"Rogue Thunderstorms"

Hmm, what exactly do they mean (and by they I mean Darren Hellwege) by "rogue thunderstorms"? Unsanctioned by the government? Let's look at the words individually ...

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thun·der·storm Audio pronunciation of "thunderstorm" ( P ) Pronunciation Key (thndr-stôrm)
n.

A transient, sometimes violent storm of thunder and lightning, often accompanied by rain and sometimes hail.

Source: The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2000 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.

thunderstorm

n : a storm resulting from strong rising air currents; heavy rain or hail along with thunder and lightning [syn: electrical storm, electric storm]

Source: WordNet ® 2.0, © 2003 Princeton University
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[D&D and online game references removed]
rogue Audio pronunciation of "rogue" ( P ) Pronunciation Key (rg)
n.

1. An unprincipled, deceitful, and unreliable person; a scoundrel or rascal.
2. One who is playfully mischievous; a scamp.
3. A wandering beggar; a vagrant.
4. A vicious and solitary animal, especially an elephant that has separated itself from its herd.
5. An organism, especially a plant, that shows an undesirable variation from a standard.

adj.

1. Vicious and solitary. Used of an animal, especially an elephant.
2. Large, destructive, and anomalous or unpredictable: a rogue wave; a rogue tornado.
3. Operating outside normal or desirable controls: “How could a single rogue trader bring down an otherwise profitable and well-regarded institution?” (Saul Hansell).

v. rogued, rogu·ing, rogues
v. tr.

1. To defraud.
2. To remove (diseased or abnormal specimens) from a group of plants of the same variety.

v. intr.

To remove diseased or abnormal plants.

[Origin unknown.]
Source: The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2000 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.

rogue

n : a deceitful and unreliable scoundrel [syn: knave, rascal, rapscallion, scalawag, scallywag, varlet]

Source: WordNet ® 2.0, © 2003 Princeton University
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Well, discounting plant and human definitions it seems to be either a deceitful storm or a large/destructive and unpredictable storm. Okay that one makes a bit more sense, a large, destructive, unpredictable thunderstorm.

But today the phrase he used for the storm we might have is "popup". Let's see what that one might mean.
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pop-up (ppp)
adj.

1. Emerging quickly from a recessed or concealed position when activated: pop-up gun emplacements.
2. Rising to form a three-dimensional structure when a page is opened: pop-up illustrations in a children's book.

n.

1. A device or illustration that pops up.
2. Baseball. See pop fly.

Source: The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2000 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Discounting baseball and book references it seems to mean it's emerging quickly from a concealed position. Now where the hell do you hide something as large as a thunderstorm? That one seems to be a bit far-fetched.

(definitions provided by dictionary.com)