From ember to inferno: Wildfires in B.C. explained 

by Alyssa Hill

In British Columbia, many communities have a new name for summer: wildfire season. Local decision-makers like municipal councils and staff, Nation councils, and other leaders have a critical role to play in reducing wildfire risk and safeguarding their communities during the season of smoke and fire. Here’s the latest information on climate change and wildfire, and what you need to know as you plan for wildfire mitigation and safety. 

Fire is a natural process and many landscapes and ecosystems in B.C. have evolved with fire. However, B.C. has experienced increased wildfire activity over the last 20 years. 2017, 2018, 2021, and 2023 marked four of the most severe fire seasons in terms of area burned, number of wildfires, number of people evacuated, and costs of response and damage.

Research shows that climate change is making wildfires larger, more frequent, and more severe. Climate change is driving wildfire activity in several ways:

  1. Extreme weather conditions conducive to starting and spreading fires (i.e. hot, dry, and windy conditions) are happening more often.
  2. Warmer spring temperatures, earlier snowmelt, and warmer fall temperatures are making fire seasons longer.
  3. Lightning strikes, which ignite wildfires, are happening more often.

It’s not just climate change that is driving more wildfires though — land use policies and forest practices have also contributed to increased wildfire risk. B.C. has a long history of putting fires out and keeping fire off the landscape to protect timber and nearby communities.

Decades of fire suppression along with forest management practices (e.g. logging fire-resistant trees, not burning “slash” after logging, and replanting monocultures) mean that many forests and grasslands haven’t burned for years and have accumulated wildfire “fuel.”

At the same time, more communities across B.C. are at risk to wildfires because they live in or near the “wildland urban interface,” where forests (and potentially fire) meet communities. Communities like Lytton, West Kelowna, and many others have experienced the effects of severe and out of control wildfires. These effects have been well-documented by researchers and communities alike.

Health: Wildfires have widespread impacts on our healthPoor air quality from smoke can increase respiratory issues, emergency department visits, and hospitalizations. Wildfires can also have negative mental health effects, particularly related to evacuation and post-wildfire recovery.

Economy and livelihoods: Wildfires disrupt tourism, forestry, energy production, and agriculture resulting in lost revenue. Government spending on wildfire response and damages is increasing, with the 2023 season costing $1 billion and contributing to the province’s deficit for the 2023/24 fiscal year. 

Homes and infrastructure: Wildfires can damage homes and public and private infrastructure. Insured losses from the 2023 season were more than $720 million and insurance premiums in high-risk areas are increasing.

Ecosystems: While fire can be beneficial for ecosystems, severe wildfires can have negative effects on biodiversity, soil and landscape productivity, contaminate freshwater and drinking water and disrupt salmon and aquatic ecosystems. Wildfires can change hydrology and watershed function and increase the chance of other events like floods and landslides.

Indigenous communities: Indigenous communities across Canada have knowledges and solutions for co-existing with fire but are also disproportionately affected by severe wildfires and evacuations. Approximately 80% of Indigenous communities are in or near forests that burn frequently and when communities and their territories experience wildfires, the interconnected cultural, social, environmental, and economic impacts can take years to recover from.

Photo credits: iStock

Local, regional, and First Nations governments have a key role in wildfire mitigation, preparedness, response, and recovery. Here are some considerations as you plan to protect your communities from wildfire:

References

Alyssa Hill is a project analyst with the Pacific Institute for Climate Solutions.