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Data

NOAA updates mapping tool to illustrate disaster risk and vulnerability at a community level

Dan SymondsBy Dan SymondsJuly 28, 20223 Mins Read
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The National Oceanic and Atmosphere Administration (NOAA) has launched a comprehensive update to its Billion Dollar Disasters mapping tool, which now includes US census tract data to provide community-level awareness of hazard risk, exposure and vulnerability across more than 100 combinations of weather and climate hazards.

The enhanced interactive maps from NOAA’s National Centers for Environmental Information (NCEI) cover all 50 states and the District of Columbia, and provide data for more than 72,000 US census tracts, which are small subdivisions of counties that average around 4,000 inhabitants. Users can now visualize a community’s combined physical exposure, socioeconomic vulnerability, and markers of resilience to natural hazards on a finer scale than ever before.

Dr Rick Spinrad, NOAA administrator, said, “The updated tool will provide a better understanding of how weather, ocean and climate disasters impact many Americans at the community level, and help guide targeted preparation and mitigation efforts as we build a climate-ready nation. This hyper-local information advances NOAA’s vision for resilient communities and economies, and will strengthen our support for vulnerable populations that face outsized weather, ocean and climate risks.”

The census tract data builds on county-level data added to the mapping tool last year. The weather and climate hazards displayed through the tool include severe storms and tornadoes; drought events and heatwaves; hurricanes and tropical storms; wildfires; river-basin and urban flooding; and winter storms, freeze events and cold waves.

Robert L Santos, director, US Census Bureau, said, “This tool helps the public better understand potential impacts of disasters on the American people and our economy. It illustrates how combining resources from the Census Bureau and NOAA can advance each agency’s mission. We are pleased to see American Community Survey data being used in this new tool. We’re excited to collaborate with NOAA in the future on enhancements to the tool that incorporate even more of our data.”

The new maps also provide select socioeconomic vulnerability information using the CDC Social Vulnerability Index, which is derived from the Census Bureau’s American Community Survey data. There are numerous factors found in the census tract data that can indicate potential vulnerability, including: socioeconomic status; household composition and disability status; minority status and language; and housing type and transportation availability.

Examining this information can help to identify areas where both risk exposure and socioeconomic vulnerability is high. Decision-makers can then use this information to better understand where to focus hazard mitigation planning and investment, especially in areas where resources are sparse.

Adam Smith, billion-dollar disaster expert for NOAA NCEI, said, “This mapping tool helps people understand the risk of weather and climate disasters where they live, at a time when we’re seeing more costly extreme weather events. For example, a user can explore multiple hazard risks, such as the cascading impacts of drought, wildfire and flooding on vulnerable populations in the US Southwest or see how combined hurricane, flooding and severe storm events across the Gulf coast could severely impact their neighborhood.”

The new tool comes at a time when the number and cost of billion-dollar disasters in the USA are rising. Since January of 2020, the nation has experienced 51 separate billion-dollar weather and climate disasters, which totaled more than US$275bn in damages and killed nearly 1,000 people. From January to June 2022, the USA has already been affected by nine separate billion-dollar disasters.

Previous ArticleNASA unveils contractors to undertake definition-phase studies for NOAA’s GeoXO satellites
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