0

Fuels do not ignite readily from small firebrands although a more intense heat source, such as lightning, may start fires in duff or punky wood. Fires in open cured grasslands may burn freely a few hours after rain, but woods fires spread slowly by creeping or smoldering, and burn in irregular fingers. There is little danger of spotting.

CBI = (((110 - 1.373 * RH) - 0.54 * (10.20 - T)) * (124 * 10^{(-0.0142 * RH)}))/60

T	air temperature	[°C]
RH	relative humidity	[ %]