USA – At the time, Josh Stanbro figured it was just bad luck when his childhood home and apple orchard burned down in 1992, a casualty of the infamous Fountain Fire that destroyed 300 houses and displaced several thousand people.
But looking back at it, Honolulu’s chief resilience officer sees the climate signal in the blaze that ultimately scorched 64,000 acres in northern California. It was part of an escalation of fires there over the years — and that’s what he’s seeing in Hawaii now.
People often picture the western United States when they think of wildfires. But as a percent of total land area, Hawaii’s wildfires burn as much or more land each year than any state, studies show.
“But the hurricane stuff, the heat stuff and the fire stuff is what I think will really impact Hawaii before sea level rise gets a chance.”
That impact extends far beyond burnt farmland, lost buildings, injuries and the occasional death.
University of Hawaii professor Camilo Mora recently reviewed 12,000 scientific studies and found at least 30 different types of impacts of climate change related to fires, hitting health, food, water, infrastructure, security and the economy.
Wildfires affect mental health and spread disease, degrade air quality and harm coral reefs, threaten freshwater supplies and deter tourists, the studies showed.
University of Hawaii wildland fire researcher Clay Trauernicht has found that the area burned annually by wildfires in Hawaii has increased fourfold in recent decades.
But it’s not just a product of climate change, though that’s making the situation much worse.
Forecasts of wetter and stormier winters coupled with drier and hotter summers will only heighten the threat of wildfires in the islands, he said.
But changing economics have also led to more destructive wildfires, beginning in the 1960s when tourism started driving the state instead of large-scale farming and ranching. Hawaii has abandoned tens of thousands of acres of agricultural land as sugar and pineapple plantations steadily folded.
Much of that land has laid fallow for years, invaded by African grasses and shrubs. Guinea grass can grow six inches a day, creating an enormous amount of self-replenishing fuel while replacing native vegetation.
“What it does is make us way more vulnerable for the changes that are going to come with climate change,” Trauernicht said.
Stronger El Niños are expected to bring wetter winters. That means rapid growth of grasses and shrubs in all the fields that are no longer in production. So it may look especially lush and green during those months, he said, but that should be a sign to get ready for a potentially dangerous summer when dry conditions arrive.
This isn’t some far-off climate threat. It’s now.
The mean annual area burned in Hawaii from 2005 to 2011 accounted for 0.48 % of Hawaii’s total land area, which was greater than the proportion of land area burned across the entire U.S. mainland (0.30%), and even across the 12 states in the fire-prone western U.S. (0.46 %) over this same time period, Trauernicht wrote in his 2015 study.
Even for two of the worst fire years on record for the continental U.S. in terms of area burned, Hawaii had a larger percentage of its land area burned, his study says.
In March, Hawaii became free of drought statewide for the first time since 2015. But a dry spring and record-high temperatures this summer quickly reversed that, especially on the leeward sides of the islands that are already typically much drier than the windward sides.
It was the perfect setup for the wildfires that burned nearly 10,000 acres last month on Maui. Thousands had to evacuate towns on the west coast, two major roads were closed and flights were diverted due to smoke.
Firefighters were battling another brushfire Friday just outside Paia. While helicopters dumped water from overhead, backhoes worked to dig trenches to create fire breaks and tanker trucks spread water on flames that crept close enough to the Hana Highway that people on the other side could feel the heat.
Much of that fuel came from non-native grasses and shrubs that have taken over the lands that the Hawaiian Commercial & Sugar Co. had in production until it shut down in 2016. It was one of the last sugar and pineapple companies still in operation in Hawaii.
“The risk of fires is not going to go down,” Trauernicht said. “It’s only going to increase.”
Managing Wildfires Is Becoming A Problem
Other effects of climate change compound the problem.
Sea surface temperatures are warmer than normal around the Hawaiian Islands and are expected to be so through November, creating warmer air temperatures in the region. That means more tropical storms could reach the state, especially in the southeast, according to the National Interagency Fire Center.
That extra rain grows more fuel for wildfires. And with dry conditions in between storms, the center expects an above-normal risk of significant fires in the eastern half of the Hawaiian Islands through November.
Hawaii used to have seasons for wildfires, said Michael Walker, the fire lead in the state Division of Forestry and Wildlife. The division is responsible for 1 million acres of forested watersheds, about 25% of the total land in Hawaii, and partners with the counties and federal agencies to cover another 30%.
July and August are often still the worst months, but Walker said in the past few years he has seen a year-round fire season.
In January and February, Walker said crews woke up to frost on the trees while fighting fires up on Mauna Kea on Hawaii island and they dealt with whipping winds battling a blaze on Maui that forced a few dozen visitors and residents into emergency shelters.
Winds from tropical storms passing through the Pacific literally fan the flames, a “climate change double-whammy,” as Stanbro put it.
“Our real problem is a fuels problem,” Walker said. “We have all this open grassland that we’re not managing. And if we don’t manage them, these fires are going to continue.”
The Department of Land and Natural Resources requested an extra $300,000 to fight wildfires in each of the next two years, which the Legislature approved in April. The money goes toward paying overtime and contracting with companies to provide heavy equipment and helicopters, which cost about $1,100 per hour. For example, there were three choppers fighting Friday’s brushfire on Maui.
DLNR Chair Suzanne Case, who requested the funds from lawmakers in January, specifically cited climate change as a reason more money was needed to fight wildfires.
The Human Factor
Humans are almost entirely to blame for wildfires in Hawaii, starting many of the fires. But unlike some global warming challenges, experts said this one is solvable at the local level.
Lightning rarely sparks a blaze in the islands, and usually just on the Big Island. But arson and unintentionally set fires are rampant, particularly on the west side of Oahu.
There are about 35 ignitions, as fire researchers call it, per square mile each year in Waianae. Elsewhere on Oahu and on the neighbor islands, there are between two and nine ignitions per square mile annually, which is still higher than the national average, Trauernicht said.
Eric Enos, who heads Ka’ala Farm, a community nonprofit that has served the Leeward Coast since 1976, has been working on solutions.
He received state funding to develop a plan after applying in January for a $1 million grant from the Legislature for the Waianae Kai Wildfire Prevention and Mitigation Project.
In his application, Enos recounted his experience last August with a brush fire in the area that ultimately burned 9,000 acres.
Two school buses of families were at the farm for a daylong experience with kalo, growing and cooking the Native Hawaiian staple and connecting to ancestral wisdom. Then three fires were set mid-day.
“We were trapped for hours like an apocalypse,” Enos said.
The wind was fierce and blowing downhill but the fire still jumped the road and headed toward them. They had a bucket brigade and shovels fighting the fire as families huddled with children.
He recalled wondering where they’d go if the wind shifted. Fire trucks took seemingly forever to respond as companion fires were started in adjoining valleys.
“The entire town of Waianae was black with smoke as the junkyard of acres of cars exploded like a bomb,” Enos said.
It was difficult to breathe and people were evacuated, including his own family in Makaha.
“The roads were filled with miles of cars unable to move,” Enos said. “Waianae town was visibility zero.”
His plan, which is still being developed, is multifaceted. The goal is to increase security in the upper valley, implement best management practices to prevent fires and increase water availability for firefighting.
It could involve installing a gate in the back of Waianae Valley, similar to the one at Kaena Point, that would limit access to where many of the fires are started.
“There’s a large population of pretty dysfunctional people — not well — that frequent the area,” he said.
In March, Micah Araneta was arrested after a few fires were started in Waianae. Police tased him along the side of the road after a standoff that Sen. Maile Shimabukuro filmed while riding the bus home from the Capitol. He was holding what appeared to be a blowtorch.
‘This Is Nuts’
Enos also wants to educate the community, beginning at a young age, about the importance of protecting native forests.
“Your forest is a sacred place even though it’s dry,” he said. “People who start fires have no connection. They’re totally cut off from those values. They weren’t exposed.”
Enos has seen an improvement over the past 15 years in the community’s overall awareness of this longstanding problem. He attributes the turnaround to increased involvement of community nonprofits stepping up, noting groups like Hoa Aina o Makaha and Malama Learning Center.
“The impact they have is tremendous,” he said, adding that it’s unfortunate these and other nonprofits struggle financially to fulfill their missions.
Enos feels the urgency of reducing the number of fires that get started and increasing the ability to put them out faster before they burn even larger swaths of land and threaten lives.
“The risk of destructive wildland fires will only increase as climate change continues to create drier conditions for the Waianae Moku,” he told lawmakers.
Waianae native William Aila, the director of the Department of Hawaiian Home Lands, wants to see more funding put toward preventing these fires from spreading up into the forests. He envisions a longer term solution involving the planting of “edible fire breaks” — growing large breadfruit or mango trees that shade out the invasive grasses.
“We can kill two birds with one stone,” he said, noting the state’s goal to double its local food production by 2020.
Aila also wants the secondary impacts of wildfires to be included in the “cost” that authorities calculate.
He said it’s critical to add the cost of debris that ends up in the ocean along with all the soil that’s no longer held by the plants that were there. It smothers the coral reefs, which threatens fisheries as well as the state’s tourism-dependent economy.
Stanbro recalled firefighters telling him in California how some of the fires are now so hot they create their own weather.
“This is nuts,” he said. “We have crossed a threshold.”