Fire Behavior Field Reference Guide,
PMS 437
Questions? Please contact:
Fire Behavior Subcommittee
The Fire Behavior Field Reference Guide (FBFRG), PMS 437, is now hosted on the NWCG website.  It is no longer available from its old location (, although visitors to that site will be redirected to the new location.  Please share this information with your wildland fire communities. 
The FBFRG is a hands-on publication for use in the field, in fire behavior training, and as a learning reference.
Link to publication here
National Wildfire Coordinating Group
Our mission is to provide national leadership to enable interoperable wildland fire operations among federal, state, local, tribal, and territorial partners.  NWCG operations standards are interagency by design; they are developed with the intent of universal adoption by the member agencies.  However, the decision to adopt and utilize them is made independently by the individual member agencies and communicated through their respective directives systems.
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