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NYC Jan 11-12 Miller B Thread Part 2


am19psu

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Most of the globals including the GGEM/GFS totally dun goofed in the short-term with the boxing day blizzard. Even the Euro did not correctly predict that the best dynamics/qpf would be in NJ. The Hi-Res models did very well, so I would give them extra weight in this situation,

NJ Total Forecast:

TTN: 5"

SMQ: 6"

MMU: 7.5"

EWR: 9"

SANDY HK: 10"

TEB: 11"

JRSY CITY: 11"

NYC: 11"

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It has been in the past, no reason to doubt it now. Its just killer under 30 hours and lines up well with the other Hi Res'

Yeah, the fact that the hi-res models are shifting west seems to be an indicator that they are seeing more dynamics as the storm gets closer. It looks like the Global Models are too far east compared to what we're seeing now.

I think in this case, it's actually better to see the hi-res models shift west than the globals. Had the hi-res models shifted east, that could be an indicator that the dynamics--which they are supposed to pick up on--are less than previously indicated. Since they are west, I'm content.

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The Philly thread is going into suicide mode. They were never modeled to hit the big time with this one and are attacking anyone that mentions how well the NYC area is going to fare when some of the Mt. Holly zones are located that far NE.

again, its the reason im over here, it gets on my nerves, they will still see snow, just be happy with that. We were never progged to get anying more than 8 inches in the mt holly cwa, except up by middlesex co.

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Yeah, the fact that the hi-res models are shifting west seems to be an indicator that they are seeing more dynamics as the storm gets closer. It looks like the Global Models are too far east compared to what we're seeing now.

I think in this case, it's actually better to see the hi-res models shift west than the globals. Had the hi-res models shifted east, that could be an indicator that the dynamics--which they are supposed to pick up on--are less than previously indicated. Since they are west, I'm content.

Go with the hot hand. Hi Res ARW and NMM did fantastic in the last storm, as did the MM5. Euro was too east with the best banding.

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Im not trying to be a downer here but dont the MM5, ARW and NMM all get their data from 12z NAM sheme?

I believe they do.

Not saying they are wrong because of that but it could be skewing all of them.

Curious to see if 18z NAM will hold its big totals.

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Im not trying to be a downer here but dont the MM5, ARW and NMM all get their data from 12z NAM sheme?

I believe they do.

Not saying they are wrong because of that but it could be skewing all of them.

Curious to see if 18z NAM will hold its big totals.

I swore the mm5 was it's own model

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posted in SNE thread but still holds some keys to how areas just west do

i think a blend of 15z sref+euro+meso modeling will be answer key this afternoon. still supports widespread 10-20 with locally 24 possible. All we are really figuring out is exactly when and where the mid level circ closes off over the coastal in order to create the anomalous U wind jet and setup deformation band. Sooner it does it, more western track, and more moisture on anomalous -U wind throws heavier precip farther west..later...its a bit east. All just details at this point for exactly where the centroid of max snow is. I still always shade northwest of 700mb low track as my best area, which is typically also northwest of qpf max in model world.

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In all fairness, its not just the Philly area that commits suicide when things don't go their way. We all do in one way or another. The real cryers should be the DC area which have had miss after miss so far this year. Last year was a two or three time a century winter for them and this year is just typical.

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GFS and Euro basically same QPF for NYC, around .50 - .60

to me this is a bad sign...i know i have heard from mets that the mesoscale models are the way to go but we know that isnt true...no one ever quotes the ARW/NMM or even the MM5...nothing wrong with a 5-8" snowfall....east of Nassau cty can see 12"

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to me this is a bad sign...i know i have heard from mets that the mesoscale models are the way to go but we know that isnt true...no one ever quotes the ARW/NMM or even the MM5...nothing wrong with a 5-8" snowfall....east of Nassau cty can see 12"

Nothing is set in stone just yet. Euro does not show .50-.75 for the area.

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The problem with NYC getting big snow totals is the track of the H5 low, ideally we would want the H5 to pass south of us, like the 6z NAM was showing, however the latest runs are showing the H5 low basically tracking on top of us, which won't allow heavy precipitation to really "hook" and and wrap around to give NYC 12+. SNE looks to be the sweet-spot with this storm.

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