From PB
JB
"While phasing and a huge storm is on the table, what is also on the table is a lesser phased system meteorologically but still a large storm..one with a distinct area of high ratio snow, The northern feature may never link up with the southern feature, or simply lead it, But a healthy pressure fall center coming southeast and then east through the Ohio Valley with a Banana shaped arctic high over it, means enough convergence to produce a healthy swath of snow with old school upward motion/5k temp 20 to 30 to 1 ideas getting involved. Naturally, where you can intersect the two, phase the trough, have the big high, and deepen a storm with -8 around, you can produce a punishing storm, That is what the GFS is trying to do. I said on the Avenger this morning I liked where the positive was in southern Canada for the mid-Atlantic into the northeast for this. I would like the MJO to hold in phase 8 an extra day or two
The Euro looks rather strange to me, though trending stronger, because what is on its tail off the west coast should kick more energy out in the southern branch quicker and argues for the phasing, My usual correction to the euro is to kick that out, my usual correction to the GFS is to take storms north, Since the GFS is already north,
This storm is a bit like the 2003 storm in that there was not a strong negative with that storm, There was alot of high pressure around, and the upper heights were not that low, but the gradient was there. Sudden shortening can produce that, The gradient between a 980 mb low and 1020 high is the same as one between a 1000 mb and 1040.
My point is if you look at the heights, the trough is not that strong with 552 heights
The euros dragging of energy is going to cause it problems so at this time while I can't discount it, partly because of the MJO considerations, it looks very strange to me
I see this map with what is behind this, and I think this should march out on its merry way like the GFS, with enough northern branch feeding in to produce the storm
This ( GFS ) looks better
Like I said with the kicker behind it, why should it stop bringing the whole trough out.. But keeping it behind and feeding out pieces it destroys the major storm idea. I think the answer is in between
My take is that the Euro is too weak, the GFS is better, but the MJO collapsing or heading into 1 complicates the matter for me. So from now I think a lesser idea than the GFS, but stronger than the euro is where I am
The best idea may be the GEFS ensemble
we can enhance the snow when we settle on the -8C isotherm"