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Move out Tip, Get Lost Wilma, here comes No-Name!

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Ah, but the Great Red Spot is anticyclonic - so is it really a hurricane?
 
Actually this is a relative dead zone of wind compared to the Equatoral wind belts of Saturn. I know some news people have been talking about how it looks a human eye.

Even accounting for the difference in size between Jupiter and Saturn this thing is much smaller than the Great Red Spot. It's not even as large as the Dark Spot of Neptune which could hold the Earth.

Now that just live Uranus, lying on it's side with a relatively dull atmosphere.
 
Red doesn't count as a 'cane.

Though Jupiter's Great Red Spot storm moves counter-clockwise, and is far bigger than the storm on Saturn, it does not have the eye and eye-wall that mark out a hurricane.
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Plus, Reddy is a HIGH pressure area, as Zhen pointed out - so it's actually the theoretical opposite number of a hurricane, the anticyclonic storm (hurricanes being cyclonic storms, centered on low-pressure areas)

Even if it did count, it still doesn't have either eye or eyewall, which Saturn's little twerp does.

(The counter-clockwise observation on Reddy, btw, is irrelevant. Reddy is a south-hemisphere storm, which for a earthly hurricane would mean clockwise rotation. It's anti-cyclones that go counter-clockwise in the southern hemisphere, on Earth.)

The Great Dark Spot (henceforth, Darky), might or might not be a storm ; the Neptune article on Wiki says it is a hurricane, where the Great Dark Spot one talks about an atmospheric hole (similar to Jupiter's own GDS - which actually dwarfs even Reddy, but is an ephemeral phenomenon) ; further googling has given me hits that talk about it being an atmospheric holes, hits that simply say "hurricane" without further qualification (but then, the same can be found for Reddy).

That said, those sites that did go into detail all had one thing in common - counterclockwise rotation. Darky, if it is indeed a storm as seems to be the prevailing explanation, is likely an anticyclone just like Reddy, and thus not a valid hurricane.
 
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Another hypothesis on the Great Dark Spot is that it is a sort of atmospheric hole. How an atmospheric hole can survive I don't know - perhaps that's why it vanished. An even greater mystery is how a hole can form - the Great Dark Spot reappeared on Neptune in another place after vanishing.
 
A hurricane is affectively a hole in the atomsphere when you look at the isobars horizontally. It's just Earth's atmosphere is too thin to make anthing as dramatic as the spots.
 
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