The way the federal government analyzes intense rain events isn’t keeping up with the reality of climate change, and that has serious implications for infrastructure projects and the availability of, and rising cost of, flood insurance.
Severe rainstorms, sometimes described as “atmospheric rivers” or “torrential thunderstorms,” are making the concept of a “1-in-100-year flood event” obsolete, according to a report from First Street Foundation, an organization focused on weather risk research.
These events are occurring more frequently due to the impact of climate change, but federal rainfall analysis, managed by the National Oceanic and Atmospheric Administration, isn’t keeping up with the new weather conditions, First Street says.
Half the people in the U.S. live in a county where a 1-in-100-year flood is at least twice as likely now as it had been in the past, coming once every 50 years instead of every 100 years. In some areas, a so-called “1-in-100-year” rainfall could now happen far more frequently—as often as every 5 to 10 years.
The outdated analysis has serious implications for the way infrastructure projects are initiated and designed. And, because FEMA’s federal flood insurance program greatly underrepresents the number of people that could fall into FEMA’s Special Flood Hazard Areas, millions of Americans may be unaware of their current flood risk.
Inaccurate flood risk data due to underestimating the impact of rainfall also impacts the cost and availability of flood insurance—this is especially true for property that isn’t close to the ocean or inland bodies of water.
The government is working to remedy the situation, though. NOAA, as reported by CNN, says it is working on a revamped approach to its rainfall analysis that is expected to be completed in 2027.
Related Stories
MFPRO+ News | Jan 12, 2024
As demand rises for EV chargers at multifamily housing properties, options and incentives multiply
As electric vehicle sales continue to increase, more renters are looking for apartments that offer charging options.
Student Housing | Jan 12, 2024
UC Berkeley uses shipping containers to block protestors of student housing project
The University of California at Berkeley took the drastic step of erecting a wall of shipping containers to keep protestors out of a site of a planned student housing complex. The $312 million project would provide badly needed housing at the site of People’s Park.
MFPRO+ News | Jan 8, 2024
Canada turns to 1940s strategy to speed up housing construction
To address a severe housing shortage, Prime Minister Justin Trudeau’s administration has begun a housing construction strategy pioneered in the years after World War 2. The government aims to use a catalog of pre-approved home designs to reduce the cost and time to construct homes.
Green | Jan 8, 2024
DOE releases RFI on developing national definition for a Zero Emissions Building
The Department of Energy released a Request for Information (RFI) for feedback from industry, academia, research laboratories, government agencies, and other stakeholders on a draft national definition for a Zero Emissions Building.
Codes and Standards | Jan 8, 2024
Australia to be first country to ban engineered stone countertops
In 2024, Australia will be the first country to ban engineered stone countertops. The ban came after a years-long campaign supported by doctors, trade unions, and workers over concerns that the material was causing increased silicosis cases among workers cutting and handling it.
Roofing | Jan 8, 2024
Researchers devise adaptive roof tile concept that adjusts to ambient temperatures
Scientists at the University of California Santa Barbara published a paper that proposes adaptive roof tile technology that can adjust to ambient temperatures. Using a wax motor, tiles could switch from a heating or cooling state enabling savings on heating and cooling costs.
Mass Timber | Jan 2, 2024
5 ways mass timber will reshape the design of life sciences facilities
Here are five reasons why it has become increasingly evident that mass timber is ready to shape the future of laboratory spaces.
Resiliency | Jan 2, 2024
Americans are migrating from areas of high flood risk
Americans are abandoning areas of high flood risk in significant numbers, according to research by the First Street Foundation. Climate Abandonment Areas account for more than 818,000 Census Blocks and lost a total of 3.2 million-plus residents due to flooding from 2000 to 2020, the study found.
Sustainability | Jan 2, 2024
Los Angeles has plan to improve stormwater capture and source 80% of water locally
Los Angeles County’s Board of Supervisors voted for a plan to improve stormwater capture with a goal of capturing it for local reuse. The plan aims to increase the local water supply by 580,000 acre-feet per year by 2045.
MFPRO+ News | Jan 2, 2024
New York City will slash regulations on housing projects
New York City Mayor Eric Adams is expected to cut red tape to make it easier and less costly to build housing projects in the city. Adams would exempt projects with fewer than 175 units in low-density residential areas and those with fewer than 250 units in commercial, manufacturing, and medium- and high-density residential areas from environmental review.
