Table of Contents
Wildfires represent one of the most powerful and destructive natural forces on our planet, affecting millions of hectares of land annually and posing significant threats to ecosystems, communities, and human lives. Understanding where wildfires are most likely to occur and the physical characteristics that make certain regions particularly vulnerable is essential for effective preparedness, management, and mitigation strategies. Between March 2024 and February 2025, fires scorched about 3.7 million square kilometres worldwide, demonstrating the global scale of this challenge.
The relationship between wildfires and their environment is complex, involving intricate interactions between climate patterns, vegetation types, topography, and increasingly, human-induced climate change. Research shows that changes in climate create warmer, drier conditions, leading to longer and more active fire seasons. As our planet continues to warm, understanding these wildfire-prone regions and their defining characteristics becomes increasingly critical for protecting both natural resources and human communities.
The Global Wildfire Landscape: Understanding the Scale
Wildfires are a global phenomenon that affects every inhabited continent, though their frequency, intensity, and impacts vary dramatically by region. The global analysis highlights that the fire season was marked by a paradox: less land burned, but more carbon was released than in most years on record, with fires emitting over 8 billion tonnes of carbon dioxide into the atmosphere, around ten percent above the average since 2003.
The distribution of wildfire activity across the globe is far from uniform. Africa tends to be the region with the largest share of area burned — typically ranging from 6% to 8% each year. However, when considering the intensity and destructiveness of fires, other regions present equally concerning patterns. New data shows that forest fires are getting worse, burning more than twice as much tree cover today as they did 20 years ago, largely due to climate change.
Recent years have witnessed unprecedented wildfire events across multiple continents. 100 million people and US $215 billion worth of homes and infrastructure were exposed to wildfire, with emissions from fires reaching over eight billion tonnes of CO2 – around 10% above the average since 2003. These statistics underscore the growing threat that wildfires pose not only to natural ecosystems but also to human populations and economic infrastructure.
Physical Features That Increase Wildfire Susceptibility
The physical characteristics of a landscape play a fundamental role in determining its vulnerability to wildfires. These features interact in complex ways to create conditions that either promote or inhibit fire ignition and spread. Understanding these physical factors is crucial for assessing wildfire risk and implementing effective management strategies.
Climate and Weather Patterns
Climate serves as one of the most critical determinants of wildfire risk. Wildfire risk depends on multiple factors, including temperature, soil moisture, and the presence of trees, shrubs, and other potential fuels, all of which are closely linked to climate variability and climate change. Regions characterized by Mediterranean climates, with hot, dry summers and mild, wet winters, are particularly susceptible to wildfire activity.
Changes in climate create warmer, drier conditions, leading to longer and more active fire seasons, with increases in temperatures and the thirst of the atmosphere due to human-caused climate change having increased aridity of forest fuels during the fire season. This atmospheric demand for moisture, known as vapor pressure deficit, has become a critical factor in modern wildfire behavior.
Temperature plays a multifaceted role in wildfire dynamics. Temperature of fuels is determined by the ambient temperature because fuels attain their heat by absorbing surrounding solar radiation, and the temperature of a fuel influences its susceptibility to ignition, with fuels igniting more readily at high temperatures than at low temperatures. Extended heat waves and drought conditions create ideal circumstances for fire ignition and rapid spread.
Humidity levels significantly affect fuel moisture content. Humidity, the amount of water vapor in the air, affects the moisture level of a fuel, and at low humidity levels, fuels become dry and, therefore, catch fire more easily and burn more quickly than when humidity levels are high. Regions experiencing prolonged periods of low humidity face elevated wildfire risk, particularly when combined with high temperatures and strong winds.
Topography and Terrain
The shape and configuration of the land surface exert profound influences on wildfire behavior. Topography describes land shape and can include descriptions of elevation, slope, aspect, and features such as canyons, valleys, and rivers, with these topographical features able to help or hinder the spread of fire.
Slope steepness represents one of the most critical topographic factors affecting fire spread. Fire typically burns more quickly and intensely up steep slopes. This phenomenon occurs because flames and heat rise naturally, preheating fuels upslope and creating conditions for rapid fire advancement. Fires burning uphill can travel at rates many times faster than fires on flat terrain, making steep slopes particularly hazardous.
Intensity is largely a condition of the physical landscape (topography) and vegetative fuel available to burn, with a crown fire on a forested hillside producing a greater wildfire intensity than grasses on flat ground. This relationship between topography and fire intensity has significant implications for fire management and suppression efforts.
Aspect, or the direction a slope faces, also influences wildfire susceptibility. Elevation and aspect can determine how hot and dry a given area will be, with higher elevations being drier but colder than low ones, and a north-facing slope being slower to heat up or dry out. In the Northern Hemisphere, south-facing slopes receive more direct sunlight, leading to warmer temperatures, lower moisture levels, and consequently higher fire risk.
The speed, direction, and coverage of a wildfire is dependent on the physical features in the area, such as mountains, valleys, and river beds, with terrain features also modulating surface wind patterns and guiding fires through a landscape. Canyons and valleys can act as natural chimneys, channeling winds and accelerating fire spread, while also creating dangerous conditions for firefighters.
Vegetation and Fuel Characteristics
The type, density, and condition of vegetation in an area fundamentally determine its capacity to support wildfire. Fuels are all living and dead plant material that can be ignited by a fire. Different vegetation types burn with varying intensities and at different rates, creating distinct fire regimes across different ecosystems.
Dense vegetation provides abundant fuel for fires, while the specific characteristics of plant species influence fire behavior. Some plants contain oils and resins that make them highly flammable, while others have evolved fire-resistant properties. Under extreme conditions, fires burn to the top of trees and tall brush, creating crown fires that are among the most dangerous and difficult to control.
The moisture content of vegetation plays a crucial role in fire susceptibility. The dryness of vegetation played a critical role during the extreme wildfires in Amazonia and the Congo Basin, where abnormally dry forests and wetlands allowed fires to spread faster and further. Drought conditions can transform normally fire-resistant ecosystems into highly flammable landscapes.
Burning embers, known as firebrands, spread fire ahead of the flame front and can ignite buildings up to a mile away from the main fire. This spotting behavior is particularly pronounced in vegetation types that produce abundant embers, such as eucalyptus forests and certain coniferous species.
Wind Patterns and Fire Weather
Wind represents one of the most dynamic and influential factors in wildfire behavior. Weather conditions such as wind, temperature, and humidity contribute to fire behavior, with wind being one of the most important factors because it can bring a fresh supply of oxygen to the fire and push the fire toward a new fuel source.
Fire moves faster and is more intense under hot, dry, and windy conditions. Strong winds can transform a manageable fire into an uncontrollable conflagration within minutes, carrying embers across firebreaks and igniting spot fires far ahead of the main fire front. Regional wind patterns, such as California’s Santa Ana winds or Australia’s hot northerly winds, create particularly dangerous fire weather conditions.
In all four regions studied, exceptionally fire-prone weather was the primary driver of extreme outcomes, with vegetation fuel conditions set by prior seasons playing a crucial role. This finding emphasizes that while fuel conditions set the stage for potential fires, weather conditions often determine when and how severely fires will burn.
North America: A Continent of Contrasts
North America experiences diverse wildfire regimes across its vast geography, from the boreal forests of Canada to the chaparral ecosystems of California and the pine forests of the southeastern United States. Recent years have seen dramatic increases in wildfire activity across the continent.
Western United States and California
The western United States, particularly California, has become synonymous with catastrophic wildfires in recent decades. Over the past 20 years, the amount of land area burned each year has increased as wildfires have grown larger, while the number of fires each year has remained fairly constant. This trend indicates that fires are becoming more severe rather than simply more frequent.
California’s Mediterranean climate creates ideal conditions for wildfires. California’s seasonally dry Mediterranean climate lends itself to wildfires. The state experiences hot, dry summers with little to no rainfall, followed by wet winters that promote vegetation growth. This cycle creates abundant fuel that dries out during the summer months, setting the stage for intense fire seasons.
The January 2025 Los Angeles fires demonstrated the devastating potential of California wildfires. A major wildfire outbreak struck the Los Angeles region of California, triggered by the convergence of exceptionally dry vegetation and powerful Santa Ana winds, with the sequence of events driven by a “hydro-climate whiplash” – after a wetter than usual spring/summer in 2023-24 the region entered an exceptionally dry autumn and early winter, resulting in abundant highly flammable vegetation.
The wildfires in Los Angeles in January 2025 caused 30 deaths, forced 150,000 evacuations, destroyed at least 11,500 homes and resulted in economic losses totalling $140 billion. This catastrophic event illustrates how the combination of climate conditions, vegetation growth patterns, and extreme weather can create perfect storm scenarios for wildfire disasters.
The western United States faces multiple physical factors that contribute to wildfire risk. The region’s mountainous terrain creates complex fire behavior patterns, with steep slopes accelerating fire spread and canyons channeling winds. The largest increase in extreme fire behavior was in the temperate conifer forests of the Western U.S. and the boreal forests of northern North America and Russia.
These drivers were found to be responsible for over half the observed decrease in the moisture content of fuels in western U.S. forests from 1979 to 2015, and the doubling of forest fire burned area over the period 1984–2015. Climate change has fundamentally altered the fire regime in the western United States, creating conditions that support larger, more intense fires.
Canadian Boreal Forests
Canada’s vast boreal forests represent one of the world’s most important carbon reservoirs and have experienced unprecedented wildfire activity in recent years. Record-breaking wildfires burned almost 7.8 million hectares of forest in 2023, about 6 times the country’s annual average for 2001-2022, with the flames largely fueled by warmer than average temperatures and drought conditions.
The significance of boreal forest fires extends beyond immediate destruction. Boreal forests store 30%-40% of all land-based carbon, making them critical climate stabilizers, with most of this carbon stored underground, including in permafrost, and historically protected from the infrequent and milder fires that occur naturally, but changes in climate and fire activity are melting permafrost and making soil carbon more vulnerable to burning.
Canada saw its second successive year of CO2 emissions over a billion tonnes, with wildfires in Jasper National Park alone causing over US $1 billion in damages. The persistence of extreme fire seasons in Canada demonstrates a fundamental shift in the region’s fire regime, with implications for global carbon cycles and climate feedback mechanisms.
The physical characteristics of Canada’s boreal forests contribute to their wildfire susceptibility. These forests consist primarily of coniferous species that contain flammable resins and oils. The region’s relatively flat terrain allows fires to spread across vast areas, while the remote nature of much of the boreal forest makes fire suppression challenging. Warmer nighttime temperatures are a major contributing factor, allowing fire activity to persist overnight.
Southeastern United States
While often overshadowed by western wildfires, the southeastern United States faces its own distinct wildfire challenges. March through May is the fire season in the southeastern United States. This region experiences a different fire regime than the West, with fires typically occurring during the spring before vegetation greens up and during drought periods.
The Southeast’s fire season is characterized by different physical conditions than western fires. Pine forests dominate much of the region, and these ecosystems historically experienced frequent, low-intensity fires that maintained forest health. However, decades of fire suppression have altered fuel loads, while climate change is creating conditions for more severe fires.
In the Southeastern United States, modeling suggests increased fire risk and a longer fire season, with at least a 30 percent increase in the area burned by lightning-ignited wildfire by 2060. The region’s humid climate has traditionally provided some protection against extreme wildfires, but changing climate patterns are eroding this buffer.
South America: Tropical and Subtropical Fire Regimes
South America has experienced some of the most severe wildfire seasons in recent years, particularly affecting the Amazon rainforest and the Pantanal wetlands. These fires have profound implications for global climate and biodiversity.
The Amazon Basin
The Amazon rainforest, traditionally resistant to fire due to its high humidity and moisture levels, has become increasingly vulnerable to wildfire. The first large wildfires of 2024 started very early in the Amazon anticipating a very difficult season across the region, with most of the Continent under severe drought conditions, and particularly the Amazon region since mid-2023, creating conditions favorable for increased wildfire activity.
In 2024, fires were responsible for nearly half (48%) of all tree cover loss in tropical primary forests like the Amazon and Congo Basin, which are critical to storing carbon, protecting biodiversity and regulating local climates. This represents a fundamental shift in the drivers of forest loss in these critical ecosystems.
The physical transformation of the Amazon makes it increasingly susceptible to fire. Deforestation creates forest edges that are drier and more vulnerable to fire penetration. Almost all fires that occur in the tropics are started by people, rather than by natural causes like lightning strikes, with managed fires commonly used in the region to clear land for new pasture or agriculture, but these fires can escape and escalate, with warmer and drier conditions fueling their spread.
Climate variability plays a significant role in Amazon fire activity. Wildfire risk in the tropics is further fueled by El Niño events, which are natural climate cycles that recur every 2-7 years, causing high temperatures and below-average rainfall in parts of the world, with El Niño heavily influencing the 2016 and 2024 fire seasons.
The Pantanal Wetlands
The Pantanal, the world’s largest tropical wetland, has experienced catastrophic fires in recent years. The catastrophic Pantanal wildfires ended up ravaging nearly 1.5 million hectares of its nearly 20 million hectares total extent. This represents an unprecedented level of destruction for an ecosystem that is normally characterized by high water levels and moisture.
The Copernicus Climate Change Service data showed the exceptionally high surface air temperatures and low soil moisture anomalies that favoured the breakout of fires in the region during June. The combination of extreme heat and drought transformed this wetland ecosystem into a tinderbox, demonstrating how climate extremes can override the natural fire resistance of even the wettest ecosystems.
In the Pantanal-Chiquitano region, extreme fire seasons like 2024-25, which once might have occurred only once or twice in a lifetime, could happen every 15-20 years by the end of the century if global greenhouse gas emissions continue. This projection illustrates how climate change is fundamentally altering fire return intervals in regions that historically experienced infrequent fires.
Bolivia and Venezuela
Other South American nations have also experienced severe wildfire seasons. Brazil and Venezuela recorded the highest wildfire carbon emissions on the GFAS dataset for February, with Bolivia, Guyana and Suriname experiencing the most intense wildfires since at least 2003 by a large margin as of mid-May.
Bolivia had its highest CO2 emissions total this century (700 million tonnes), as did four states of Brazil, three states of Venezuela, and over 20 states across Guyana, Peru, Suriname and Ecuador. These record-breaking emissions reflect the severity and extent of fires across northern South America during the 2024-25 fire season.
Australia: A Fire-Adapted Continent
Australia has one of the most fire-prone landscapes on Earth, with many ecosystems adapted to regular burning. However, climate change is pushing fire behavior beyond historical norms, creating unprecedented challenges for fire management and community safety.
Physical Characteristics of Australian Fire Regimes
Australia’s climate and vegetation create ideal conditions for wildfires. The continent experiences hot, dry summers with low humidity, particularly in southern regions. In Southern Australia, peak wildfire season tends to be later in the year, coinciding with the South Hemisphere’s spring and summer months.
Australian vegetation includes many fire-adapted species, particularly eucalyptus trees, which contain highly flammable oils and shed bark that acts as ladder fuel for crown fires. These characteristics, combined with the continent’s frequent droughts and strong winds, create conditions for intense, fast-moving fires that can be extremely difficult to control.
The 2019-2020 Black Summer fires demonstrated the catastrophic potential of Australian bushfires under extreme conditions. While specific recent data wasn’t captured in the search results, Australia continues to face significant wildfire challenges, with climate change increasing the frequency and intensity of dangerous fire weather conditions.
Mediterranean Europe: Ancient Fire Landscapes Under Pressure
The Mediterranean region of Europe has a long history of wildfire, but recent years have seen unprecedented fire activity across Spain, Portugal, Greece, and other southern European nations.
Spain and the Iberian Peninsula
Spain has experienced particularly severe fire seasons in recent years. In Europe, significant fires throughout the summer contributed to the highest annual total fire emissions on record for the European Union at just under 13 megatonnes of carbon. While European fires contribute less to global emissions than fires in other regions, they have significant impacts on local air quality and ecosystems.
By 17 August, the scale and intensity of the fires had surged, with CAMS data showing a sharp rise in fire intensity and smoke emissions, as Spain reached its highest annual total fire emissions in 23 years, with surface PM2.5 concentrations across large parts of the Iberian Peninsula far exceeding the WHO 24-hour average guidelines.
The Mediterranean climate of southern Europe creates a distinct fire regime. Hot, dry summers with little rainfall create ideal conditions for fire ignition and spread. The region’s mountainous terrain, with steep slopes and deep valleys, contributes to rapid fire spread and creates challenges for firefighting efforts.
Greece and Eastern Mediterranean
Greece regularly experiences severe wildfire seasons, with fires threatening both natural ecosystems and populated areas. The country’s landscape, characterized by mountainous terrain covered in shrubland and forests, combined with hot, dry summers and strong winds, creates conditions conducive to large, intense fires.
The physical features contributing to Greek wildfires include the prevalence of highly flammable vegetation such as pine forests and maquis shrubland, steep topography that accelerates fire spread, and seasonal wind patterns that can rapidly expand fire perimeters. Urban-wildland interfaces around major cities and tourist areas create additional risks to human populations and infrastructure.
Peak wildfire season in Europe tends to be from June to August. This timing corresponds with the hottest, driest period of the year when vegetation moisture content is at its lowest and fire danger is at its peak.
Africa: The Burning Continent
Africa experiences more area burned annually than any other continent, though the nature of African fires differs significantly from fires in other regions. Africa tends to be the region with the largest share of area burned — typically ranging from 6% to 8% each year.
Sub-Saharan Africa and Savannas
Much of Africa’s fire activity occurs in savanna ecosystems, where fire plays a natural and essential ecological role. In Angola and the Democratic Republic of Congo, satellite data indicated extensive fire activity across savannahs and agricultural lands, with these fires often set intentionally to clear land, supporting short-term agricultural productivity but having far-reaching consequences, including soil degradation, reduced biodiversity, and significant carbon emissions.
The physical characteristics of African savannas make them naturally fire-prone. These grassland ecosystems experience distinct wet and dry seasons, with abundant grass growth during wet periods providing fuel that dries out during the dry season. The relatively flat terrain allows fires to spread across vast areas, though these fires typically burn at lower intensities than forest fires.
Droughts and heatwaves, which are becoming more frequent and intense as global temperatures rise, contribute to increased flammability of landscapes and likelihood of large-scale wildfires in some parts of the world, with overall changes in the use of fire for agriculture, particularly in tropical Africa, along with increased prevention and wildfire management in some regions, resulting in a decreasing tendency over the past two decades.
South Africa’s Cape Region
South Africa’s Cape region experiences a distinct fire regime characterized by the fynbos vegetation type, a fire-adapted shrubland ecosystem. The region’s Mediterranean climate, with hot, dry summers and winter rainfall, creates seasonal fire danger periods. The mountainous terrain of the Cape, including the famous Table Mountain, contributes to rapid fire spread and creates challenges for fire management.
The fynbos ecosystem has evolved with fire and requires periodic burning for regeneration. However, the increasing frequency and intensity of fires, combined with urban expansion into fire-prone areas, creates growing risks to human communities. The Cape’s strong winds, particularly the southeaster wind, can rapidly spread fires and create dangerous conditions.
The Role of Climate Change in Amplifying Wildfire Risk
Climate change has emerged as a critical factor amplifying wildfire risk across all fire-prone regions. The evidence for climate change’s role in increasing wildfire activity has become increasingly clear and compelling.
Rising Temperatures and Extended Fire Seasons
Wildfires are becoming more frequent and severe as climate change drives hotter, drier conditions across the United States, with climate-driven drought, extreme heat, and drying vegetation having lengthened fire seasons and increased the rate of fire spread. This pattern is not limited to the United States but is occurring globally.
U.S. Forest Service scientists found that fire seasons are starting earlier in the spring and extending later into autumn, with parts of the Western United States, Mexico, Brazil, and East Africa now having fire seasons that are more than a month longer than they were 35 years ago. This extension of the fire season increases the window of vulnerability and strains firefighting resources.
For much of the U.S. West, projections show that an average annual 1 degree C temperature increase would increase the median burned area per year by as much as 600% in some types of forests. This dramatic projection illustrates the exponential relationship between temperature increases and fire activity.
Drought and Fuel Moisture
Climate change is increasing the frequency, duration, and severity of droughts in many fire-prone regions. The effects of climate change that contribute to increased wildfire risk include earlier snowmelt, rising temperatures which contribute to more prolonged heat waves, and drier summers, increased drought, and lower soil moisture content.
Climate change-driven droughts and extreme heat events increase the drying of organic matter in forests, the material that burns and spreads wildfire. This drying effect creates conditions where fires can ignite more easily and spread more rapidly once started.
Climate change is not only creating more dangerous fire-prone weather conditions, but it is also influencing the rates at which vegetation grows and provides fuel for the fires to spread, with analyses detecting the critical role of both extreme weather and fuel in the Los Angeles fires, with unusually wet weather in the preceding 30 months contributing to strong vegetation growth and laying the perfect foundations for wildfires to occur when unusually hot and dry conditions arrived in January.
Extreme Fire Weather Events
Extreme years commonly coincided with extreme (1-in-15-year) fire weather indices and featured a four and five-fold increase in the number of large fires and fire carbon emissions, respectively, compared with non-extreme years, with years with such extreme FWI metrics being 88-152% more likely across global forested lands under a contemporary climate compared to a quasi-preindustrial climate.
Human-caused climate change has been found to be the main cause for increasing fire weather in the American West. This attribution demonstrates that the changes we’re observing in wildfire activity are not simply natural variability but are driven by human-induced climate change.
Our annual reports are building unequivocal evidence of how climate change is increasing the frequency and severity of extreme wildfires, with many of these wildfires, in Pantanal and Southern California, for example, not being on an extreme scale without human-driven warming. This finding underscores the direct link between greenhouse gas emissions and wildfire severity.
Human Factors and the Wildland-Urban Interface
While physical features and climate create the conditions for wildfires, human activities play a crucial role in both ignition and the consequences of fires. In the United States, more than 80 percent of wildfires are caused by people. This statistic highlights the importance of human behavior in wildfire occurrence.
Opportunities for ignitions increase as population increases, especially at the wildland–urban interface, but when it comes to humans, we do more than cause ignitions, as we fragment burnable landscapes through intensive land use practices. The expansion of human development into fire-prone areas creates the wildland-urban interface, where homes and communities are directly exposed to wildfire risk.
Land use changes can both increase and decrease wildfire risk. Human activity in and around forests makes them more susceptible to wildfires and is a key driver of fire-related tree cover loss in the tropics and elsewhere, with improving forest resilience by ending deforestation and forest degradation being key to preventing future fires, as is limiting nearby burning that can easily escape into forests, particularly during periods of drought.
Historical fire suppression policies have also contributed to current wildfire challenges. Historical efforts to reduce all wildfires led to decades of fire suppression, which has caused a buildup of fuels in some forests, with this combination of fuel build-up and warmer, drier conditions increasing the potential for extreme fires.
Health and Economic Impacts of Wildfires
The impacts of wildfires extend far beyond the immediate burn area, affecting air quality, public health, and economic systems across vast regions.
Air Quality and Public Health
Wildfire-related air pollution spiked to between 13× and 60× above World Health Organisation standards in Brazil, Bolivia, India, and California. These extreme pollution levels pose serious health risks to millions of people, even those living far from active fires.
The aspect of wildfire smoke that poses the most significant health risk is particulate matter (PM2.5), with exposure to PM2.5 able to exacerbate asthma and other health conditions, impact brain function, and cause medical complications in pregnant people. The health impacts of wildfire smoke are particularly severe for vulnerable populations, including children, the elderly, and those with pre-existing respiratory conditions.
Because smoke can travel great distances on wind currents, these impacts not only affect communities near wildfires, but also communities far away, with smoke from Canadian wildfires reaching the Eastern U.S. and the Midwest in 2025. This long-range transport of smoke means that wildfire impacts are no longer confined to traditionally fire-prone regions.
Economic Consequences
The economic costs of wildfires have reached staggering levels. Globally, US$215 billion in physical assets were exposed to wildfires. This figure represents not just the value of structures destroyed but also the broader economic exposure to wildfire risk.
Individual fire events can cause catastrophic economic losses. The Los Angeles fires of January 2025 resulted in economic losses totaling $140 billion, making them among the costliest natural disasters in history. These costs include not only direct property damage but also business interruption, firefighting expenses, health care costs, and long-term economic disruption.
Beyond direct economic losses, wildfires affect insurance markets, property values, tourism, and regional economies. Communities in fire-prone areas face increasing insurance costs or loss of coverage entirely, creating additional economic challenges for residents and businesses.
Fire Management and Mitigation Strategies
Addressing the growing wildfire challenge requires comprehensive approaches that combine traditional fire management with innovative strategies adapted to changing conditions.
Fuel Management and Prescribed Fire
Managing vegetation to reduce fuel loads represents one of the most effective strategies for reducing wildfire risk. Prescribed burning, mechanical thinning, and other fuel reduction techniques can help restore more natural fire regimes and reduce the risk of catastrophic fires.
Not all wildfires are destructive, with many ecosystems worldwide, such as North America’s pine forests and prairies, being fire-adapted, and historically, periodic low-intensity fires having been vital in maintaining these landscapes. Reintroducing fire to fire-adapted ecosystems through prescribed burning can help reduce hazardous fuel accumulations while maintaining ecosystem health.
Incorporating wildfire risk mitigation into forest management strategies in fire-prone regions would help protect forest carbon and create jobs and support rural communities at the same time. This approach recognizes that effective fire management can provide multiple benefits beyond just reducing fire risk.
Technology and Early Detection
Advances in technology are improving our ability to detect and respond to wildfires. A step-change in our ability to predict wildfires is underway, driven by advances in tracking how living and dead vegetation fuels evolve on the landscape, with the ability to anticipate major fire events with far greater accuracy than ever before – in some cases, even a month in advance.
Satellite monitoring, artificial intelligence, drone technology, and improved weather forecasting are all contributing to better wildfire detection and prediction. These technologies can help identify fires in their earliest stages when they are most manageable and can provide critical information to firefighters about fire behavior and spread patterns.
Community Preparedness and Home Hardening
Protecting communities in fire-prone areas requires both landscape-level management and individual property protection. In reality, an individual home’s ability to survive wildfire is driven primarily by local conditions (known as the “Home Ignition Zone”), including the construction materials and the vegetation in the immediate area.
Home hardening measures, such as using fire-resistant building materials, creating defensible space around structures, and maintaining proper vegetation management, can significantly improve a home’s chances of surviving a wildfire. Community-wide adoption of these measures can create more fire-resilient neighborhoods.
Looking Forward: Adapting to a More Fire-Prone World
As climate change continues to alter fire regimes globally, adaptation and mitigation will become increasingly important. Human-caused climate change is raising the odds of extreme climate-driven fire years across forested regions of the globe, necessitating proactive measures to mitigate risks and adapt to extreme fire years.
Addressing the wildfire challenge requires action on multiple fronts. Reducing greenhouse gas emissions to limit future climate change remains essential for preventing further increases in wildfire risk. At the same time, communities must adapt to the reality of increased fire danger through improved land management, better building practices, and enhanced emergency preparedness.
Changes in climate add to these factors and are expected to continue to increase the area affected by wildfires in the United States. This projection applies not just to the United States but to fire-prone regions worldwide. The combination of physical features that make certain regions susceptible to wildfire and the amplifying effects of climate change creates a challenging future scenario.
International cooperation and knowledge sharing will be essential for addressing this global challenge. The State of Wildfires Report is the second annual global assessment of extreme wildfire events by ‘The State of Wildfires Project’, which is a global endeavour, uniting world-leading experts from more than 60 institutes across 20 countries. Such collaborative efforts help build the scientific understanding and practical knowledge needed to manage wildfires in a changing climate.
Conclusion
Wildfire-prone regions around the world share common physical characteristics that make them vulnerable to fire: dry climates, flammable vegetation, rugged topography, and exposure to extreme weather conditions. From California’s chaparral-covered mountains to Australia’s eucalyptus forests, from Canada’s vast boreal wilderness to the Mediterranean shrublands of southern Europe, these regions face growing wildfire challenges amplified by climate change.
The evidence is clear that climate change is fundamentally altering fire regimes globally, creating conditions for more frequent, more intense, and more destructive wildfires. Rising temperatures, extended droughts, longer fire seasons, and more extreme fire weather events are pushing wildfire behavior beyond historical norms. The physical features that have always made certain regions fire-prone are now being supercharged by a changing climate.
Understanding these wildfire-prone regions and their physical characteristics is not merely an academic exercise but a practical necessity for protecting lives, property, and ecosystems. As we move forward into an increasingly fire-prone future, this knowledge must inform land management decisions, community planning, building practices, and climate policy. Only through comprehensive approaches that address both the immediate challenges of wildfire management and the underlying drivers of increased fire risk can we hope to build resilience in the face of this growing threat.
The wildfire challenge is global in scope but local in impact. Each fire-prone region has its unique combination of physical features, climate patterns, vegetation types, and human factors that shape its fire regime. Yet the common thread running through all these regions is the growing influence of climate change in amplifying fire risk. Addressing this challenge will require sustained commitment to both climate mitigation and adaptation, informed by scientific understanding and implemented through coordinated action at all levels of society.
For more information on wildfire science and management, visit the National Interagency Fire Center, explore global fire data at NASA’s Fire Information for Resource Management System, learn about climate and wildfire connections at NOAA’s Wildfire Portal, access European fire monitoring through the Copernicus Atmosphere Monitoring Service, and review comprehensive wildfire research in the annual State of Wildfires Report.