Wildfires
The wildfire threat is influenced by a mix of environmental and seasonal factors. Fire danger describes the combination of constant and variable factors, such as fuel, topography, and weather that affect the initiation, spread, and ease of controlling a wildfire in an area.
The type, amount, and dryness of vegetation (grasses, shrubs, trees, etc.) or fuel determine how easily a fire can start and spread.
Topography such as steep slopes can cause fires to move faster uphill, and terrain features can influence wind patterns.
Weather factors such as temperature, humidity, wind speed, and precipitation all play a role in wildfire behavior, with dry and windy conditions significantly increasing fire risk.
Fire Seasons vary by region, often peaking during hot, dry periods with little rain.
Being prepared is the first step to prevent and control wildfires.
- Prepare for Wildfire - Ready, Set, Go!
- Wildfire Safety Tips - Wildfire Won't Wait!
- San Francisco Fire Hazard Severity Zones Map - 2024
- San Francisco Fire Hazard Severity Zones FAQ (English) - 2024
- San Francisco Fire Hazard Severity Zones FAQ (Spanish) - 2024
- California Fire Hazard Severity Zones Video - 2024
- California Fire Hazard Severity Zones Map - 2024