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Between 2008-2011 the department worked with local governments to make recommendations for the Very High Fire Hazard Severity Zones within Local Responsibility Area (LRA). The hazard maps are being updated to more accurately reflect the zones in California that are susceptible to wildfire. CAL FIRE used the best available science and data to develop, and field test a model that served as the basis of zone assignments. The model evaluated the probability of the area burning and potential fire behavior in the area. Many factors were included such as fire history, vegetation, flame length, blowing embers, proximity to wildland, terrain, and weather. CAL FIRE updated the Fire Hazard Severity Zones (FHSZ) for State Responsibility Areas (SRA) (maps effective April 1, 2024). Using these same processes and models, CAL FIRE updated the FHSZs for LRA, releasing the updated maps February 25, 2025. 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