What are these Jet Stream Loops?

I have never seen these before. Are they normal?






here is the link to the Jet Stream Position page. But the loops will be off of it in just a few days.
Jet Stream Position

They make more sense when one sees them in motion.

squall.sfsu.edu...

At the site above I usually set it to 20 days
and then click "build animation"


David Grouchy

Originally posted by davidgrouchy
They make more sense when one sees them in motion.

squall.sfsu.edu...

At the site above I usually set it to 20 days
and then click "build animation"

David Grouchy

edit on 27-1-2011 by davidgrouchy because: sence < > sense

So you are saying that it is normal for those loops to happen?

Yes.


...errr, you just tricked me into a one line answer.
A violation of the ATS rules.

I guess I should elaborate.



It's like topography, or elevation lines showing the altitude of a mountain.
But sence the stream is more like a river, it tends to be in a line.
In the case of these isolated loops it's similar, by analogy,
to a loop of the Mississippi that is cut off and
becomes a lake.


David Grouchy