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As climate change warms the planet, wildfires have become so unpredictable and extreme that new words were invented: firenado, gigafire, fire siege — even fire pandemic. California has 78
more annual “fire days” — when conditions are ripe for fires to spark — than 50 years ago. When is California’s wildfire season? With recurring droughts, It is now year-round. Nothing is as
it was. Where are the worst California wildfires? All over. Whatever NIMBYism that gave comfort to some Californians — never having a fire in their community before — no longer applies to
most areas. Los Angeles County is the latest victim. At least 24 people have died in the Palisades Fire along the coast in Los Angeles and the Eaton Fire in the foothills of the San Gabriel
Mountains. All of Southern California is experiencing drought conditions, with close to zero rainfall since May, and severe Santa Ana winds. Southern California’s coastal fires typically
have to be driven by desert winds. But no longer. Vegetation along the usually moist coast is often so parched that it doesn’t need winds to fan wildfires. Also, in the far north,
California’s so-called “asbestos forests” have lost their immunity. Massive fires tore through dense, moist rainforests where climate change chased away the region’s protective layer of fog
and mist. What causes California’s wildfires? Arson and power lines are the major triggers. A 2022 audit showed that utilities aren’t doing enough to prevent fires. But lightning-sparked
fires, like the one that burned Big Basin park, are a fairly recent trend. Unpredictable and hugely powerful lightning storms — tens of thousands of strikes in a span of days — bombard
vulnerable landscapes. Scientists say to expect more lightning as the planet warms. And, aided and abetted by drought, more than 163 million trees have been killed by drought or insects. The
job of battling these larger, more stubborn California wildfires has become more costly, complicated, fearsome and deadly, straining the state’s already overworked firefighters. Insurers
keep raising premiums and canceling policies, even if homes have been fire-hardened. California’s landscape evolved with fire. What remains is for its inhabitants to adapt to the new
reality. And that requires yet another new term: Welcome to the “Pyrocene,” coined by fire scientist Stephen J.Pyne. The age of fire. Wildfires took scores of lives in California in 2018,
the deadliest fire year in the state’s recent history. Most of those deaths were related to the blaze that destroyed the Northern California town of Paradise. The numbers include people
responding to the fires. Since 2017 and 2018, deaths have declined. California’s bigger, more frequent fires are endangering more residents. Forest fires are increasingly a misnomer as
flames race across landscapes dotted with subdivisions and communities that have been carved out where trees once stood. The trend of more Californians living in harm’s way complicates
firefighting efforts — and ramps up the danger fires pose. California’s forests, which cover a third of the state, are now choked with nearly 163 million dead trees. Weakened by a prolonged
drought, which scientists link to climate change, California’s ubiquitous pines and oaks are vulnerable to insect infestation and disease. Those giants crash to the forest floor and, unless
they are removed, provide ready fodder for the next voracious fire. The die-off is catastrophic, beyond the reach of state foresters to remedy. In many communities of the central and
southern Sierra Nevada mountain range, “80% of trees are dead,” said Ken Pimlott, former director of Cal Fire. The state owns only about 3% of California’s wooded acreage. Some land is owned
by cities, counties, Native American tribes and private holders. President-elect Trump has long criticized California’s fire management: But in fact, the biggest forest landlord in
California, by far, is the federal government, which manages 18 national forests in the state. The U.S. Forest Service has a longtime policy of putting out every fire, and quickly, which has
packed the federal land with fuel to burn. And its budget falls short of the cost of needed work to reduce that fuel. If a burned-out forest is replaced by chaparral or brush, that
landscape loses more than 90 percent of its capacity to take in and store carbon. A warming climate complicates everything. Hotter and drier seasons mean that big fires in December, once
almost unheard of, are now common. In earlier decades, fires late in the year might have sputtered out after hitting hillsides wet with winter rain. More recent blazes feasted on vegetation
that has been sucked of moisture by persistent drought. Even years of plentiful rain harbor dangers. Post-fire precipitation, especially very wet winters, can usher in the growth of
non-native shrubs and grasses that burn quickly and spread fires faster than native species. No state has done as much as California to reduce its output of planet-warming greenhouse gases.
Yet the smoke produced by major fires is so potent that a single weeks-long blaze can undo a year’s worth of carbon-reduction efforts. State officials are concerned that what’s pumped into
the air during fires could impair California’s ability to reach its stringent greenhouse-gas reduction goals. A single wildfire can spew more pollutants into the air than millions of cars.
Moreover, as more trees die, another weapon to combat climate change is lost: the prodigious ability of healthy trees to absorb carbon from the atmosphere. That process is reversed if the
trees burn. When fires burn in uninhabited wildlands, their corrosive effects can be carried hundreds of miles by the wind, causing stinging eyes, burning throats and severe coughing.
Particles in smoke can trigger asthma attacks and heart attacks. Smoke also contains cancer-causing substances and gases. Local air districts issue warnings to residents to wear masks and
avoid outside exercise. Hospital emergency rooms report increased numbers of patients seeking help for respiratory problems, and school closures can keep as many as a million children home
as even indoor air quality deteriorates. Trees release a powerful pollutant, black carbon, as they burn. Black carbon is many thousand times more damaging than greenhouse gases. And the
damage doesn’t cease once flames are snuffed out; decaying forests continue to emit harmful pollutants. If a burned-out forest is replaced by chaparral or brush, that landscape loses more
than 90% of its capacity to take in and retain carbon. When fires rage in California’s mountains, the systems that store and clean water, feed streams and rivers, support fish and other
wildlife and literally hold the hillsides together burns up. Forests are watersheds, a critical component of California’s water supply. * Trees hold water in their limbs, roots and soil and
draw it into underground aquifers, a source of drinking water. * Meadows on lower slopes filter and clean water. * Tree loss after fires fosters soil erosion; the runoff clogs waterways. *
Unstable hills can threaten public safety with landslides and mudslides. California’s wildfire season is essentially year-round now. And with wildfires expected to get worse, residents,
utilities and the state play a role in minimizing the impact of the wildfire seasons. RESIDENTS Residents have a responsibility to create a defensible space around their property and
“harden” homes to make them fire resistant. California law requires creating a buffer by clearing out trees, brush and grass within 100 feet around homes in wildfire-affected areas. Fire
officials say it can increase the likelihood of a house surviving a wildfire eight-fold. In addition, homes with wood or shingle roofs are at high risk of being destroyed. Consider materials
such as composition, metal or tile. [embedded content] UTILITIES Investor-owned utilities must prepare wildfire mitigation plans that describe what they are doing to prevent, combat and
respond to wildfires. The three largest utilities, Pacific Gas & Electric, Southern California Edison, San Diego Gas & Electric, all plan to spend billions clearing brush and trees
away from transmission lines, insulate or underground power lines, install or maintain a network of remote cameras and weather stations to detect wind, smoke and other dangers. But a state
audit found that some of the wildfire plans were “seriously deficient” and concluded that state officials are failing to hold California’s electric utilities accountable for preventing fires
caused by their equipment. The report to the California Legislature found that the new Office of Energy Infrastructure Safety approved utility companies’ wildfire prevention plans even when
they were “seriously deficient.” PG&E and SCE are now following in the footsteps of SDG&E in expanding the use of public safety power shutoffs, also known as de-energization. The
practice of shutting off electric power during dangerous weather conditions is viewed as a public-safety measure of last resort because it can cut off internet access and make communication
difficult for hospitals, firefighters and emergency personnel. [embedded content] THE STATE On March 22, 2019, Gov. Newsom declared a wildfire state of emergency for California and waived
environmental regulations to speed up forest management projects aimed at reducing the fuel load for the upcoming wildfire season. By removing dead trees or clearing brush, the programs aim
to reduce the threat of wildfires by creating fuel breaks, defensible space and safe travel corridors around vulnerable communities. Some environmental groups, however, question whether
logging would damage ecosystems and suggest it’s more effective to clear vegetation around homes. It has to be said that fires are not always bad. Naturally occurring fires clear overgrown
forests, creating space for some plants and trees to revitalize. Researchers say less-dense forests are more natural and healthy. But more often in California, wildfires ignite a furious
competition for life. Fast-growing and opportunistic non-native plants rush in after fires, with the potential to wholly supplant native species. This phenomenon doesn’t just erase an aspect
of California’s botanical history; it affects its fire future. Invasive grasses and weeds often burn more readily, fanning hotter and more frequent fires. Not surprisingly, the wildfire tab
is growing. The state routinely exceeds projected fire suppression costs. In 2018, California spent nearly $1 billion on fire suppression and emergency response, surpassing the budgeted
$450 million. Put another way: CalFire’s total funding for fire protection, resource management and fire prevention has grown from $800 million in 2005-06 to an estimated $3.7 billion in
2021-22. In years of exceptional fire activity, the cost to suppress them can drain California’s emergency fund: In 2020 an estimated $1.76 billion was pulled from the contingency coffers.
Advanced firefighting tools that the state relies on don’t come cheap. Cal Fire boasts one of the largest, if not _the_ largest, firefighting air fleets in the world, including S-2T air
tankers and Huey helicopters. The state has started upgrading the Hueys to specially retrofitted Black Hawk firefighting helicopters and will add C-130 Hercules cargo planes. And rather
than waiting to respond to a wildfire, emergency personnel have shifted to pre-positioning strike teams before a fire even starts. It’s a strategy that costs more. Insurance in fire-prone
areas is expensive. California homeowners insurance rates increased by more than 43% between 2018 and 2023, according to an analysis by S&P Global. Some major insurers have stopped
writing policies in California, citing fire risk along with inflation. The FAIR Plan, the state-mandated insurer of last resort for those who can’t find other coverage, added 212,960 new
policies for homes and businesses in the fiscal year ending September 2024, more than double the number from the year before. FAIR Plan policies are concentrated in fire-prone counties,
accounting for more than a quarter of new policies in the 10 counties with highest fire risk, according to the most recent Department of Insurance data. Higher prices have influenced
purchasing patterns, researchers with the RAND Corp. have found: Policyholders are buying less coverage, low-balling the cost to fully replace their belongings and electing higher
deductibles. Look up your ZIP code using our interactive map. Hundreds of thousands of miles of transmission lines and other electrical equipment are strung across California, drawing little
attention—until authorities name utility equipment as the cause of a wildfire. One in 10 California wildfires is related to energy equipment, according to the state’s chief utility
regulator. Lawmakers have ordered that utility companies put safety measures in place, hoping to ensure that their equipment won’t spark future fires. Among the firms’ strategies: more
aggressively clearing brush and trees around transmission lines; swapping wooden power poles for metal ones; maintaining a network of remote cameras to keep watch on wind, smoke and other
dangers; and preemptively shutting down the power when conditions are windy and dry. None of these or other fire-mitigation efforts will come cheaply. Early estimates place the cumulative
economic cost of Pacific Gas & Electric’s huge 2019 blackout in Northern California at up to $2.5 billion. When a judge proposed sweeping new safety measures for PG&E, the company
said the work could cost an eye-popping $150 billion. And consumers can be expected to foot much of the fire-mitigation bill as utility companies pass costs along to them. Even when fires
threaten homes and no help is in sight, all is not lost. There is much homeowners can do to prepare and protect their property in the face of wildfire, beginning with clearing trees, brush
and wood piles around their houses,. The manner of construction and the types of materials used can help give structures a fighting chance against the advance of flames. California building
codes for new homes require forgoing wooden roofs and decks in favor of fire-resistant materials, among other things. Among the actions homeowners can take to protect their property: *
Install double-paned windows. * Detach garages and storage sheds from the main house. * Put ember-resistant vents in attics and elsewhere. * Consider fire-resistant cladding such as stucco
or stone. There are, however, some places where the risk is so great that fire scientists say homes simply should not be built there—even in a state where housing shortages have reached
crisis levels. In California from 1990 to 2010, an estimated 45% of new housing units were constructed in the “wildland-urban interface”—where suburbia and rural towns back up onto wild, and
combustible, landscapes. With more residences sprouting on the edge of wildlands or deep in narrow canyons, fires become an inevitability and firefighters have a tougher and larger
territory to defend. What to do? State lawmakers have already extended some state restrictions to local lands, and some have talked about pospossible rebates or other subsidies for residents
who cannot afford to “harden” their homes. But essentially legislators are grappling with an unpalatable reality: Require even more extensive and expensive upgrades to existing homes, or
ban building altogether in some areas. That discussion is as potentially explosive as the fires themselves. _— CalMatters housing reporter Felicia Mello contributed to this explainer_