Documentation:MFD/Term/initial spread index

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initial spread index

MFD (Multilingual Forestry Dictionary)
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initial spread index noun

The Initial Spread Index (ISI) is a numeric rating of the expected rate of fire spread. It combines the effects of wind and the FFMC on rate of spread without the influence of variable quantities of fuel[1].



indice de propagation initiale (IPI)[2].




  1. Canadian Forest Fire Weather Index (FWI) System. Natural Resources Canada. Retrieved 2019, October 26.
  2. Environmental Canada (1984). Tables for the Canadian Forest Fire Weather Index System. Retrieved 2019, October 26.!Project/FireBehaviour/Canadian%20Fire%20Behaviour%20for%20AU/FWI%20Tables.pdf
  3. XIN, Xiao-ying (2011). "Canadian forest fire weather index(FWI) system: a review". Journal of Zhejiang A&F University: 314–318.