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6.5 Million U.S. Homes Worth Nearly $1.5 Trillion at Risk of Hurricane Storm Surge Damage

Storm Surge Flooding MISHELLA / Shutterstock.com

More than 6.5 million homes along the U.S. Atlantic and Gulf coasts are at risk of storm surge inundation, representing nearly $1.5 trillion in total potential reconstruction costs, according to Corelogic’s 2014 Storm Surge Report. Of that risk, more than $986 billion is concentrated within 15 major metropolitan areas.

While many homes and businesses most vulnerable to hurricane damage are in Federal Emergency Management Agency flood zones, these represent just a fraction of the structures that suffer a hurricane’s effects.

Homeowners who live outside the FEMA flood zones typically do not carry flood insurance, given that there is no mandate to do so, and therefore may not be aware of the potential risk storm surge poses to their properties, Corelogic explains.

Uncertainty about the geographical and meteorological risks may lull many into a false sense of safety.
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“This year’s season is projected to be slightly below normal in hurricane activity, but the early arrival of Hurricane Arthur on July 3 is an important reminder that even a low-category hurricane or strong tropical storm can create powerful riptides, modest flooding and cause significant destruction of property,” said Dr. Thomas Jeffery, senior hazard scientist for CoreLogic Spatial Solutions.

Florida ranks number one for the highest number of homes at risk of storm surge damage, with nearly 2.5 million homes at various risk levels and $490 billion in total potential exposure to damage. Here’s how all 19 states studied stack up, based on number of homes at risk:

State Table (Ranked by Number of Homes at Risk)

At the local level, the New York metropolitan area (including northern New Jersey and Long Island) contains not only the highest number of homes at risk for potential storm surge damage (687,412), but also the highest total reconstruction value of homes exposed, at more than $251 billion. Take a look at the storm surge risk for the top 15 metro areas:

Storm Surge Risk for Top 15 Metro Areas

Corelogic also noted variation in the costs of rebuilding, which does not directly correlate to the amount of property at risk. The total reconstruction cost value of homes along the Atlantic coast is nearly 1 billion, for example, which is approximately double the value of at-risk properties in the Gulf region’s 5 billion.

Hurricane Sandy Rebuilding Task Force Releases Recommendations

Hurricane Sandy damage to New Jersey boardwalk

President Obama’s Hurricane Sandy Rebuilding Task Force released their findings yesterday, sharing 69 recommendations to repair existing damage and strengthen infrastructure ahead of future natural disasters.

The task force encouraged an emphasis on new construction over simple repair, citing the impact of climate change on severe weather events.

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“More than ever, it is critical that when we build for the future, we do so in a way that makes communities more resilient to emerging challenges such as rising sea levels, extreme heat, and more frequent and intense storms,” the report said. Construction designed for increasingly dangerous storms, infrastructure strengthened to prevent power failure and fuel shortage, and a cellular service system that can subsist during disasters are all critical investments to prevent future loss.

Recommendations included streamlining federal agencies’ review processes for reconstruction projects, revising federal mortgage policies so homeowners can get insurance checks faster, and making greater use of natural barriers like wetlands and sand dunes.

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The team also said that planners need better tools to evaluate and quantify long-term benefits of future projects along the shoreline, but did not detail what would be best ecologically and economically.

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According to USA Today, Sen. Charles Schumer (D-N.Y.) said the Sandy task force report shows that “we have much work to do hardening our energy, telecommunications and transportation infrastructure,” and that “the federal government must be a proactive partner with local governments and the private sector.”

Some of the task force’s suggestions have already been put into place. As the AP reported, this includes the creation of new Federal Flood Reduction Standard for infrastructure projects built with government funds and promotion of the Sea Level Rise Tool, which will help builders and engineers predict where flooding might occur in the future.

The government has closed over 99.5% of over 143,000 National Flood Insurance Program claims related to Hurricane Sandy and paid out more than $7.8 billion to policyholders, according to the task force report. The federal government should support local efforts to mitigate future risk by funding local disaster recovery manager positions and encouraging homeowners to take steps to reduce the risk of future damage, which will also make rising flood insurance premiums more affordable, the report said.

The team has also launched Rebuild by Design, “a competition that will attract world-class talent to develop actionable plans that will make the Sandy-impacted region more resilient.”