Timeline of a Prescribed Burn
Timeline of a Prescribed Burn
Site Evaluation and Unit Design: The land is evaluated critically in terms of density of live vegetation, amount of dead fuel on the ground, duff depth, and topography. Selective thinning and fuels removal may be necessary before the introduction of prescribed fire.
Writing a Burn Plan: Desired outcomes are formulated and a prescription is written to meet the objectives, taking into consideration the season, weather parameters, smoke mitigation, equipment and personnel required.
Permits are obtained and all laws and regulations are followed carefully.
Unit Preparation: Control lines are put in place and the surrounding vegetation is mowed down to keep the fire within its desired footprint.
Weather Watching: The weather forecast is carefully monitored to find the appropriate burn window that matches the parameters in the prescription and the fuel moisture levels are evaluated for optimal fire behavior.
Burn Implementation: The Big Day has arrived! All the equipment is set up and tested. The personnel is briefed about the objectives and how they will be met. Hazards are identified, contingency plans are reviewed, and emergency services are contacted. The weather forecast and expected fire behavior is shared, making sure that the parameters are within prescription. A small test fire is lit to check that everything is going as expected.
Fire Monitoring: During the burn, fire behavior, smoke, and weather are carefully monitored. The effects on the vegetation are evaluated and ignition patterns may be adjusted to reflect changing conditions or to better meet objectives.
Mop-Up: Once the fire is done burning, the perimeter is secured with tools and water to the standards set in the burn plan. This is done to prevent any accidental spread out of the control lines during the night.
Patrol: Even though flames may not be present, it is important to keep on checking the unit at least twice a day for residual heat and smoke. This may indicate continued combustion in the duff layer or underground activity in root systems or rotten logs. Any problem area is tooled and sprayed with water until the fire is completely extinguished. This may take several days!
After-Action Review: After the burn, a review is conducted to understand what went well and what could potentially be improved. The effects of the fire on vegetation and fuels are evaluated in context of the stated objectives.
Post-Fire Monitoring: The site is visited during the following seasons to evaluate the long-term effects of the burn and to inform the next steps in land stewardship, including the potential reintroduction of a prescribed fire.