57% of US structures fall within a “natural hazard hotspot”

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To create risk maps, the study combined development data from Zillow with natural disaster risk models. Risk hotspots describe areas in the United States where the probability of a natural disaster is in the highest 10%, and researchers hope that better data will help policymakers make decisions. Better plans for the future.

Natural hazards such as hurricanes and wildfires may pose increasing threats to the United States, and it’s not just because climate change is helping to make extreme weather events more common. Precarious human development also increases risks.

This is the conclusion of a recent study published in Earth’s Future, which aims to map the contiguous regions of the United States where natural hazards pose the highest risks to people and structures.

The study found that 57 percent of buildings — such as homes, schools and offices — are in “danger hotspots,” which cover about a third of the country. Hotspots are defined as areas where the probability of an earthquake, wildfire, flood, hurricane, or hurricane falls in the top 10 percent. There are about 1.5 million buildings in hotspots where there are especially multiple risks.

“These critical levels of exposure are the legacy of decades of sustainable growth and indicate our inability, lack of knowledge or unwillingness to limit development in risky areas,” the researchers wrote. “Development in these areas continues to grow faster than the nation’s baseline rates, foreshadowing greater future losses even if the effects of climate change are not considered.”

Earthquakes, fires and floods Oh my God!

Nature affected the United States Between 1960 and 2015, natural disasters killed at least 32,000 people and cost the nation about $850 billion. While the authors note that economic losses from natural hazards are “escalating dramatically” despite a decade-long pattern of slowing development across the United States, it is worth noting that natural disasters in recent decades have killed fewer people than Ever.

In any case, a better understanding of risky development patterns is key to mitigating future risks posed by natural hazards, the researchers note.

The map of the United States shows “hotspots” where the probability of natural hazards falls in the top 10 percent. The map depicts earthquake hotspots (purple), floods (turquoise), tornadoes (grey), tornadoes (yellow), and wildfires (peach).

To determine the risk of natural hazards, researchers combined property and housing data from Zillow with natural disaster risk models based on information from sources such as the US Geological Survey’s (USGS) Earthquake Risk Program. The findings highlight risky development patterns that vary by region and type of risk. For example, expanding previously unused land increases exposure to hazards such as hurricanes, floods, and wildfires, while adding more people and structures to certain urban areas can enhance earthquake and hurricane risks.

Smarter growth is needed

Sometimes developing one type of risk can reduce the risk but enhance another type. For example, some riverside cities are expanding beyond their floodplains, which means that new suburban developments do not face significant flood risks. However, the expansion of people and structures in these combustible landscapes increases exposure to wildfires.

“This relatively recent composite phenomenon indicates the potential for a significant increase in losses from wildfires in the near future,” the researchers wrote.

This “combined phenomenon” is a good example of how development patterns and climate change can increase the risk of hazards: higher temperatures are causing drier conditions and therefore more wildfires. Meanwhile, more people are moving into combustible landscapes.

The researchers hope that better data will help policy makers and other researchers develop better risk mitigation plans. Specifically, they note that “accurate” data can help planners avoid the “dam effect,” which describes how efforts to protect ourselves from natural disasters can backfire with unintended consequences.

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