Multpile Vortex 'Stage' In Tornadoes???

Joined
Mar 3, 2007
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Bangor, Northern Ireland, UK
Good Evening Gentlemen :)

I have been pondering something over for the past few year, but more so over the past few months about the possibility, that most tornadoes, at some point in their ealry life cycle, has a stage, where it is multi-vortex, but sometimes it's barely noticable, as it can sometimes be when a tornado is barely on the ground, and other times, (As we all know) a beastly wedge, with a huge appetite.

I remember I had once sent an e-mail to Howard Bluestein, it was about 5/6 years ago now, and I has asked his thoughts on multiple vortices in general, and he had indicated that it mostly depends on the level of swirl ratio in the tornado's rotation, but at the same time, I couldn't help, but notice that many video clips I have seen from various tornadoes, including those that were just beginning to touch down and others that were of various structures and strengths, and I've become increasingly open minded to the possibility, that at some point, early in a tornado's life cycle, it has a phase where there are suction vortices rotating around the main circulation itself, but these can be quite small and easily un-notieced, unless zoomed in on the base of the tornado, whilst videoing :)

Now, in saying this, I haven't seen footage of every tornado, but from the many various clips thatI have seen, about 70% of those tornadoes did have a period of time, where there were suction vortices present, but I feel that the the phase is variable from 1 tornado to another, whereas, in some of the tornadoes, the suction vortices has gone, after a tornado had fully touched down, to it's natural potential, and other times, well, we all know what the long lived suction vortex stage usually means, but is not always that result :)

And so, with all this in mind, I thought that I would ask you guys for your thoughts on this, do you guys think that it's possibililty of there being a multi vortex phase stage in a tornado's life cycle, (However long or short lived) or do you feel that it's something that would need to be properly researched that bit further to be sure? :)

I very much welcome all views on this and I'm keeping an entirely open mind on the possibility of there being a multi-vortex phase or not, because I feel that the percentage of tornadoes that would have thise, would be in around 70% of the total number of tornado touchdowns, maybe not enough for it to be warranted as a "Phase", but it has certainly got me intrigued :)

Willie
 
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I really don't know a whole lot about what causes multi-vortex tornadoes and I am certainly not even close to being qualified to answer this question, but I would be very surprised if all tornadoes went through that phase. Somebody correct me if I'm wrong, but the swirl ratio is tangential to radial velocity (fancy wording for rotation to inflow ratio) and I would have a hard time believing that there were any sort of consistency in this ratio between one tornado and the next.
 
Perhaps there is some kind of weak multi-vortex phase 1st as the tornado is "winding up"? Some videos show dirt whirls moving around under the meso, sometimes a few mins before a tube appears. Seems like rolls of vorcitity could be being concentrated as the width of rotation slowly contracts.
 
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