![]() For more detail, please see Cal Fire’s official county maps for both state and local responsibility areas. Note: KQED has simplified these maps for online display. After that, Cal Fire will work with local governments to develop new maps for those areas, too. The Caldor Fire has spread to 177,260 acres over 16 days, is 15 contained and has destroyed 482 structures. Despite the quiet year as measured i n acreage, a number of significant wildfires burned in California. See air quality information in real time with The Chronicle’s air quality map. The agency expects to release official maps next summer for “state responsibility areas” - the parts of California areas that it’s responsible for protecting. While the number of fires in 2022 was only slightly below the 5-year average, the total acreage burned was well below the 5-year average less than 400,000 acres burned in 2022 versus the 5-year average of 2,300,000+ acres. “You don’t want to zone that house based on what’s there, but what could potentially be there,” Sapsis says.Ĭal Fire hopes to start testing its new draft maps this winter. In urban areas, fires can move quickly through dense neighborhoods where homes are tightly spaced. The new maps are meant to show “where fires could go,” not where they could start, Sapsis says.įor instance, development patterns can change how fire spreads. But the risk, or how much damage a fire can do, depends on the built environment. Video Above: LiveCopter 3 over the Caldor Fire on Aug. Those kinds of weather conditions are tricky to map, Sapsis says, because you want to take into account those very destructive types of fires, but also need to consider a longer, 50-year period.įire “hazard” is a measure of how a fire will behave, based on the physical conditions. California is having another record-setting wildfire season in 2021 as the state faces continued drought conditions. “We’re just now getting the capacity to estimate at a realistic scale what these areas, footprints, if you will, of these dry windy events are … and what the magnitudes of these events are,” Sapsis says. Sapsis says that fire modeling technology is improving all the time, and that the new models Cal Fire is testing are taking into account dry, windy weather. Original 2019 story continues below New Maps to Assess Weather and Development (Cal Fire was expected to release new draft maps to test in winter 2019/2020 that took new risk factors into account. We do the best we can based on the tools we have,” he says.Īnd, as recent fires have tragically demonstrated, living outside a higher-risk zone doesn’t mean that you’re safe.Įxtreme winds drove much of the damage in Paradise during last the November 2018 Camp Fire and in the North Bay during the October 2017 fire siege, and current fire maps don’t take that factor into account. “Estimating a burn probability is an estimate. Sapsis says it’s important to remember that the Cal Fire-defined risk zones are showing only a probability. “How likely is the fire? And what is the nature of the fire?” “The model is basically trying to describe areas and their likelihood for a structure to ignite,” Dave Sapsis, a Cal Fire researcher who specializes in mapping and research models, told KQED in 2019.
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