At common law, the malicious and willful burning of another's dwelling, outhouse, or parcel; by most modern statutes, the intentional or wrongful burin gof someone else's, orone's own property. Frequently requires proof of malicious or wrongful intent.

Any unauthorized use of fire or incendiary devices by an individual under the ae of 18, including incidents caused by curiosity and exploration with fire.

Discarded or improperly managed cigarette butts or other smoking paraphanalia that leads to a wildfire ignition.

Refers to wildfire incidents where an investigation did not identify a clear or definitive cause of origin.

Systems designed to produce, transport and distribute energy. (summary of information found in PMS 412 and FI-210)

Any composition or device designed to produce a visible or audible effect by  combustion, deflagration, or detonation, and which meets the defintion of "consumer fireworks"  or "display fireworks" as defined in 27 CFR 555.11.

Refers to wildfire ignitions not classified under common cause categories. 

A fire spreading from any fire originally set for the purpose of clearing land or for rubbish, garbage, range, stubble, or meadow burning.