Cities with first-time fire zone designations include Santa Monica, La Cañada-Flintridge, South Pasadena, Alhambra, Huntington Beach, Laguna Hills, Chino Hills and Rancho Cucamonga.

These updated hazard zones are part of Cal Fire's "Phase 4" recommendations, focusing on fire severity across Southern California, including L.A. County. Significant portions of L.A., particularly in the foothills and canyon regions, have been designated as Very High Hazard Zones, marked in red on the updated maps.

Cal Fire has released new fire hazard severity zone maps for public review and comment, including maps for Tulare County, Woodlake, and Porterville. The new maps will impact future building projects in high-risk areas, requiring specific construction materials and methods, defensible buffers, and development regulations.