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Oct 31- Nov 2nd Storm Disco


Damage In Tolland

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Went from qpf worries to temp worries one run

That was the crazy run lol. That's warning criteria snow mountains of NNE from VT to ME. I wish I didn't see that haha.

Textbook 12 hour upslope period with a stacked low near CAR and 40-60kt 850mb winds slamming the picnic tables. Pittsburg NH would be the jackpot in that solution getting both good Synoptic lift and ramming home the upslope on the backside.

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You almost wonder with all the 12z models today if we're moving away from the idea of 2 separate lows and models are converging on low # 1 being the only deal..or just 1 low instead of 2. WTF

That main vort coming through on Sunday should eventually be the dominant player.

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Seems prudent to wait for the full 0z suite before putting too much stock in the 18z GFS.  Fine details in the 500mb evolution and how pockets of vorticity rotate around the ULL will make a huge difference here.  The GFS wraps the upper level flow around to easterly into SNE whereas the NAM retains mostly a westerly component.  It could almost come down to a nowcast situation and waiting to see if and where persistent bands of precip develop over SNE on Sat.

 

The GFS probably whitens the upper elevations of the Berks pretty solidly late Sat.

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Kevin, maybe some flakes at the end as the energy swings through Saturday night. It would be nice for the second low to go to town to our south. This whole thing is just weird.

 

The whole thing is suspect from the Carolina's all the way up to D.E.M. and points E to about the 70th longitude...

 

That much surreal power in mid level jet mechanics will induce upper envelope Q-vector forcing, and together with mid level cold working over the Gulf Stream ... anyone sane has to wonder if that much instability is well handled.  Something special should really explode there and do it with exceptional rapidity to put it lightly.  Faster and feed back faster than even the higher res Euro has been showing at that.  That's what it looks like to me.  

 

Then I see the 18z GFS at least try to acknowledge this stuff.. but it is another ensemble afterthought, so taken for whatever lesser worth. It may also be that Canadian shield impulse is getting into a denser sampling net, too 

 

In any event... I don't think this was ever a very solid looking snow event S. of about 45N for anyone.  The impetus for me all along was the storm genesis and using early signaling and that much was fine.  As to impact in general ... I think that it will be too warm for much snow SE of a KHPN - KMHT line (or so); but who knows... So much dynamical forcing and some pretty cold air at 700mb may punch threw..   Yes a few runs over the last span of days had occasionally depicted better cold ... But I'm of the school where if I get s flurry and some grains out of the deal, with the aroma of wood smoke in the air, that's a wonderfully sentiment vibe when knowing we got ALL of Novy through Feb in route.   

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18z giveth and 00z probably taketh.

Oh I wouldn't trust this at all...it's further west than even the furthest west ECMWF ensemble member from 12z. Literally and figuratively out in left field.

I'm not going to be home this weekend so part of me is happy that it's an outlier. Would hate to miss that type of event haha.

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that would suggest you favor a correction westward a la GFS?

I'm not going there...lol. I didn't think 2 would really blow up until it got east of CAR/NB/NS.

 

I think the GFS is off its rocker, but we'll see what the GEFS and 00z models do. I mean, can you ever really trust the GFS when it's alone and spews out a solution like this?

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