Canada’s wildfire problem comes down to a combination of overwhelming scale, a changing climate, decades of fire suppression backfiring, and an aging fleet of firefighting aircraft that can’t keep pace. No single factor explains it. These forces compound each other, and in recent years they’ve produced fire seasons that exceed any country’s capacity to fight.
The Sheer Size of Canada’s Fire-Prone Forests
Canada’s boreal forest, the vast band of spruce, pine, and fir stretching from Alaska’s border to the Atlantic coast, covers 307 million hectares. That’s 75% of all Canada’s forests and woodlands, and it represents one of the largest intact forest ecosystems on Earth. Much of it is remote, accessible only by air or seasonal roads. When lightning strikes in northern British Columbia, Saskatchewan, or Ontario’s far north, there may be no road, no fire station, and no water source within hundreds of kilometers.
This isn’t like fighting a wildfire in California, where crews can drive engines to the fire’s edge and helicopters can refill from nearby reservoirs. In Canada’s backcountry, getting firefighters to the scene often means flying them in by helicopter, setting up temporary camps, and hauling supplies by air. That takes time, money, and aircraft that are already stretched thin. When dozens of fires ignite simultaneously across multiple provinces, the logistics become impossible to manage at the speed fire moves.
Climate Change Is Creating a Feedback Loop
Hotter, drier summers are lengthening Canada’s fire season and making fires harder to stop once they start. But the climate connection goes beyond just heat and drought. Research tracking cloud-to-ground lightning across Canada and the northern United States from 1999 to 2023 has found sizeable areas where lightning strikes are trending upward, particularly in wildfire-prone regions. Lightning is the primary ignition source for remote fires, and a separate analysis of Canadian fire data over 57 years found that the number of large fires (over 200 hectares) and total area burned have both increased significantly, likely driven by more lightning-caused ignitions.
There’s also a troubling feedback mechanism at work. Wildfire smoke gets pulled into thunderstorm clouds, and evidence suggests this smoke increases the production of a particular type of lightning strike. In other words, big fires produce smoke that fuels more lightning, which starts more fires. Researchers have identified this pattern especially near the British Columbia, Alberta, and Northwest Territories border region, where large wildfires have clustered in recent years, and the zone of increasing lightning extends far east into Saskatchewan, Manitoba, and northern Ontario.
Decades of Fire Suppression Made Things Worse
For most of the 20th century, Canada’s approach to wildfire was straightforward: put every fire out as fast as possible. That strategy protected communities and timber in the short term, but it created a long-term problem that fire scientists call the “fire suppression paradox.” Every fire you extinguish leaves behind fuel, dead wood, dense undergrowth, and tightly packed trees, that would have been cleared naturally. Over decades, this unburned material accumulates, and when a fire finally does break through suppression efforts, it burns with far greater intensity.
A 2024 study published in Nature Communications described the dynamic bluntly: by putting out a fire today, we make fires harder to put out in the future. The researchers compared it to the overprescription of antibiotics. In trying to eliminate all fires, agencies have succeeded only at eliminating the less intense ones, the manageable fires that would have reduced fuel loads naturally. What remains are the most extreme events, burning through landscapes overloaded with fuel that suppression allowed to build up. These “suppression-resistant” fires are exactly the kind that overwhelmed Canadian crews in 2023, when more than 15 million hectares burned, double the previous national record of 7.5 million hectares set in 1989.
Many Fires Are Intentionally Left to Burn
Not every wildfire in Canada gets a full firefighting response, and that surprises people who assume every blaze triggers a scramble of water bombers and ground crews. In reality, provincial fire agencies like British Columbia’s Wildfire Service use a tiered system. When a fire threatens public safety, property, or infrastructure, it gets a full response: immediate suppression with everything available. But when a fire is burning in remote wilderness with no immediate threat to people or structures, it may receive what’s called a “modified response,” a combination of monitoring and selective intervention designed to minimize damage while letting the fire play its natural ecological role.
This isn’t negligence. Fire is a natural and necessary part of Canada’s boreal ecosystem. Many tree species depend on fire to reproduce, and periodic burning keeps fuel loads in check. The challenge is that when the public sees satellite images of massive fires burning across northern Canada, they assume nobody is doing anything. In many cases, those fires are being monitored but not actively fought because the cost and risk of sending crews into remote wilderness outweigh the benefit, especially when resources are needed to protect communities elsewhere.
An Aging Fleet With No Replacements in Sight
Canada’s aerial firefighting fleet is old, shrinking, and not being replaced fast enough. A CBC News tally found roughly 106 water bombers considered “dispatch-ready” across the country. But aviation analyst John Gradek, who reviewed the data, estimated only about 60 of those qualify as high-volume, high-performance fire-attack planes.
The backbone of Canada’s aerial fleet has long been the Canadair CL-215 and its updated version, the CL-415. These amphibious scooper planes, which skim lakes and rivers to fill their tanks, are used by half the country’s provincial fleets. But they haven’t been manufactured since 2015. Quebec still flies three CL-215s that were built 53 years ago. Manitoba operates three that average around 40 years old. While these planes can keep flying with proper maintenance, supply chain problems sometimes ground them while they wait for replacement parts.
A successor aircraft, the DHC-515, is in development, but the first 24 have been ordered by European countries including France, Greece, Spain, Italy, and Croatia. The manufacturer says the earliest any would be available for Canadian customers is around 2029 or 2030. As of the latest reporting, no Canadian province or territory has placed an order. That means for the rest of this decade, Canada will be fighting increasingly severe fire seasons with planes built in the 1970s and 1980s.
International Help Has Limits
Canada doesn’t fight wildfires entirely alone. The United States and Canada exchange firefighting personnel and aircraft virtually every year through longstanding international agreements. Several northern U.S. states also have direct compacts with Canadian provinces for sharing resources. Australia and New Zealand participate in similar arrangements, though deployments across hemispheres are less frequent.
But international assistance has practical limits. When Canada’s fire season peaks, the western United States is often burning too. Australia and New Zealand can only help during their off-season (the Southern Hemisphere’s winter). And flying in crews from overseas takes days, not hours. In a fire season like 2023, when fires were burning simultaneously from British Columbia to Nova Scotia, the demand for firefighters, aircraft, and equipment exceeded what any mutual aid agreement could fill. The fundamental math is simple: Canada has more burnable forest than any firefighting system on Earth could fully protect, and climate change is widening that gap every year.