Launching
this blog last Saturday 8 February evening I mentioned the following day, Sunday 9
February being "heralded as a bushfire shocker
scenario".
How right those prophets of doom were and here is one family who were clearly
shocked, commenting "you don't expect it to happen to you" in a story
in The Age last Tuesday.
In
the aftermath of 2009 bushfires and subsequent Royal Commission with its 67
recommendation, many have still not woken up to the fact that bushfire can
reach them in or on the edge of suburbia where they feel safe and secure in
their homes and have priorities other than bushfire.
Welcome
to Australia and the Australian bushfire, folks and it can reach you well
inside the town boundary, as people in the Canberra suburbs found out in January
2003 and in Marysville in 2009.
Referring
to the Mickleham fire, which was still burning days after it occurred, it was
glaringly obvious the fire caught out many who had no understanding of bushfire
— predominantly ‘grassfire’ for the purist and that distinction between a fire
in grassland and a forest fire is important, as fires in each vegetation
type are quite different.
With
Mickleham we had all the necessary ingredients last Sunday for a severe grassfire
event, lush paddocks after good pre-season rain, high temperature and low
relative humidity to drain the remaining moisture from the already dry grass
and the ‘killer punch’ strong wind, initially from the north then the southwest
and south after the cool change arrived. Killer punch because it's wind that
drives fire. At the height of summer a strong wind can at times drive a grassfire
fire faster than a fire truck can keep pace.
Significantly, there are two
recordings from the Bureau of Meteorology weather station at Melbourne Airport,
Tullamarine that reveal that the dreaded Code Red
had been entered on two occasions: FDI 100 at 11:00 hrs and FDI 120 at 12:00 hrs. The short extract from the Weatherzone publishing
of Met Bureau observations shows the varying FDIs.
Weather
recorded at the BOM Station at Kilmore Gap, which is close to the eastern side
of the Mickleham fire, has FDI 109 at 11:04 hrs and FDI 116 at 13:00 hrs.
How
people should prepare for a fluctuating FDI and respond to the CFA’s fire
danger ratings presents a challenge that I will endeavour to advise on later,
but at this stage it’s reasonable to contend that the statement for Code Red
that “homes are not designed or constructed to withstand
fires in these conditions” needs clarification — as a blanket one-size-fits-all
statement it’s INCORRECT hence potentially dangerously misleading.
In
my next posting I will go into a little more detail on what to expect of a grassfire and how to reduce its impact.
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