Breaking News: Floods

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As floodwaters surge along major rivers in the midwestern United States, a new study from Washington University in St. Louis suggests federal agencies are underestimating historic 100-year flood levels on these rivers by as much as five feet, a miscalculation that has serious implications for future flood risks, flood insurance and business development in an expanding floodplain.

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The National Weather Service this summer is introducing new online forecasts based on research by a team of risk communication experts at NCAR. The new graphics will better communicate local forecasts and potential weather threats for the millions of Americans who rely on the NWS website.

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From infrastructure to climate change, the disaster impacts areas of daily life.

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As with rivers, civilizations across the world rise and fall. Sometimes, the rise and fall of rivers has something to do with it. At Cahokia, the largest prehistoric settlement in the Americas north of Mexico, new evidence suggests that major flood events in the Mississippi River valley are tied to the cultural center’s emergence and ultimately, to its decline.

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Devastating floodwaters such as those experienced during Iowa's Flood of 2008 are notoriously difficult to predict. So a team of University of Iowa mathematicians and hydrologists collaborating with the Iowa Flood Center set out to gain a better understanding of flood genesis and the factors impacting it. They were able to do this by zeroing in on the impacts of certain rainfall patterns at the smallest unit of a river basin: the hillslope scale.

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The U.S. Midwest and surrounding states have endured increasingly more frequent flood episodes over the past half-century, according to a study from the University of Iowa.

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University of Adelaide researchers are devising new methods to more accurately estimate long-term flood risk.

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University of Iowa researchers examined how changes in rainfall amounts and an increase in the amount of acreage used to grow such crops as corn and soybeans can affect the volume of river water flow in the U.S. Midwest.

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Flooding could be severe this spring. Emergency physician and disaster preparedness expert Dr. Sarah Nafziger says be ready.

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Los Angeles, a metropolis perched on the edge of a coast, can expect to experience sea level rise of as much as two feet due by 2050 due to climate change, according to current projections.

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Two University of Iowa researchers recently tested the ability of the world’s most advanced weather forecasting models to predict the Sept. 9-16, 2013 extreme rainfall that caused severe flooding in Boulder, Colo.

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When enough raindrops fall over land instead of the ocean, they begin to add up. New research led by NCAR shows that three atmospheric patterns drove so much precipitation over Australia in 2010 and 2011 that the world’s ocean levels dropped measurably.

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In the aftermath of Superstorm Sandy, New York Sea Grant (NYSG) has responded by funding two new research projects on Long Island's South Shore valued at $50,000. These projects add to NYSG’s suite of research and outreach projects that address the state’s coastal hazards.

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New research indicates that flash flooding that swept through the mountain town of Leh, India, in 2010 was set off by a string of unusual weather events similar to those that caused devastating flash floods in Colorado and South Dakota in the 1970s.