Busy at work just checking in, I thought the Euro was going move North. Still seems firm in a Southern solution but what got my attention is something I hardly see mentioned , at least in this case as to why the storm is staying South.
I mean I heard the about the NS vorts, the confluence, high pressure and the western ridge too but then I came across some sort of involvement with the SPV .
HM was mentioning the " The trough down 60W is part of the full vortex and all of its associated cyclones in the troposphere."
Seems that when you look at the SPV in 3D you can see this better.
This is the first time I read about this and the 3D look at the vortex really adds a nice visual depicting how it can be formed in odd shapes and changes in height, for example it can be whole at the upper levels and split like a pair of pants at the bottom.
You can see it better below in the animations or visit the thread as I don't want to post too many of these.
There is involvement here with the pattern and the storm and this is acting a untraditional block I think
I guess this sums it up here from HM , " Looking at the big picture, this isn't the most ideal way to slow down the "50-50 low" and suppress a coastal storm (North Atlantic blocking is the best recipe for that). However, you can visualize how this full structure would help to slow down the tropospheric-portion somewhat"
