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A supercell thunderstorm is characterized by a sustained and powerful rotating updraft. These storms originate in unstable air accompanied by a particular type of changing wind direction at various altitudes in the atmosphere; a common combination supportive of supercells is a southerly or southeasterly wind near ground level and a southwesterly or westerly wind higher up in the atmosphere.

This combination of changing wind directions creates a horizontal rolling motion in the lower atmosphere. The same rapidly rising air motions that form the thunderstorm turn this horizontal rotation into a vertical rotation, and in the case of this particular storm, this rotation is spectacularly evident in the circular striations, or layers, visible in the cloud structure.

The structure of supercell thunderstorms allows rain and hail to fall well away from the source of the warm, unstable air fueling the storm, so these storms do not choke on their own rain-cooled air. In some cases this allows supercell thunderstorms to stay intact for hours, covering tens or even hundreds of miles. In the process they can produce giant hail, very high winds, and tornadoes.

This week, most of Georgia was a panic after receiving barely an inch like 30 feet of snow. Many cars wound up in ditches on the side of the road, including some pretty heavy duty haulers. One driver of a Dodge Challenger was unfazed though, as he sped bravely through two semi-trucks careening off the road. If any major Hollywood studio out there needs a stunt driver, you know who to call...

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By Unknown
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On Tuesday evening, the Weather Channel's Jim Cantore was in the middle of conducting a report at South Carolina's College of Charleston when, all of a sudden, a videobomber came out of nowhere.

Like a pro, Cantore knees the guy in the crotch and continues with the report.

I hope that guy is still in the fetal position right out of frame.

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