Incorporating breaching and spotting considerations into PROMETHEUS - the Canadian wildland fire growth model
Document Type: Other
Author(s): Martin E. Alexander; Cordy Tymstra; K. W. Frederick
Publication Year: 2004

Cataloging Information

  • Alberta
  • Albini's maximum spot fire distance models
  • area ignition
  • barriers to fire spread
  • Canada
  • CFFDRS - Canadian Forest Fire Danger Rating System
  • Chisholm and Dogrib Fires
  • FBP - CFFDRS Fire Behavior Prediction System
  • fire brands
  • FWI - Canadian Forest Fire Weather Index System
  • probability of ignition
  • Prometheus
  • spotting
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Record Maintained By:
Record Last Modified: November 5, 2019
FRAMES Record Number: 9598


A workshop was held at the Provincial Forest Fire Centre in Edmonton on September 23, 2004 where wildland fire research and fire operations personnel (T. Van Nest, D. Quintilio, J. Beverly, D. Cousin, G. Baxter and authors) reviewed and discussed the currently available knowledge with respect to incorporating spotting and other breaching considerations into PROMETHEUS. The following conclusions were reached: 1) the simple rule of thumb for firebreak breaching should be incorporated immediately (that in the absence of severe spotting, a firebreak needs to be 1.5 times the expected flame length); 2) Albini's maximum spot fire distance models could possibly be implemented, with appropriate Canadian modifications, in the form of an auxiliary calculator or as tabulated output, thereby allowing the user the option to add new ignition points when and where appropriate; 3) additional research is needed in order to derive the rules of thumb based on an analysis of existing wildfire case studies and/or an expert opinion for determining barrier or firebreak breaching by massive spotting (i.e.,'area ignition') for those situations not covered by the simple rule of thumb.

[This publication is referenced in the "Synthesis of knowledge of extreme fire behavior: volume I for fire managers" (Werth et al 2011).]

Online Link(s):
Link to this document (192 KB; pdf)
Alexander, M.E., C. Tymstra and K.W. Frederick. 2004. Incorporating breaching and spotting considerations into PROMETHEUS - the Canadian wildland fire growth model. Chisholm/Dogrib Fire Research Initiative Quicknote 6. Hinton, AB: Foothills Research Institute. 2 p.