THE HALFAX HEIMDALL AUGUR

Rising temperatures may increase flood risk through river ‘whiplash’, study finds. Sudden shifts from wet to dry weather, or vice versa, may foil typical drought- and flood-prevention measures. www.theguardian.com/environment/...

Climate change impact on flood and extreme precipitation increases with ... Download PDF Subjects Climate change Natural hazards An Author Correction to this article was published on 07 October 2020 This article has been updated Abstract The hydrological cycle is expected to intensify with global warming, which likely increases the intensity of extreme precipitation events and the risk of flooding. The changes, however, often differ from the theorized expectation of increases in water‐holding capacity of the atmosphere in the warmer conditions, especially when water availability is limited. Here, the relationships of changes in extreme precipitation and flood intensities for the end of the twenty-first century with spatial and seasonal water availability are quantified. Results show an intensification of extreme precipitation and flood events over all climate regions which increases as water availability increases from dry to wet regions. Similarly, there is an increase in the intensification of extreme precipitation and flood with the seasonal cycle of water availability. The connection between extreme precipitation and flood intensity changes and spatial and seasonal water avail…

Rising temperatures are causing 'hydroclimatic whiplash,' which may cause rivers to swing between extreme floods and droughts. Because of this, old planning methods may not cope. We need a government serious about reaching our climate goals to protect us and our planet.

Rising temperatures may trigger a dangerous increase in “hydroclimatic whiplash” in rivers that would make traditional approaches to flood and drought planning insufficient, a study has found. www.theguardian.com/environment/...

How Rising Temperatures Dramatically Increase Flood Risks Higher temperatures increase flood risks by intensifying rainfall, accelerating snowmelt, and raising sea levels, leading to more frequent and severe flooding events. Climate change is creating a dangerous flood-risk feedback loop. As global temperatures rise, flood events become more frequent and severe – with devastating consequences for communities worldwide. Understanding this temperature-flood connection helps us prepare for a wetter, more extreme future. The Science: Why Heat Leads to More Flooding Warmer air holds more moisture – about 7% more water vapor per 1°C temperature increase. This simple physical principle explains much of our growing flood risk: Heavier rainfall: More atmospheric moisture leads to more intense downpours Faster snowmelt: Rising temperatures accelerate spring thaw cycles Drought-flood cycle: Parched ground can’t absorb sudden heavy rains Rainfall Intensity Spikes A 2023 study found climate change increased Pakistan’s 2022 flood rainfall by 50-75%. The resulting floods submerged one-third of the country, displacing 33 million people. Snowpack Changes Warmer winters mean more precipitation fall…

Why floods are hitting more places and people Global warming fromclimate changemeans more evaporation and more moisture in the atmosphere, which means rainfall can be intensified. And intense rainfall and changing landscapes make for more disastrous floods. Every 1 degree F rise in temperature can mean4% more water vaporin the air. And since average surface temperature was more than 2 degrees Fwarmer in 2020than it was a hundred years ago, there can be nearly 9% more moisture in the air — and clouds. Recent research shows that in the future, hot, wet conditions (as opposed to hot, dry conditions) are expected to be more common. Heatwaves occurring before heavy rain will dry out the soil, making it less able to absorb water when it rains, increasing the likelihood of flooding. Used with permission fromClimate Central. What’s more, the way humans have developed natural landscapes, both inland and along rivers and coasts, means more rainwater remains unchecked and unabsorbed at the surface, turning life-giving rains into devastating floods. Our roads, sidewalks, buildings, shipping canals, dams and agricultural practices have eliminated many natural landscape features that would…

Rising temperatures, rising risks: The compounding effects of heat ... In 2022, Pakistan experienced its most devastating floods of this century. This unprecedented disaster left one-third of the country underwater, killing over 1,200 people and displacing 33 million more. Pakistan’s authorities faced a wave of resulting crises: drowned and displaced communities; devastated agricultural yields; widespread destruction to the country’s infrastructure; and an increase in waterborne diseases. Global warming will compound the human impact of climate disasters and make it more difficult for governments to respond and recover. As temperatures climb, scientistsexpectlonger and more intense heat waves, droughts and floods. Disasters like these often also result in deaths, loss of livelihoods, reduced agricultural production, and property damage. Climate disasters are often understood, prepared for, and responded to as individual challenges. While governments might tackle the upcoming hurricane season with specific emergency response strategies, they often do not account for heat waves that kill people when the power is out due to a storm, likeafter Hurricane Idain New Orleans, Louisiana.…

Warming Makes Droughts, Extreme Wet Events More Frequent, Intense 5 min read Warming Makes Droughts, Extreme Wet Events More Frequent, Intense Kathryn Cawdrey Mar 13, 2023 Article Scientists have predicted that droughts and floods will become more frequent and severe as our planet warms and climate changes, but detecting this on regional and continental scales has proven difficult. Now a new NASA-led study confirms that major droughts and pluvials – periods of excessive precipitation and water storage on land – have indeed been occurring more often. In the study published March 13, 2023, in the journal Nature Water , two NASA scientists examined 20 years of data from the NASA/German GRACE and GRACE-FO satellites to identify extreme wet and dry events. Floods and droughts account for more than 20% of the economic losses caused by extreme weather events in the U.S. each year. The economic impacts are similar around the world, though the human toll tends to be most devastating in poor neighborhoods and developing nations. The scientists also found that the worldwide intensity of these extreme wet and dry events – a metric that combines extent, duration, and severity – is closely link…

Rising temperatures may increase flood risk through river ‘whiplash’, study finds | Climate crisis https://www.byteseu.com/2115383/ Rising temperatures may trigger a dangerous increase in “hydroclimatic whiplash” in rivers that would make traditional approaches to flood and drought planning …

"Rising temperatures may trigger a dangerous increase in “hydroclimatic whiplash” in rivers that would make traditional approaches to flood and drought planning insufficient" #ClimateActionNOW www.theguardian.com/environment/...

New research led by UEA shows UK rivers are facing a future of more extreme swings between drought and flooding; a phenomenon known as “hydroclimatic whiplash” As the climate warms, these rapid shifts could become much more frequent. Read more: www.uea.ac.uk/about/news/a...

Rising temperatures may increase flood risk through river ‘whiplash’, study finds Sudden shifts from wet to dry weather, or vice versa, may foil typical drought- and flood-prevention measures www.theguardian.com/environment/...

Rising temperatures may increase flood risk through river ‘whiplash’, study finds <p>Sudden shifts from wet to dry weather, or vice versa, may foil typical drought and flooding prevention measures</p><p>Rising temperatures may trigger a dangerous increase in “hydroclimatic whiplash” in rivers that would make traditional approaches to flood and drought planning insufficient, a study has found.</p><p>As temperatures rise owing to the worsening climate crisis, rivers will experience increasingly rapid transitions between heavy downpours and long dry spells – called hydroclimatic whiplash events – because a warmer atmosphere holds more moisture, intensifying rainfall extremes.</p> <a href="https://www.theguardian.com/environment/2026/jun/17/rising-temperatures-may-increase-flood-risk-through-river-whiplash-study-finds">Continue reading...</a>

#climatecrisis #rivermanagement Rising temperatures may trigger a dangerous increase in “hydroclimatic whiplash” in rivers that would make traditional approaches to flood and drought planning insufficient, a study has found. www.theguardian.com/environment/...

“Rising temperatures may trigger a dangerous increase in “hydroclimatic whiplash” in rivers making traditional approaches to flood and drought planning [and existing infrastructure] insufficient…rivers will experience increasingly rapid transitions between heavy downpours and long dry spells.”

Rising temperatures may trigger a dangerous increase in “hydroclimatic whiplash” in rivers that would make traditional approaches to flood and drought planning insufficient, a study has found. (Guardian)

Heatwaves in US rivers increasing up to four times faster than air heatwaves Research Heatwaves in US rivers increasing up to four times faster than air heatwaves The Mississippi River, pictured here near St. Paul, Minnesota, run from northern Minnesota to the Gulf of Mexico. Credit: Mathew Benoit/Unsplash . All Rights Reserved . Expand September 22, 2025 By Kevin Sliman Editor's note: The authors of the paper "Riverine heat waves on the rise, outpacing air heat waves," Kayalvizhi Sadayappan and Li Li, were recognized as finalists for the Proceedings of the National Academy of Sciences 2025 Cozzarelli Prize . UNIVERSITY PARK, Pa. — As the frequency and intensity of heatwaves increase across the U.S., a similar but more striking phenomenon is occurring in American rivers. Analysis of data from nearly 1,500 sites in the contiguous United States between 1980 and 2022 revealed that heatwaves in rivers are accelerating faster than and lasting nearly twice as long as air heatwaves, according to a new study by researchers at Penn State. “Rivers are often thought of as safe and cool havens protected from extreme temperatures,” said Li Li, corresponding author and Barry and Shirley Isett P…

Rising temperatures may trigger a dangerous increase in “hydroclimatic whiplash” in rivers that would make traditional approaches to flood and drought planning insufficient, a study has found. www.theguardian.com/environment/...

"It's just the weather" hydroclimatic whiplash - "Swings from dry to wet conditions may increase the risk of flash flooding, because intense rainfall on dry, hardened soil is less able to infiltrate the ground" Rising temperatures = precipitation = heavy rain = floods #GlobalBoiling