COMMS
The act of connecting a control line to another fireline or an intended fire break
What is, to Tie-In?
Chance that a fire brand will cause an ignition when it lands on receptive fuels
What is, Probability of Ignition?
What is, a Backing Fire?
Used in some localities to specify fire set to spread against the wind in prescribed burning.
What is, a Backing Fire?
Arrangement of connected lengths of hose and accessories on the ground, beginning at the first pumping unit and ending at the point of water delivery.
What is, a Hose Lay?
An advantageous location, usually a barrier to fire spread, from which to start constructing a fire line. used to minimize the chance of being flanked by the fire while the line is constructed.
What is, an Anchor Point?
Measured from the surface upward, the height of which relatively vigorous mixing occurs due to convection
What is, Mixing Height?
Behavior of a fire spreading rapidly with a well-defined head
What is, a Running Fire?
Setting fire to more than one strip of fuel and providing for the strips to burn together. Typically done while burning against the wind which inner strips are fired first to pull flames and sparks away from the control line.
What is, Strip Firing?
This device has a GPM output capable of filling a swimming pool in 3 minutes.
What is, a Fire Hydrant?
A phrase meaning, to contain the fire along a flank and begin containing it across the head.
The decrease in concentration of airborne pollutants as they spread throughout an increasing volume of atmosphere.
What is, Dispersion?
Sides of the fire, parallel to the main direction of the spread. May have active fire, but not as hot as the head of the fire.
What is, a Flank, or Flanking Fire?
Setting fire inside a control line to consume fuel between the edge of the fire and the control line.
What is, a Burn-Out?
A technique that minimizes operator fatigue and is designed for speed and efficiency.
What is, Pump and Roll?
The speed at which a fire moves in a horizontal direction across the landscape, usually expressed in chains per hour, or feet per minute
What is, Inversion?
What is, Torching?
A firing technique consisting of treating an area with lines of fire set into the wind which burn outward at right angles to the wind.
What is, a Flank Fire?
What is, a Water Hammer?
Geographical points on the ground or specific points in time where an escalation or alternative of management actions is warranted. Timely implementation of the action when the fire reached the action point is generally critical to successful accomplishment of objectives.
What are, Trigger Points?
A circular-like flow of air (or water), brought by pressure irregularities. For example, conditions may be erratic and play off the downwind side of large rocks, outcroppings, buildings, etc.
What is, an Eddy Effect?
A spinning vortex column of ascending hot air and gasses rising from a fire and carrying aloft smoke, debris, and flame. Can be a sign of unstable conditions but also common while turning corners.
What is, a Fire Whirl?
Method of igniting prescribed fires in which ignition points are set individually with predetermined spacing and timing throughout an area to be burned.
What is, Grid/Point Source Ignition?
Direct attack around a fire in opposite directions by two or more attack units. Usually conducted from the fire's tail to head.
What is, a Pincer Attack/Action?