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The outdated analysis has serious implications for the way infrastructure projects are initiated and designed.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
| Sep 11, 2013
White paper examines Joint Commission requirements for NFPA codes in healthcare
The healthcare industry has experienced great attention from The Joint Commission concerning fire and life safety issues.
| Sep 11, 2013
San Francisco expected to drop firefighter air tank refilling station rule for skyscrapers
San Francisco is poised to drop a requirement that skyscrapers have refill stations so firefighters can recharge their air tanks during a blaze. The city has required that new high-rises have the air refill systems for about ten years.
| Sep 5, 2013
State legislatures continue to raise the bar on green school construction
Since the beginning of 2013, the USGBC has followed more than 125 bills across 34 states that seek to advance healthy, high-performing schools.
| Sep 5, 2013
Construction industry groups create coalition to respond to new OSHA silica rule
A group of 11 construction trade associations has created the Construction Industry Safety Coalition in response to the Occupational Safety and Health Administration’s (OSHA) proposed rule on silica for the construction industry.
| Sep 5, 2013
Red tape delays California county jail construction projects
California authorized $1.2 billion for jail construction in 2007, but not a single county in the state has completed a jail project since then.
| Sep 5, 2013
New CM-at-risk and design-build options create controversy in Ohio
Some contractors say Ohio's new system puts small and midsize construction companies at a disadvantage.
| Sep 5, 2013
Outdated codes slowed disaster recovery in Tuscaloosa, Ala.
Outdated building codes and lack of a master plan slowed the initial rebuilding stage after a devastating tornado leveled parts of Tuscaloosa, Ala. in 2011, according to the city’s mayor.
| Aug 28, 2013
Building collapse prompts legislation to beef up demolition regulations in Philadelphia
Philadelphia City Council will introduce legislation next month to strengthen the regulation of building demolition practices.
| Aug 28, 2013
Rules requiring contractors to boost hiring of veterans criticized
Some businesses are pushing back against proposed rules requiring federal contractors to step up their hiring of returning military service personnel.
| Aug 28, 2013
OSHA moves to reduced exposure to crystalline silica
Under a proposal from the Occupational Safety and Health Administration, the new permissible exposure limit to crystalline silica per cubic meter of air could be changed from 250 micrograms to 50 micrograms.
