drhoz:

And, famously, most of the Australian countryside is made of explodium.

The eucalypts that feature so prominently are practically dripping with highly flammable oils. There’s even a myth that koalas will explode if they get too close to campfires. The trees certainly will.

 In fact, as an approaching bushfire bakes the forest in front of it, you can get a horribly volatile mix of eucalyptus oils and oxygen. Then it can all go up at once.

The Australian bush is so flammable that hundreds of plant species have evolved methods of surviving the conflagration. Indeed, many of them require a fire to germinate their seeds.

Oddly enough, despite living in a tinderbox, bushfires have only killed about 800 people in the history of the nation. Unhappily, 179 of those were during the 2009 Victorian Bushfires.

But if our bushfires aren’t enough for you, feel free to combine them with the tornadoes.