Historical AnalysisAverage Fire Danger for Fire Season
(click on map for larger image)
Fire Danger is a relative index of how easy it is to ignite vegetation,
how difficult a fire may be to control, and how much damage a fire may do.
Note: These general fire descriptions apply to most coniferous forests.
Choice and interpretation of classes may vary between provinces. For fuel-specific fire behavior,
consult the Fire Behavior Prediction maps.
LOW
![LOW](/web/20061102104803im_/http://cwfis.cfs.nrcan.gc.ca/images/static/di_blue_low.gif) |
Fires likely to be self-extinguishing and new ignitions unlikely.
Any existing fires limited to smoldering in deep, drier layers. |
MODERATE
![MODERATE](/web/20061102104803im_/http://cwfis.cfs.nrcan.gc.ca/images/static/di_green_moderate.gif) |
Creeping or gentle surface fires. Fires easily contained by ground crews with
pumps and hand tools. |
HIGH
![HIGH](/web/20061102104803im_/http://cwfis.cfs.nrcan.gc.ca/images/static/di_yellow_high.gif) |
Moderate to vigorous surface fire with intermittent crown involvement.
Challenging for ground crews to handle; heavy equipment (bulldozers, tanker trucks, aircraft)
often required to contain fire. |
VERY HIGH
![VERY HIGH](/web/20061102104803im_/http://cwfis.cfs.nrcan.gc.ca/images/static/di_orange_vhigh.gif) |
High-intensity fire with partial to full crown involvement.
Head fire conditions beyond the ability of ground crews; air attack with retardant required
to effectively attack fire's head. |
EXTREME
![EXTREME](/web/20061102104803im_/http://cwfis.cfs.nrcan.gc.ca/images/static/di_red_extreme.gif) |
Fast-spreading, high-intensity crown fire. Very difficult to
control. Suppression actions limited to flanks, with only indirect actions
possible against the fire's head. |
NIL
![NIL](/web/20061102104803im_/http://cwfis.cfs.nrcan.gc.ca/images/static/di_grey_nil.gif) |
No calculations were performed for this region. |
More information about the Canadian Forest Fire Danger Rating System (CFFDRS) and Fire Weather Normals is available in Background Information.
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