Articles tagged with Floods
Citizen scientists will help VIMS researchers map the reach of this year's King Tide using a smartphone app, providing critical data for improving coastal flooding models. The project aims to better understand the risk of recurrent flooding in Hampton Roads and lay the groundwork for a volunteer data-collection network.
Indiana University scientists have developed a new method to predict the effectiveness of molecules that extract toxic elements from the environment. The discovery could significantly reduce the volume of nuclear waste, as well as improve water purification and soil remediation techniques.
Irma dropped extremely heavy rain, up to 20 inches, across Cuba and Florida, causing severe flooding. The post-tropical cyclone weakened over Georgia, but its remnants produced additional 1-3 inch rain accumulations across the southeastern US.
A Rice University and Texas A&M-Galveston study found that FEMA's 100-year flood plain maps failed to capture 75 percent of flood damages from five serious floods. The research suggests that innovative computational tools can build more predictive maps, improving flood risk assessments.
A new study models the impact of changing precipitation patterns in northern European and North American cities, finding that urban runoff is strongly controlled by built-up versus vegetated surfaces. The research also highlights the importance of wintertime climate for northern cities' flood risks.
Researchers warn that US East Coast cities are under threat from more frequent and severe flooding due to the region's slow subsidence into the Atlantic Ocean. Human activities such as groundwater extraction and reservoir creation have accelerated this process, with some areas sinking at a rate of up to three millimeters per year.
Post-Tropical Cyclone Harvey is spreading into the Ohio Valley, bringing heavy rain and flash flooding to parts of Texas, Louisiana, Kentucky, and Indiana. The system's minimum central pressure is 1002 millibars, and it is expected to weaken by Saturday, Sept. 2.
Hurricane Harvey's rainfall caused widespread saturation in southeastern Texas, which already showed signs of moisture levels near 20-40% before the storm made landfall. NASA's data also revealed exceptionally wet conditions in southwest Houston after Harvey's arrival, exacerbating the flooding issue.
IMERG data show over 30 inches of rainfall in the Houston metro area, while Harvey dropped over 40 inches in southeastern Texas. The storm is expected to produce catastrophic flooding and life-threatening conditions in parts of Texas and Louisiana.
NASA's Aqua satellite and International Space Station provided critical data on Tropical Storm Harvey, illustrating growing flood threats along the Texas coast. The storm is expected to produce heavy rainfall accumulations of 7-13 inches, with isolated totals reaching 50 inches in some areas.
A new study predicts shorter flood intervals for US coastal cities when considering both ocean water level rise and river flow, increasing overall flood risk. Researchers warn that as sea levels continue to rise, compound effects will further exacerbate coastal flooding.
Tropical Storm Harvey is expected to produce heavy rainfall accumulations of 15-25 inches over the upper Texas coast and into southwestern Louisiana. The storm's center is located near Port O'Connor, Texas, with maximum sustained winds near 40 mph and slight re-strengthening possible later today.
Using satellite data, NASA calculated Tropical Storm Harvey's accumulated effects of rain, with totals reaching on the order of 20 inches near Galveston Bay and over 10 inches in western Louisiana. The analysis shows widespread massive flooding across the region, similar to Tropical Storm Allison in 2001.
Tropical Storm Harvey showed powerful storms that could produce heavy rainfall, with cloud top temperatures as cold as minus 63 degrees Fahrenheit. The storms were detected by NASA's Aqua satellite and identified areas extending from southeastern Texas into southeastern Louisiana.
Tropical Storm Harvey continues to generate significant rainfall over southeastern Texas, with forecasters predicting catastrophic flooding. NASA satellite imagery shows the storm's elongated center of circulation and extensive thunderstorms stretching into Louisiana.
Researchers discovered four major outburst floods at Lake Catalina, releasing up to 240 Hiroshima-bombs' worth of energy. The next flood is predicted to occur soon, possibly in 2018-19, with scientists attributing the increase to global warming and glacier melt.
A new study across Austria, England, and Romania finds that both public and private schemes can improve risk reduction behaviors and reduce losses in future disasters. The study suggests that insurers and governments need to better coordinate their efforts to design efficient, socially just, and politically feasible solutions.
Scientists from UC Santa Cruz and the Nature Conservancy released a report identifying lands in Florida that are potential targets for projects with multiple benefits, such as reduced flood exposure, conservation, and remediation of social vulnerability. The study proposes prioritizing property buyouts based on these factors to support...
A global analysis of rainfall and rivers reveals more intense flooding in cities and smaller catchments, coupled with a drier countryside. This is attributed to rising local temperatures causing more evaporation from moist soils, leading to reduced water flows in rural areas.
A study by Vienna University of Technology reveals that climate change has a real impact on flood events in some regions, causing them to shift in timing. The magnitude of the flood does not provide enough information to detect the impact of climate change, whereas the timing provides valuable insights into its effects.
An analysis of 50 years' worth of data reveals that climate change is causing rivers to flood earlier in the spring in western and northeastern Europe. This shift is largely attributed to changes in soil moisture retention and increased snowmelt due to warmer temperatures.
The study reveals that ancient China experienced four warm epochs, including the 20th century, with temperatures comparable to current levels. This challenges the idea that modern warming is unprecedented in recent history.
A global study concludes that building dikes to reduce flood damage yields economic benefits, outweighing initial costs. The researchers found that some regions can even avoid higher flood damages by 2080 with effective investment in flood protection measures.
A global framework study shows that new dikes can effectively address flood risk, with benefits outweighing costs. The research provides critical information for policymakers, identifying regions where efficient investment in flood protection is needed.
LSU researchers are awarded grants from the National Academies of Sciences and Robert Wood Johnson Foundation to study inland-coastal environmental conditions, community health, and adaptive capacity. The projects aim to improve resilience in Gulf Coast communities, with a focus on building a Culture of Health.
Heavy rain caused significant flooding in the US Midwest from July 7 to 14, 2017. NASA's satellite data showed parts of Wisconsin, Illinois, Indiana, and Ohio received over 6 inches of rain.
A University of Illinois study concludes that the Missouri River requires a multi-state cooperation plan to manage its dynamics and mitigate damages from flooding and erosion. Human activities such as dam construction have altered the river's course, causing sedimentation and increasing flood risks.
Tropical Storm Nanmadol caused severe flooding and one death in southwestern Japan. The GPM satellite measured intense precipitation bands, with rain falling at a rate of over 3.3 inches per hour in an area near the Korea Strait.
Research by Lancaster University found that remote Amazonian cities are more vulnerable to environmental pollution, contaminated water, and health risks. Experts emphasize the need for 'adaptive capacity' through improved public services and disaster response planning to mitigate these effects.
A team of researchers led by Cody Ross measured water flow in the vadose zone, a critical region under the soil surface. They found that in the southeastern Canadian Prairies, old water accounted for a significant portion of streams, contradicting previous research.
A new study from the University of Waterloo found that strong individuals should prioritize their own safety before attempting to help weaker people in emergency situations. The research used computer modeling to simulate a flooded subway station, finding that overall survival rates were higher when strong members reached safety first.
A recent study by Louisiana State University researchers found that urban development has declined in coastal flood zones nationwide, but grown in inland counties. This trend poses a significant risk to populations living in inland flood zones, who may not be aware of the hazards despite migrating to coastal areas.
A research team found that unusual tropical conditions, the stratospheric polar vortex, and climate warming contributed to record UK rainfall in winter 2013-14. The study shows a 10-15% contribution from climate change, with main causes being atmospheric dynamics linking the UK to the tropics and stratosphere.
NASA's Aqua satellite captured images of Tropical Depression Calvin before it made landfall in southwestern Mexico on June 12. The depression brought heavy rain and created flooding across several Mexican states, including Oaxaca, Guerrero, Chiapas, Tabasco, and Veracruz.
A new study by researchers at Princeton and Rutgers universities found that sea-level rise will amplify moderate flooding in the southeastern US, while exacerbating severe flooding in areas like Seattle. Cities may need to prepare for more frequent severe events rather than common but less severe floods.
The iSeeFlood app, developed in 2016, is designed to gather data on flash floods, which can be dangerous to pedestrians and motorists. The app, which has now been made available for iPhones, encourages users to report flooding incidents, providing valuable information for cities and emergency services.
The Atlas of the Human Planet 2017 reveals that one out of three people worldwide is exposed to earthquakes, with 414 million living near active volcanoes. Exposure to natural hazards has doubled globally over the past 40 years, primarily due to urbanization and population growth.
A study by researchers at Binghamton University found that women who experienced higher levels of flood-related stress and displayed decreased pupil dilation to emotional faces were more likely to experience increases in depressive symptoms following the flood. This suggests that pupil dilation analysis could be used to identify those ...
A new tool developed for China's Yellow River can predict and prevent its frequent floods, threatening 80 million people. The formula calculates sediment transport, enhancing the sustainability of eroding coastlines globally.
Researchers created a physics-based sediment transport model to accurately describe the Yellow River's sediment load. The formula can be applied to study eroding coastlines worldwide and mitigate Huanghe floods, threatening 80 million people.
A team of researchers discovered that the Western Amazon sank twice, with ocean water from the Caribbean flooding the region for less than a million years. The study found distinct layers of marine pollen separated by non-marine types, as well as shark teeth and mantis shrimp fossils.
US bridges may be more vulnerable than previously thought, according to a new Stanford study. The research found that frequent flooding and extreme events driven by climate change could lead to increased collapses, with up to $250 billion in direct costs.
Scientists at University of Edinburgh have found that landslides in southern Himalayan regions can increase flood risk by altering river paths with gravel and pebbles, while softer rocks in northern regions produce dispersed sand downstream. The study helps improve flood risk maps for the Ganga Plain, affecting millions.
A study led by UK Centre for Ecology & Hydrology finds that global warming is responsible for tripling of extreme West African Sahel storms in the last 35 years. Climate change will increase the risk of more frequent and severe flooding, as well as poor sanitation-related diseases in West African cities.
Heavy rainfall in Mocoa, Colombia triggered devastating flooding and mudslides that killed over 250 people. NASA's GPM mission provided crucial data on precipitation from its orbit, helping estimate the amount of rain that fell near the affected area.
NASA's Suomi NPP satellite captured an image of Ex-Tropical Cyclone Debbie over Queensland on March 29, 2017. The system's clouds stretched from Townsville to Brisbane along the coast, with heavy rainfall expected in central and southeastern regions.
A new study reveals that much of Honolulu and Waikiki is at risk of groundwater inundation due to sea level rise. Groundwater levels are expected to rise by up to two feet, leading to flooding in the urban core, with 86% of active cesspools likely currently inundated.
Flood insurance is becoming unaffordable for many NYC households, with 33% projected to struggle financially if updated FIRM rates are adopted. The RAND Corporation study proposes affordable programs, including means-tested financial assistance and grants, to mitigate this burden.
A study by Colorado State University researchers found that an extreme flooding event in 2013 eroded over 500,000 cubic meters of sediment, equivalent to 115 years of weathering products. The flood also discharged large amounts of organic carbon and wood into reservoirs, affecting water storage capacity.
Heavy rainfall in Peru led to extensive flooding, landslides, and loss of life. NASA's Global Precipitation Measurement mission provided data on precipitation rates and totals, revealing storms dropping heavy rain at rates of over 137 mm per hour.
A new study projects significant increases in extreme sea levels along Europe's coasts by 2100, threatening millions of people with annual flooding. The research predicts that 5 million Europeans could face the risk of coastal flooding every year if greenhouse gas emissions continue to rise.
Researchers found that rivers in regions with high erosion rates transport more sediment, which adjusts the channel geometry to moderate flows. This challenges the threshold channel model, which predicts a specific grain size range for gravel-bedded rivers.
Researchers tracked social media posts with specific tags before extreme weather events to identify areas at risk. This early warning system has the potential to improve prediction and monitoring of floods and other natural hazards, saving lives and protecting homes.
A new epoch name could raise awareness about humanity's planetary-scale impact and encourage action on climate change. However, it may also perpetuate technological hubris and ecomyopia, a phenomenon where societies ignore or fail to act on ecological information.
A new study finds that cumulative hazards from nuisance flooding in US cities will cost more than extreme events like Hurricane Katrina or Superstorm Sandy over time. The research predicts that by 2050, cities like Miami and Seattle may experience up to 700 hours of nuisance flooding per year.
The NASA-NOAA's Suomi NPP satellite captured a night-time image of the ex-tropical cyclone, showing it had become elongated as it weakened. The storm is expected to continue weakening as it tracks further inland on February 16, bringing heavy rain and localized flooding to parts of South Africa.
A new research framework developed by the University of Queensland aims to identify and track ecosystem services at risk due to growing human demand. The framework allows for analysis of supply and demand, natural system condition, and future demand changes, providing a basis for global assessments.
Researchers at the University of Minnesota have discovered a 500-year cycle of flooding in central China, which can be used to predict broad precipitation patterns in the future. The findings provide insight into climate change over time and improve understanding of monsoon regions.
NASA used its Global Precipitation Measurement mission to analyze heavy rainfall in southern Thailand, which resulted in record-breaking totals. The analysis showed extreme rainfall of over 700 mm over the Gulf of Thailand and greater than 500 mm on land., Rainfall has increased significantly over Thailand during this La Nina year.
NASA's TRMM-based Multi-satellite Precipitation Analysis reveals higher-than-average precipitation in California due to the Pineapple Express, causing widespread flooding and mudslides. The atmospheric river event has brought much-needed relief but also poses significant challenges.