Wildfire Terminology

1. Spinning vortex column containing smoke, debris, and flame
3. A long, narrow extension of a fire coming from the main body
7. Fire ignited outside of the main body
9. The part of a containment or control line that is scraped or dug to mineral soil
10. The burning of a single tree or small group of trees from the bottom up
12. The area that was ignited first
13. Most rapidly spreading portion of the fire's perimeter
15. Unit of measure in land survey, commonly used to report fire perimeters and other fireline distances
16. The completion of a control line around a fire and any spot fires in the area
17. Portion of the fire's perimeter that is opposite of the head
19. Portion with slower rates of fire spread
20. Fire burning with a low flame and slowly spreading
21. Any sudden acceleration or intensification of the burning of fire
22. Extinguishing or removing burning materials around a control line
23. Fire burning without the presence of a flame

2. Unburned area within the fire's perimeter
4. Behavior of a fire spreading rapidly
5. Unburned areas caused by fingers or slow burning
6. A fire that advances from top to top of trees, independent of a surface fire
7. Behavior of sparks and embers of a fire that are carried by the wind and start new fires out of the main body
8. The parts of the fire's perimeter that are roughly parallel to the direction of spread
9. The outer edge of a fire
11. A term for all constructed and natural barriers
14. A barrier so fire doesn't spread to construct a fireline
18. The status of the suppression of a wildfire that signifies the completion of a control line
21. The zone of a moving fire where the combustion is primarily flaming