Understanding California’s Fire Hazard Severity Zone Maps: What It Means for Calimesa Residents.
The California Department of Forestry and Fire Protection (CAL FIRE) uses Fire Hazard Severity Zone (FHSZ) maps to identify areas with the highest potential for wildfires based on factors like topography, vegetation, weather patterns, and historical fire activity.
These maps classify land into three hazard levels in State Responsibility Areas (SRAs):
• Moderate
• High
• Very High
Each level reflects how likely an area is to experience wildfire and how intense those fires could be.
Why It Matters to Calimesa
Calimesa is a city uniquely positioned in the foothills and wildland-urban interface—areas where neighborhoods border natural, undeveloped land. In recent years, the city has experienced serious wildfire threats, including the 2019 Sandalwood Fire, which tragically claimed lives and destroyed homes.
The FHSZ maps are especially relevant to Calimesa for several key reasons:
1. Home Insurance Impacts: Insurers often use FHSZ data to assess fire risk and determine coverage or rates. If your home is in a “Very High” hazard zone, you may face higher premiums or limited availability of coverage.
2. Emergency Preparedness: Residents in higher severity zones are more likely to face evacuations, fire-related property damage, or utility shutoffs during high fire risk periods.
3. Building and Safety Regulations: Homes in “Very High” zones may be subject to stricter building codes, including fire-resistant materials, defensible space requirements, and road access standards.
4. Community Planning: The updated maps help Calimesa officials and planners make informed decisions about land use, new developments, and emergency response strategies.
Recent Updates and What’s Next
In 2023–2024, CAL FIRE began rolling out updated FHSZ maps to reflect changing climate conditions, vegetation growth, and increased wildfire activity. These updates show expanded Very High Fire Hazard Zones, including in parts of Calimesa.
Public comment periods and local meetings have allowed residents to voice concerns and learn how the maps affect them. It’s crucial for Calimesa residents to review their property’s designation and take proactive steps to reduce risk.
Executive Order N-18-25 (PDF)
FHSZ rollout plan (PDF)
What You Can Do
• Check Your Property’s Risk: Visit CAL FIRE’s map viewer to search your address.
• Harden Your Home: Use ember-resistant vents, clear defensible space, and follow the latest fire-safe building guidelines.
• Stay Informed: Sign up for evacuation alerts and stay connected during fire season at Alert RivCo at Rivcoready.org
• Engage with Local Officials: Attend city council meetings or contact local fire authorities to learn more about local fire planning efforts.
Fire Safety Is a Shared Responsibility
As wildfire threats continue to grow in intensity and frequency, tools like the FHSZ maps are essential for protecting lives, homes, and communities. For Calimesa, these maps are more than just lines on a page—they’re a call to action.