Table 1 Conditions selected for igniting the prescribed fire and average burning conditions when the fire was ignited. Fuel moisture conditions specified for the L and F layers (combined) were separated from the H layer in the original fire prescription (from Davis et al. 1968).

Fuel moisture:

L and F layers

6 % to 12 %

8.6 %

H layer

15% or more

17.6 %

Fuel temperature

26.6 °C average

30.0 °C in sunlight 23.8 °C in shade

Air temperature

23.8 °C or higher

23.8 °C

Wind velocity in flame zone (0.6 m above surface)

3.2 km hr⁻¹ to 8.1 km hr⁻¹

1.6 km hr⁻¹ to 6.4 km hr⁻¹

Weather

Clear

Clear