Amazing Photo of Hurricane Isaac Is Fake
Meteorologists say this image is Photoshopped.
CREDIT: Origin unknown
If, sometime in the past few days, you saw a photo alleging to show Hurricane Isaac barreling over ominously still waters as it approached the Gulf Coast, scrub the image from your memory: the photo is fake.
"It is a Photoshopped picture of a supercell thunderstorm that seems to pop up with a new foreground every time there is a hurricane threat anywhere," Bay News 9 meteorologist Josh Linker said.
"I've seen versions of that photo since at least 2005," added Brian McClure, also a meteorologist at the Tampa Bay-based news station.
The current incarnation of the picture claiming to show Isaac was posted to Twitter several days ago, retweeted thousands of times, and even used by some media outlets to accompany its coverage of the storm before the hoax came to light.
Similar fakery occurred last August during Hurricane Irene, when another photo of a supercell thunderstorm, superimposed on a picture of a Florida beach, got retweeted hundreds of thousands of times on Twitter. Likewise, in 2005, supercell storm pictures circulated as alleged shots of Hurricane Katrina making landfall.
Clearly, everyone likes the look of supercells. According to Chris Walcek, a meteorologist at the State University of New York, Albany, these impressive thunderclouds form in the Great Plains when a pocket of hot, vapor-filled air starts to rise in the presence of just the right amount of "wind shear," or change in wind speed with height. The huge air pocket starts to rotate, and the Coreolis force generated by the spin of the Earth enhances the air pocket's rotation.
"[T]he condensation pattern at cloud base forms a 'belt' or 'wall' appearance as air is lifted and sucked into the swirling storm," Walcek told Life's Little Mysteries back in May, when a spectacular supercell was photographed in Texas.
By comparison, tropical storms and hurricanes are much less tightly packed and thus appear less beautifully structured in photographs — at least those taken at ground level. It takes a satellite to capture the terrifying magnificence of a churning hurricane.
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