorologists can look at increased humidity and warming, along with changes in the jet stream, and see how they may affect the storms that cause tornadoes. But, Houser says, \u201cwe really can\u2019t pinpoint what we expect to see in terms of when and where tornadoes are going to occur.\u201d\u00a0<\/p>\n

Most tornadoes spring from uncommon supercell thunderstorms. To form, tornadoes need moist, warm air near the ground. But they also need a strong, vertical wind shear, which is caused by wind changing direction and speed between the ground and higher elevations. Air begins to spin horizontally in a cylinder-like shape. As that is lifted and gains speed, it narrows and forms the menacing funnel we recognize as a tornado.\u00a0<\/p>\n

To understand how tornado patterns might change, meteorologists are looking at trends in their parent supercell storms. More heat in the atmosphere leads to more moisture and more instability. But wind shear, the other component of a tornado, may actually decrease over time with climate change. The jet stream could weaken as temperature differences between Arctic and mid-latitude air lessen, which affects wind shear. The end result of those changes mingling in the atmosphere isn\u2019t clear.\u00a0<\/p>\n

\u201cWe\u2019re in the experiment,\u201d says Walker Ashley, a professor of meteorology at Northern Illinois University who wrote a recent\u00a0paper<\/a> on changing tornado patterns. \u201cWhen we look at the fundamental ingredients that go into creating the severe storm, we are having changes. It\u2019s a question of how much and to what scale?\u201d<\/p>\n

It\u2019s likely supercell storms will hit the US more often in the late winter and early spring and become less frequent in the late summer and fall, experts say. And tornado territory is shifting too. \u201cTornado Alley,\u201d a swath of land encompassing parts of Texas, Louisiana, Oklahoma, Kansas, South Dakota, Iowa, and Nebraska, has long been the twister hotbed. But drought conditions are leading to fewer storms, says Robert Trapp, professor and head of the Department of Atmospheric Science at the University of Illinois at Urbana-Champaign.\u00a0<\/p>\n<\/div>\n

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Still, as storms are suppressed in the Great Plains, they\u2019re becoming more common to the east. That\u2019s because the US Southeast has long had wind shear, Ashley says. And as climate change adds moisture and instability to the environment, it brings the additives that form tornadoes.\u00a0<\/p>\n

It\u2019s harder to make a connection between climate change and tornadoes than it is for\u00a0other disastrous weather, like\u00a0heat waves<\/a> or\u00a0hurricanes<\/a>. By comparison, tornadoes are small-scale events in both size and duration. The US National Weather Service only\u00a0began keeping records of tornadoes in 1950, and many have gone unobserved in unpopulated areas. Data from the National Oceanic and Atmospheric Administration<\/a> shows that the number of days with tornadoes each year has dropped over time, but there\u2019s more tornado activity on the days when they\u00a0do<\/em> occur.<\/p>\n

The records also show tornadoes are capricious\u2014some years they kill 10 to 20 people across the US. Others, they take more than 100 lives. But overall, the number of\u00a0deaths per million people<\/a>\u00a0has fallen over time.\u00a0<\/p>\n

Still, their power to destroy may grow for a simple reason: There are more people in their paths. The US population has more than doubled since 1950. The Southeast, where tornado activity could increase, has been a hot spot for real estate development. Ashley calls this the \u201cbull\u2019s-eye effect.\u201d Whether or not tornadoes increase in frequency and intensity, they\u2019ll be more likely to run into people as communities expand. And more tornadoes in the off-season\u2014and in new places\u2014could lead to more devastation.<\/p>\n<\/div>\n<\/div>\n

Read More<\/a>
\n Amanda Hoover<\/p>\n","protected":false},"excerpt":{"rendered":"

The US is experiencing devastation from a flurry of tornadoes. At least\u00a0five people died Wednesday when a tornado tore through southeastern Missouri. It followed\u00a0six in New Jersey and\u00a0one in Delaware that killed a person and became the state\u2019s widest on record. Batches of tornadoes killed more than\u00a030 people in the South and Midwest over the<\/p>\n","protected":false},"author":1,"featured_media":626581,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[282,46,41365],"tags":[],"class_list":{"0":"post-626580","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-americas","8":"category-technology","9":"category-tornadoes"},"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/newsycanuse.com\/index.php\/wp-json\/wp\/v2\/posts\/626580","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/newsycanuse.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/newsycanuse.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/newsycanuse.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/newsycanuse.com\/index.php\/wp-json\/wp\/v2\/comments?post=626580"}],"version-history":[{"count":0,"href":"https:\/\/newsycanuse.com\/index.php\/wp-json\/wp\/v2\/posts\/626580\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/newsycanuse.com\/index.php\/wp-json\/wp\/v2\/media\/626581"}],"wp:attachment":[{"href":"https:\/\/newsycanuse.com\/index.php\/wp-json\/wp\/v2\/media?parent=626580"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/newsycanuse.com\/index.php\/wp-json\/wp\/v2\/categories?post=626580"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/newsycanuse.com\/index.php\/wp-json\/wp\/v2\/tags?post=626580"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}