Posted by Steviegtr on 13/01/2020 16:50:55:
Do the houses catch fire easily. As I believe most are constructed from wood. ???
Not really the problem, it's the sheer scale and ferocity of this type of wild-fire that matters. Imagine an area bigger than the whole of the UK has suffered a series of bad droughts over the last twenty years and this year is the worst so far. It's midsummer, about 40C, all vegetation and buildings are tinder dry, and there's a steady breeze. Then fires start; whether accident, nature or deliberate there are likely to be hundreds of them, with a serious risk they will spread rather than burn out naturally.
Initially the flame front travels at wind speed. This is risky because pedestrians may not be able to outrun it, especially the unfit retired gentlemen who favour this forum. But it can get much worse: really big fires like those in Australia cause an up-draft that accelerates the flame front faster than wind-speed. Now the fire might catch a car speeding away at 70mph. The radiant heat is enough to ignite anything inflammable several metres away and it sprays a shower of burning embers capable of travelling long distances, starting more fires well in front of the main one. Not to be compared with a giant out-of-control bonfire next door, these are genuine infernos, possibly with flame fronts several kilometres long.
Very difficult to control. Best tactic is to run away, abandoning home and property to fate. Even a concrete bunker won't save you from a really big fire.
About as bad as it gets – an unimaginably nasty experience. Ironic if the droughts are in any way related to Australia exporting a Billion tons of coal a year to China.
Dave