Common Denominators of Fire Behaviour for Tragedy Fires
These were developed after studying fire line deaths. All the
incidents had one or more of the following common
Hopefully, if crews understand this information they will
be more carefull and prevent further "studies."
Most incidents happen on the smaller fires or on
isolated portions of larger fires.
Most fires are innocent in appearance before the
"flare-ups" or "blow-ups". In some cases, tragedies
occur in the mop-up stage.
Flare-ups generally occur in deceptively light fuels.
Fires run uphill surprisingly fast in chimneys,
gullies, and on steep slopes.
Some suppression tools, such as helicopters or air
tankers, can adversely affect fire behaviour. The blast
of air from low flying helicopters and air tankers have
been known to cause flare-ups.
Last updated 4 November 2014