That’s Not a Fire Tornado. THIS Is a Fire Tornado.

The entire universe in blog form
April 4 2014 7:45 AM

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

fire tornado
Dorothy would've had a much more difficult time with this one.

Photo by Chris Tangey, from the video

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 that he claimed was better than what I posted … and he’s right.

Advertisement

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.

fire tornado
This wider view really shows how tightly focused this vortex was.

Photo by Chris Tangey, from the video

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!

Phil Plait writes Slate’s Bad Astronomy blog and is an astronomer, public speaker, science evangelizer, and author of Death From the Skies!  

TODAY IN SLATE

Politics

Talking White

Black people’s disdain for “proper English” and academic achievement is a myth.

Alabama’s Insane New Abortion Law Gives Fetuses Lawyers and Puts Teenage Girls on Trial

Tattoo Parlors Have Become a Great Investment

Natasha Lyonne Is Coming to the Live Culture Gabfest. Are You?

A Jaw-Dropping Political Ad Aimed at Young Women, Apparently

The XX Factor
Oct. 1 2014 4:05 PM Today in GOP Outreach to Women: You Broads Like Wedding Dresses, Right?
Crime

Operation Backbone

How White Boy Rick, a legendary Detroit cocaine dealer, helped the FBI uncover brazen police corruption.

Music

How Even an Old Hipster Can Age Gracefully

On their new albums, Leonard Cohen, Robert Plant, and Loudon Wainwright III show three ways.

The Secret Service’s Big Problems Were Reported Last Year. Nobody Cared.

Hong Kong’s Protesters Are Ridiculously Polite. That’s What Scares Beijing So Much.

  News & Politics
Politics
Oct. 2 2014 11:01 AM It Wasn’t a Secret A 2013 inspector general report detailed all of the Secret Service’s problems. Nobody cared.
  Business
Moneybox
Oct. 2 2014 12:10 PM Women of America, Here Are the Cities Where You Can Find Marriageable Men
  Life
The Vault
Oct. 2 2014 11:07 AM Mapping 1890 Manhattan's Crazy-Quilt of Immigrant Neighborhoods
  Double X
Doublex
Oct. 2 2014 11:34 AM Alabama’s Insane New Abortion Law Putting teenage girls on trial may finally be too much for the Supreme Court.
  Slate Plus
Behind the Scenes
Oct. 1 2014 3:24 PM Revelry (and Business) at Mohonk Photos and highlights from Slate’s annual retreat.
  Arts
Brow Beat
Oct. 2 2014 12:04 PM The Audio Book Club Debates Gone Girl, the Novel
  Technology
Future Tense
Oct. 2 2014 11:41 AM Dropbox Recruiting Video Features Puppets and Data Privacy
  Health & Science
Medical Examiner
Oct. 2 2014 9:49 AM In Medicine We Trust Should we worry that so many of the doctors treating Ebola in Africa are missionaries?
  Sports
Sports Nut
Oct. 1 2014 5:19 PM Bunt-a-Palooza! How bad was the Kansas City Royals’ bunt-all-the-time strategy in the American League wild-card game?