# Identifying the Most Underestimated Climate Threats in the United States Experts analyze why compound hazards and systemic failures pose the greatest risks to society. - **Source:** [Gizmodo](https://gizmodo.com/) - **Published:** 2026-10-17 - **Topic:** [Business](https://brifing.si/c/business) - **Original article:** - **On Brifing:** https://brifing.si/s/b32ce7dc-11fb-443e-9316-888e9454cb04 ## The Rising Climate Crisis Rising global temperatures are intensifying extreme weather events across the United States, causing hundreds of billions in annual damages. Despite these mounting risks, federal support for disaster preparedness has significantly declined. Recent policy shifts have rescinded greenhouse gas regulations, while FEMA lost over 17% of its staff during 2025 alone. ## The Danger of Compound Hazards Experts identify compound hazards—multiple climate disasters occurring simultaneously or in close succession—as a critically underestimated threat. For example, coastal defenses compromised by erosion during one storm leave communities vulnerable to subsequent events. Preparing for a hurricane followed immediately by an extreme heat wave remains a logistical and structural challenge. ## Heat as a Silent Killer Heat waves are among the deadliest climate extremes, yet their societal impacts are frequently underestimated. The 2021 Pacific Northwest heat wave resulted in approximately 1,400 human deaths and the loss of a billion marine animals. Many regions lack early warning systems, leaving populations unprepared for chronic heat exposure and its health consequences. ## Wildfire Risks and Uncertainty Increasing drought and heat are fueling severe wildfire activity across the American West, threatening critical infrastructure and human health. While forecasters can predict high-risk weather, the precise timing and location of ignitions remain unpredictable. The 2020 fire season demonstrated how smoke can blanket the entire country, yet adequate planning remains absent. ## Data Gaps in Vulnerable Areas Tracking the human and ecological impacts of billion-dollar disasters is hindered by limited data in vulnerable communities. Low-income, indigenous, and minority populations often lack the necessary monitoring infrastructure to anticipate future risks. Because predictive models rely on existing data, these communities remain the least prepared for the compounding threats they face. ## Perception vs. Actual Risk Research indicates a significant misalignment between actual climate risk exposure and public perception. In regions like the Pacific Northwest and Appalachia, residents often underestimate heat-related dangers, leading to delayed adaptation investments. Conversely, areas with historical heat exposure show more robust alignment, proving that past experiences heavily influence how communities evaluate climate threats. ## Grid Collapse and Urban Vulnerability A high-impact, low-probability scenario involves an extreme heat wave triggering a total power grid collapse. With rising electricity demands from urban data centers, such a failure in cities like Phoenix could result in more casualties than major historical conflicts. This compound risk remains a primary concern for experts focused on urban planning. ## The Failure to Reduce Emissions The fundamental climate threat is the global failure to meaningfully reduce greenhouse gas emissions. Despite decades of scientific warnings, emissions have not peaked, and investments in net-zero technologies remain insufficient. Current policies suggest a 75% chance of 5.4 degrees Fahrenheit warming by 2100, a trajectory that remains largely undiscussed in public discourse. ## Institutional and Economic Barriers Current economic and governance institutions prioritize consumer freedom over climate stability, allowing fossil fuel producers to operate without accounting for environmental costs. Authoritarian political trends further threaten meaningful climate action. Experts argue that implementing a significant carbon tax could align capitalist incentives with the urgent need for rapid, large-scale decarbonization efforts. ## The Need for Systemic Change Addressing the climate crisis requires moving beyond debating individual threats to tackling the root cause of emissions. The doubling of warming rates since 2015 highlights the urgency of the situation. Without systemic changes to policy, energy production, and infrastructure planning, the nation remains on a path toward irreversible and dire outcomes. ## Strategic Preparedness and Resilience Building resilience requires a dual approach: aggressive emissions reduction and robust adaptation strategies for the built environment. Communities must invest in infrastructure that can withstand compound hazards while improving data collection for vulnerable populations. Protecting the public from unacceptable risks is a collective responsibility that demands immediate, science-based policy intervention today. ## Sources covering this story - https://gizmodo.com/which-climate-threat-is-the-us-most-underestimating-2000826406 — --- _Summary written by Brifing from the original reporting. Copyright in the original article belongs to its publisher; read the full piece at the link above._