{"id":39841,"date":"2023-07-24T12:47:27","date_gmt":"2023-07-24T16:47:27","guid":{"rendered":"https:\/\/ifintechworld.com\/news\/what-makes-flash-floods-so-dangerous-heres-how-to-protect-yourself\/"},"modified":"2023-07-24T12:47:29","modified_gmt":"2023-07-24T16:47:29","slug":"what-makes-flash-floods-so-dangerous-heres-how-to-protect-yourself","status":"publish","type":"post","link":"https:\/\/ifintechworld.com\/?p=39841","title":{"rendered":"What makes flash floods so dangerous? Here\u2019s how to protect yourself."},"content":{"rendered":"

Flash foods, which are different and often more dangerous than generalized flooding, have crept into the nation\u2019s weather and disaster parlance as their frequency picks up and they hit more unsuspecting places, including submerging parts of the Las Vegas Strip last summer.<\/p>\n

Floods are the most common (and among the most deadly) natural disasters in the United States. And few are completely out of harm\u2019s way. Floods have brought destruction to every state and nearly every county, and in many areas, they are getting worse.<\/p>\n

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Plus, this summer, the early arrival of an expected El Ni\u00f1o ocean weather phenomenon is adding to heat and other weather extremes, which can mean more water in places.<\/p>\n

Read:<\/strong> Here comes El Ni\u00f1o: It\u2019s early, likely to be sloppy and add even more heat to a warming world<\/p>\n

Over the weekend, several people were missing after intense thunderstorms dumped record amounts of rain across a wide swath of\u00a0Canada\u2019s Atlantic-coast province of Nova Scotia, causing flash flooding, road washouts and power outages.<\/p>\n

And dangerous flash floods were responsible for at least six deaths in Bucks County, Pa., in recent weeks. In that area, the search for a missing baby resumed this week after his toddler sister\u2019s body was found. Pennsylvania flooding followed similarly dangerous conditions in New York and Vermont earlier in July.<\/p>\n

China, India and other parts of the globe are dealing with their own flooding extremes.<\/p>\n

Read:<\/strong> Record monsoon rains have killed more than 100 people in northern India this week<\/p>\n

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\n \u201c<\/span> According to the National Weather Service, a flash flood is a flood caused by heavy or excessive rainfall in a short period, generally less than six hours. \u201d<\/span>\n <\/p>\n<\/p><\/div>\n<\/p><\/div>\n

Read:<\/strong> Homeowners can check a property\u2019s flood, heat and wildfire risk for free with this high-powered app<\/p>\n

Flooding, like most disasters, involves a number of competing factors that may impact frequency and intensity, sometimes in opposing ways. Climate change, which is worsening extreme rainfall in many storms, is an increasingly important part of the mix, scientists say.<\/p>\n

How does a flash flood differ?<\/h2>\n

According to the National Weather Service, a flash flood is a flood caused by heavy or excessive rainfall in a short period, generally less than six hours. Flash floods are usually characterized by raging torrents after heavy rains that rip through river beds, urban streets or mountain canyons, sweeping along everything in their path. They can occur within minutes or a few hours of excessive rainfall.<\/p>\n

One of the biggest differences between flash floods and generalized flooding is that flash floods can be more dangerous than people think. Even a few inches of water can have a current that knocks people down and just a few feet of water can send a car floating. Flash flooding at night is particularly dangerous, because unknown depths are disguised, looking simply like wet surfaces.<\/p>\n

Flash floods can also occur even if no rain has fallen, such as after a levee or dam has failed, or after a sudden release of water by a debris or ice jam. What\u2019s more, the inability of some municipal storm sewers to keep up with the water removal can aggravate the situation, and that\u2019s been especially true as the nation\u2019s infrastructure has aged.<\/p>\n

Flash flooding isn\u2019t unheard of in the Southwest U.S. during monsoon season,\u00a0when a seasonal change in winds draws moisture into the area and can lead to more showers and thunderstorms. But exceptionally dry years mean that the bare ground can also be as hard as concrete in some places, allowing for restricted absorption.<\/p>\n

Related: <\/strong>Flash floods, like in Las Vegas, are deadlier than hurricanes, tornadoes or lightning<\/p>\n

Sometimes both flash flooding and ongoing rising waters from rivers and creeks can devastate an area at the same time. In 2017, after\u00a0the very dangerous and expensive\u00a0Hurricane Harvey swamped coastal areas, it stalled around southern Texas for days as a weakening hurricane that brought catastrophic flash and river flooding,\u00a0the NWS archives say.<\/p>\n

And during 2021\u2019s Hurricane Ida, the NWS office in New York\u00a0declared its first-ever set of flash flood emergencies in the region, an alert level that is reserved for \u201cexceedingly rare situations when a severe threat to human life and catastrophic damage from a flash flood is happening or will happen soon,\u201d officials said at the time.<\/p>\n

Flash flooding is expected to increase<\/h2>\n

Most worrying, perhaps, is that flash flooding is expected to increase as there are more extreme precipitation events brought on by climate change and man-made atmospheric warming, meteorologists and climate scientists say. This is because warmer temperatures increase evaporation, which puts more moisture into the atmosphere that then gets released as rain or snowfall.<\/p>\n

As global warming continues to exacerbate sea level rise and extreme weather, our nation\u2019s floodplains are expected to grow by approximately\u00a045%\u00a0by century\u2019s end.<\/p>\n

Already, inland U.S. flooding risk increasingly factors into interactive warning maps and real estate and insurance decisions, as homeowners, business operators and politicians grapple with all the ways climate change should change how we talk about and prepare for weather extremes, including the frequency of events and extended seasons. Because flood insurance is handled through the federal government\u2019s Federal Emergency Management Agency, and not individual private policies, there\u2019s often more to understand about paying for damages when you are impacted.\u00a0<\/p>\n

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\n \u201c<\/span> Our nation\u2019s floodplains are expected to grow by approximately\u00a0 45% by century\u2019s end.\u201d<\/span>\n <\/p>\n<\/p><\/div>\n<\/p><\/div>\n

Planning and engineering trade groups say cities must dedicate\u00a0more of their infrastructure budget\u00a0to fortifying storm sewers. And cities might think of leaning on nature to fight nature.<\/p>\n

The Natural Resources Defense Council argues that populated areas, especially, must think of permeable pavement and rainwater harvesting (instead of simply allowing for too-slow runoff), green roofs, rain gardens and additional tree planting.\u00a0<\/p>\n

Here\u2019s more from the NRDC.<\/p>\n

For now, the Red Cross has\u00a0some tips\u00a0for flood and flash flood safety, such as getting out of your vehicle sooner versus later, and moving to higher ground, if you get caught on a flooded road.<\/p>\n

Read:<\/strong> \u2018I started just connecting the dots\u2019: Iowa TV meteorologist hounded off the air over climate-change reporting<\/p>\n

See additional coverage on the MarketWatch Living With Climate Change page.<\/p>\n

The Associated Press contributed<\/em>.<\/p>\n<\/p><\/div>\n

Read the full article here<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Flash foods, which are different and often more dangerous than generalized flooding, have crept into the nation\u2019s weather and disaster parlance as their frequency picks up and they hit more unsuspecting places, including submerging parts of the Las Vegas Strip last summer. Floods are the most common (and among the most deadly) natural disasters in […]<\/p>\n","protected":false},"author":1,"featured_media":39842,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"gallery","meta":{"footnotes":""},"categories":[236],"tags":[83],"class_list":["post-39841","post","type-post","status-publish","format-gallery","has-post-thumbnail","hentry","category-news","tag-featured","post_format-post-format-gallery"],"yoast_head":"\nWhat makes flash floods so dangerous? 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