The California Department of Forestry and Fire Protection (Cal Fire) has released new fire-hazard severity maps that significantly expand the areas at risk in Central California. On Monday, the agency announced that over 1.2 million acres have been added to fire hazard zones, affecting 15 counties, including Monterey and San Luis Obispo. These updates mark the first significant change in more than a decade.
Previously, many areas in the agricultural Central Valley had no designated fire hazard zones. Now, thousands of acres are included, with Monterey County seeing its fire-hazard acreage increase more than fourfold and San Luis Obispo County increasing over fivefold. In total, more than 300,000 acres are now classified in severity zones where stricter fire safety regulations apply.
The updated maps are part of a two-month rollout by Cal Fire, which aims to improve fire safety in local responsibility areas. These areas are where city and county fire departments are tasked with responding to fires. The new maps introduce “high” and “moderate” severity zones, in addition to the existing “very high” zones. This change follows a legislative order from 2021 that required Cal Fire to update its maps to include these new classifications.
The updated regulations include stricter building codes for new constructions. Homeowners will now need to use fire-resistant materials, install multi-pane windows, and cover vents to prevent embers from entering homes. This means that many more properties will have to meet these safety standards, potentially affecting building practices across the state.
The maps were updated using the latest climate and weather data, which helps assess the likelihood and intensity of wildfires in various areas. Cal Fire also considers the surrounding vegetation and how far fire could spread into urban regions.
In September 2023, Cal Fire had already updated its maps for state responsibility areas, and the newly released maps focus on local responsibility areas. This rollout is being done in sections, with the Southern California maps expected to be released by March 24.
The changes are particularly notable in counties with significant agricultural land, such as Fresno, Madera, Tulare, and Kern, where many previously had no fire hazard designations. The new maps reflect the growing awareness of wildfire risks in these regions, especially as development continues to spread into areas that may be vulnerable.
Local governments now have five months to gather public feedback on the new maps before officially adopting them. While local jurisdictions can increase the severity of zoning, they cannot decrease it. Cal Fire emphasizes that these maps are about assessing fire hazard rather than predicting specific property damage, which means they do not directly influence insurance rates.
As the state prepares for the upcoming fire season, these new maps and regulations aim to enhance safety and preparedness in areas that have long been at risk.