…But Does a Fire Tornado in Australia Spin the Other Way?


This story was originally published by Slate and is reproduced here as part of the Climate Desk collaboration.

Last weekend I posted a video taken not too far from where I live showing a “fire tornado”—really a spinning vortex of rising air drawing its power from fire on the ground. It was pretty dramatic, mostly due to hundreds of tumbleweeds swirling around it, drawn in by the rotating column of wind.

After posting it, I got a note from Chris Tangey, who specializes in photography in Australia’s Outback. He took some footage of a fire tornado in 2012 (watch above) that he claimed was better than what I posted…and he’s right.

fire_tornado

Yegads. The speed and power of such a vortex depends on how quickly the air in the middle can rise, which in turn draws in air from farther out; as that air spins and falls in the rotation speeds up, tightening the vortex and magnifying it. As you can see in the fire, spurts of flame leap up the inside of the vortex, clearly giving it more strength. The sound and speed of it are enthralling.

I had never heard of this phenomenon until a year or so ago. But now there are cameras everywhere…and, sadly, with global warming likely increasing both the number and severity of wildfires, we’re bound to see lots more footage like this.

Note: The title of this post is a joke; in general the Coriolis force only acts on far larger scales, so I would think a vortex like this (such as a dust devil) is just as likely to spin clockwise as counterclockwise. It would be interesting to see some statistic on this, though!

More MotherJones reporting on Climate Desk

FACT:

Mother Jones was founded as a nonprofit in 1976 because we knew corporations and the wealthy wouldn't fund the type of hard-hitting journalism we set out to do.

Today, reader support makes up about two-thirds of our budget, allows us to dig deep on stories that matter, and lets us keep our reporting free for everyone. If you value what you get from Mother Jones, please join us with a tax-deductible donation today so we can keep on doing the type of journalism 2019 demands.

We Recommend

Latest

Sign up for our newsletters

Subscribe and we'll send Mother Jones straight to your inbox.

Get our award-winning magazine

Save big on a full year of investigations, ideas, and insights.

Subscribe

Support our journalism

Help Mother Jones' reporters dig deep with a tax-deductible donation.

Donate

We have a new comment system! We are now using Coral, from Vox Media, for comments on all new articles. We'd love your feedback.