WATCHOUT NO.1
DYNAMIC CHANNELLING

INDICATOR EVENTS

OBSERVED EVENT	PRIORITY OF REACTION
Hot fire on lee-side of hill, lee wind field full of smoke	3
Fire flank follows dog-leg around lee-slope	3
Upwind edge of fire locked into break in slope	3
Dense "orange" plume of smoke on upwind corner of fire, at top of a lee slope	1
Fire jetting out of lee-slope eddy away from main fire	1
Intense spotting on fire flank	2
Flank becomes headfire	?
Ember storm	2

RESULTANT RED FLAG WARNINGS

RED FLAG WARNING	INDICATION LEVEL	SIGNIFICANCE
1) Plume-driven fire	Suggested	A
2) Conditions conducive to plume-driven fire	Suggested	C
3) Passage of dry slot over fire	Suggested	C
6) Channelling event	Mandatory	B
9) Unusual combustion	Suggested	C
10) Intense spotting	Suggested	B

DETAILED MATERIAL

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

Material prepared by R. McRae September 2009.