Skip to main content

NWCG Glossary of Wildland Fire, PMS 205

Overview

The NWCG Glossary of Wildland Fire provides an extensive listing of approved terms and definitions used by the NWCG community. It contains terms commonly used by NWCG in the areas of wildland fire and incident management and is not intended to list all terms used by NWCG groups and member agencies. The NWCG has directed that all committee and subgroup product glossaries be contained within the NWCG Glossary of Wildland Fire to maintain definition consistency and clarity among documents.

Comments, questions, and recommendations shall be submitted to the appropriate agency program manager assigned to the Data Standards and Terminology Board (DSTB). 

NWCG Glossary of Wildland Fire, PMS 205  (Quick View)

EDG Explorer is a database platform used for managing NWCG Glossary terms.  The following table is a quick view of the terms found in EDG. More detailed information such as rules, documentation, and term relationships may be viewed in EDG Explorer.  

Note: If the NWCG Glossary of Wildland Fire is not displaying below please report it to NWCG Webmaster

Title Steward Status Definition
performance oriented objectives IPSC Incident and Position Standards Committee Archived

On-the-job performance enhancement is a result of online training. Performance oriented objectives or learning objectives for this training is developed, agreed to, and tested to ensure skill transfer. The purpose of learning objectives is to define the type of learning or performance outcomes that will occur at the conclusion of instruction and how learning will be assessed. Both objectives and performance outcomes should be written as precisely as possible in order to best determine whether they have been achieved. 

perimeter access IOSC Incident Operations Subcommittee Archived

Any road, trail, or route that will allow firefighting forces to reach the perimeter of a wildland fire.

perimeter date time FRSC Fire Reporting Subcommittee, GSC Geospatial Subcommittee Approved

The date and time that the fire perimeter was collected (mapped).

Perimeter Extant Approved
period of alert IOSC Incident Operations Subcommittee Archived

Period of time when suppression crews, equipment, and aircraft are kept ready for deployment on short notice; usually employed when fire danger reaches a predetermined severity index.

permafrost FWS Fire Weather Subcommittee Approved

A short term for "permanently frozen ground"; any part of the earth's crust, bedrock, or soil mantle that remains below 32° F (0° C) continuously for a number of years.

permission hierarchy DMC Data Management Committee In Development

A system created to rank create, read, update, delete actions on business applications to ensure a system can only take those actions when they are considered an authoritative data source, which varies based on the state of the incident.

permission state DMC Data Management Committee Grandfathered

The authorization stage of create, read, update and delete actions in an application based on where the incident is occurring within the lifecyle.

perpendicular lane technique WFISC Wildland Fire Investigation Subcommittee Approved

A search technique dividing the specific origin area into lanes that are perpendicular to the advancing fire progression for the purpose of a systematic examination.

Personal Protective Equipment ETC Equipment Technology Committee Approved

That equipment and clothing required to mitigate the risk of injury from or exposure to hazardous conditions encountered during the performance of duty. PPE includes but is not limited to: fire resistant clothing, hard hat, flight helmets, shroud, goggles, gloves, respirators, hearing protection, chainsaw chaps, and shelter. 

personnel accountability IOSC Incident Operations Subcommittee Approved

The ability to account for the location and welfare of personnel, accomplished when supervisors ensure that the ICS principles and processes are functional and personnel are working within these guidelines.

personnel pool NIMSIC National Incident Management System Integration Committee Archived

Personnel who have reported to the incident without an assignment (i.e., they are not assigned to an increment, strike team, or organizational unit).

photo point WFISC Wildland Fire Investigation Subcommittee Approved

The documented location where a photograph was taken.

piling and burning FUSC Fire Use Subcommittee Approved

Piling slash resulting from logging or fuel management activities and subsequently burning the individual piles.

Pilot Balloon Operation FWS Fire Weather Subcommittee Approved

A method of determining winds aloft by periodically reading the elevation and azimuth angles of a theodolite, usually at one-minute intervals, while tracking the ascent of a small free-lift balloon. A PIBAL is commonly used for constructing a wind profile. 

pilot-in-command NIAC National Interagency Aviation Committee Approved

Pilot responsible for the operation and safety of an aircraft during flight time.

pilotage NIAC National Interagency Aviation Committee Approved

Navigation of aircraft by visual reference to landmarks.

pin flags WFISC Wildland Fire Investigation Subcommittee Approved

Colored flags attached to metal or plastic pins to designate the location of fire pattern indicators, evidence, and other items of interest.

pin lug coupling ETC Equipment Technology Committee Approved

A hose coupling with one or more cylindrical studs on its outside rim. The studs allow the use of a spanner wrench to tighten the coupling.

pincer action IOSC Incident Operations Subcommittee Approved

Direct attack around a fire in opposite directions by two or more attack units. Usually conducted from the fire's tail to head.

ping-pong ball system NIAC National Interagency Aviation Committee, ETC Equipment Technology Committee Approved

Mechanized method of dispensing DAIDs (Delayed Aerial Ignition Devices) at a selected rate. The DAIDs are polystyrene balls, 1.25 inches in diameter, containing potassium permanganate. The balls are fed into a dispenser, generally mounted in a helicopter, where they are injected with a water-glycol solution and then drop through a chute leading out of the helicopter. The chemicals react thermally and ignite in 25-30 seconds. The space between ignition points on the ground is primarily a function of helicopter speed, gear ratio of the dispenser, and the number of chutes used (up to four). 

pithy stalk WFISC Wildland Fire Investigation Subcommittee Approved

A vascular plant that has a usually continuous central internal stand of spongy tissue in the stem.

plan of attack IOSC Incident Operations Subcommittee Approved

The selected course of action and organization of personnel and equipment in fire suppression, as applied to a particular fire or to all fires of a specific type.

planetary boundary layer FWS Fire Weather Subcommittee Approved

That part of the earth's lower atmosphere that is directly influenced by the presence of the earth's surface and responds to surface forcings such as fronts, friction, evapotranspiration and convective mixing.

planimetric map Approved

A map that shows the positions of feature swithout showing the elevations of all hills and valleys of the land. It can include rivers, lakes,roads, boundaries, or other human-made symbolic features.

planning interval NIMSIC National Incident Management System Integration Committee Archived

Period of time between scheduled planning meetings.

planning meeting NIMSIC National Incident Management System Integration Committee Approved

The meeting which serves as a final review and approval, by the Command and General Staff, of operational plans and resources requirements. This meeting is an element of the Planning Cycle.

Planning Section NIMSIC National Incident Management System Integration Committee Approved

The ICS Section that collects, evaluates, and disseminates operational information related to the incident and for the development of the IAP. This section also maintains information on the current/forecasted situation and on the status of resources assigned to the incident.

Plastic Sphere Dispenser NIAC National Interagency Aviation Committee Approved

Device installed, but jettisonable, in a helicopter, which injects glycol into a plastic sphere containing potassium permanganate, which is then expelled from the machine and aircraft. This produces an exothermic reaction resulting in ignition of fuels on the ground for prescribed or wildland fire applications. 

plow line ETC Equipment Technology Committee Approved

Fireline constructed by a tractor plow.

plume FUSC Fire Use Subcommittee Approved

A convection column generated by combustion (of wildland fuel).

plume rise FUSC Fire Use Subcommittee Approved

How high above the level of release an emission plume rises.

plume-dominated wildland fire FUSC Fire Use Subcommittee Approved

A wildland fire whose activity is determined by the convection column.

PM10 FUSC Fire Use Subcommittee Approved

Particulate matter of mass median aerodynamic diameter (MMAD) less than or equal to 10 micrometers.

PM2.5 FUSC Fire Use Subcommittee Approved

Particulate matter of mass median aerodynamic diameter (MMAD) less than or equal to 2.5 micrometers.

pocket weather meter FWS Fire Weather Subcommittee Approved

A handheld electronic device that measures temperature, humidity, wind speed, and possibly other atmospheric variables, depending on brand and model.

pockets of a fire FBSC Fire Behavior Subcommittee Approved

Unburned indentations in the fire edge formed by fingers or slow burning areas.

point date time Approved

The date and time that the fire point was collected in the field.

point name Approved
point of attack IOSC Incident Operations Subcommittee Approved

That part of the fire on which work is started when suppression crews arrive.

point of origin WFISC Wildland Fire Investigation Subcommittee Approved

The exact physical location within the Ignition Area where a heat source and the local fuel interact, resulting in a fire.

point of origin accuracy descriptor Approved

Description of the methods used to determine the certainty and precision of the fire location at the point of origin.

point of origin aspect code Approved

A code used to describe the direction toward which the predominant slope faces at the point of origin of the fire (including ridgetops and/or flat ground). Point of origin is the location where a competent ignition source came into contact with the material first ignited and sustained combustion occurred.

point of origin county code Approved

The County Code identifying the county or equivalent entity at point of origin designated at the time of collection. Point of origin is the location where a competent ignition source came into contact with the material first ignited and sustained combustion occurred.

point of origin datum Approved

The datum associated with the coordinates that identify the point of origin. Point of origin is the location where a competent ignition source came into contact with the material first ignited and sustained combustion occurred.

point of origin fire intensity level code Approved

An expression of fire intensity based on observed and/or calculated flame lengths representative across the immediate vicinity of the point of origin during the initial response. Point of origin is the location where a competent ignition source came into contact with the material first ignited and sustained combustion occurred. Fire intensity levels (FILs) provide "an expression of fireline intensity, based on typical and/ or calculated flame length of a fire behavior condition. FILs are used in the analysis to reflect the differences in difficulty of suppression and fire effects on natural and cultural resources." (Ref. FSH5109.19 ch40.5 9/85)

point of origin landowner category Approved
point of origin landowner category code Approved

More specific classification of land ownership within land owner kinds identifying the owner at the point of origin at the time of the incident. Owner in the context of this data element refers to the agency or entity having the land management responsibility at the point of origin if they are not the legal owners. E.g., NPS may be the designated "owner" even though the US Federal Government holds title to the land.

point of origin landowner kind Approved

Broad classification of land ownership at the point of origin.

point of origin latitude Approved

The latitude location of the point of origin specified in decimal degrees. Point of origin is the location where a competent ignition source came into contact with the material first ignited and sustained combustion occurred.

Displaying 1751 - 1800 of 2582

How to Print or Download Glossary of Wildland Fire, PMS 205

Modified / Reviewed:

NWCG Latest Announcements