Kenlynn Castaways Beach BMP

6.0 Nature and Severity of Potential Bushfire Attack
6.1       Bushfire season and Fire Weather

The “typical fire season” in this area peaks between September and November. The predominant winds in
the area are south easterly, however during the fire season, hot gusty westerlies of over 30 kph can be
expected, with Relative Humidity falling to 10% and less. Temperatures on these days can climb over 35⁰C ,
and for two or three days a year, fire weather conditions equivalent to FDI levels of around 50 can be
anticipated. (Note that this is in contrast to the value of 40 which Queensland is currently using in the
recently revised AS3959 - 2009).




Figure 12. State Government revised FDI values to FDI 50 for the area involved. (CSIRO, 2014).


6.2       Anticipated direction of bushfire attack

The possible directions of attack would be from the west, potentially coinciding with the direction of some of
the worse fire weather for the region, with backing fires arising from spotovers possibly approaching from
north, east or south. This is shown in Figure 4.

Section 6.3 models these scenarios of fire on the site.

 Bushfire attack comes in a number of forms: direct flame, radiant heat, embers, smoke and wind. Research
shows that over 80% of houses lost to bushfire in Australia can be attributed to ember attack, within 100m of
bushland.




Report compiled by Bushfire Risk Reducers for Kenlynn Pty Ltd, August 2016                Page 17