Event (19) Two convection columns converge.

Air Observer or Field Observer

Photo: Kaz Gorrie. 148.96° -35.33° looking NW at 10:30 AEDST, 18th January 2003.

This photo shows two major smoke plumes converging. It is taken from downwind. Not the bend in the right-hand plume, where it is clearly being drawn towards the other, larger plume. There is an obvious blue-sky gap between the two plumes.
The photographer, along with a number of other firefighters, was forced to take shelter during a burnover situation that closely followed this observation.

Implications

Phenomenon	Urgency	Indicated Red Flag Warning
Deep flaming zone	?	2) Conditions conducive to plume-driven fire
Wind Change at Fire	?	5) Wind change
Convergence Zone	3	????

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This material arises from work carried out by the HighFire Risk Project.

Material prepared by R. McRae September 2009.