Emergency Dispatch Vol 4 2014
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WHAT<br />
IS A<br />
FIRE<br />
WHIRL?<br />
A fire whirl, also known as<br />
a fire devil or fire tornado,<br />
is a rare phenomenon in<br />
which a fire, under certain<br />
conditions (depending on<br />
air temperature and currents)<br />
acquires a vertical<br />
vorticity and forms a whirl,<br />
or tornado-like vertically<br />
oriented rotating column<br />
of air. Fire whirls may be<br />
whirlwinds separated from<br />
the flames, either within<br />
the burn area or outside it,<br />
or a vortex of flame, itself.<br />
A fire whirl can make the<br />
fire more dangerous as it<br />
encourages the fire to spot.
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