October 26 – While the fall season generally brings about less wildfires, valley residents should be aware of smoke that comes along with prescribed burns. Prescribed burn season typically goes from mid-October to the end of November, depending on local conditions in the Pacific Northwest. Unlike wildfires, prescribed burns are low-intensity planned fires that benefit our forests when done correctly.  

How are prescribed burns planned? 

Planning for prescribed burns begins months in advance, with the location identified early on. Each burn accomplishes a set of predetermined goals that can range from minimizing future extreme wildfires to improving local forest health. Although prescribed burns are planned in advance, they may be canceled if local conditions make burning unsafe. Temperature, humidity, and wind levels are closely monitored in the days and hours leading up to the burn.  

For a prescribed burn to occur, specific wind requirements must be met. Wind levels must be strong enough to remove smoke from the burn site but not too strong that the fire becomes difficult to control. Fire planners review and forecast smoke conditions to avoid adding unnecessary smoke. Even with careful planning, residents may notice smoke heading in their direction during and after a burn event. Although the smoke is from a controlled fire, it is still important to have up-to-date information on where prescribed burns are happening.  

How can I know that a prescribed burn is planned? 

The Washington State Department of Natural Resources (DNR) launched a notification service that allows you to receive email and/or text alerts about upcoming prescribed burns. Through the DNR Burn Portal, you can choose one or more locations and set the distance around those locations where you’d like to receive notifications. For more information and to sign up for notifications for your area of interest, please visit the DNR Burn Portal. 

What are some ways that I can prepare for a prescribed burn?  

It is still important to remain alert and prepare for fires and smoke, especially if you are in a vulnerable population. One of the most important things you can do during prescribed burn season is to continue monitoring air quality. Remain indoors or wear a mask if smoke levels are higher than a healthy range. If the AQI rises to 100 – 150, sensitive groups such as those with asthma are strongly encouraged to wear a mask. If the AQI exceeds 151, everyone should consider taking precautions such as limiting outdoor exposure and wearing a mask.