Compound risk of wildfire and inaccessible shelters is disproportionately impacting disadvantaged communities

Abstract

This study proposes measuring access to shelters and wildfire risks in tandem rather than in isolation to prevent wildfires from turning into human disasters. By leveraging a human-centered design approach in California, which has an active wildfire history and experience with some of the deadliest wildfires, three key findings are discerned. First, California experiences undesirable resource allocation where regions with a high risk of wildfire are surrounded by regions with a low level of access to emergency shelters, and regions with a low risk of wildfire are surrounded by regions with a high level of access to emergency shelters. Second, neither access to shelters nor wildfire risk is evenly distributed across space. This uneven distribution, however, discriminates against exurban areas. As one moves away from core cities, higher wildfire risk and comparatively limited access to emergency shelters are noticed, underscoring the heightened susceptibility of exurban areas to wildfires. Third, in contrast with existing research solely focusing on wildfire risk, it is revealed that the elderly, people with disabilities, and Hispanics are at a higher risk of experiencing high wildfire risk and low access to shelters. The findings suggest instilling equity into wildfire preparedness strategies while minimizing the gap in access to resources between disadvantaged and advantaged communities, given the trichotomy of exposure to the hazard (risk of wildfire), proximity to aid (access to shelters), and vulnerability to threat (community characteristics).