The need to accurately appraise potential wildland fire behavior is embedded in nearly every fire management decision. And, because of potentially adverse impacts to wildland firefighter safe­ty, the public-at-large, and other values at risk, particular emphasis needs to be devoted to the pre­diction of extreme or severe fire behavior. In addressing these significant wild­land fire safety needs, the wildland fire behavior research and devel­opment activities at the Canadian Forest Service?s Northern Forestry Centre have two broad objectives: 1) To conduct fundamental and applied research to develop math­ematical models and operational guidelines for predicting the characteristics of the various phe­nomena associated with extreme fire behavior; and 2) To ensure that fire managers and other clients are aware of the cur­rent state of knowledge regarding wildland fire dynamics.