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12/29 - New Years Storm Threat Discussion


Dsnowx53

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lol..well that would be a first..storm going to the se by 150 miles with the 850 line south in late December and it's rain on long island..this winter that is quite possible

Disagree strongly.

The beaches have issues, not just inland.

And once the heavier precip moves in, it flips to snow.

Read Upton's disco.

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lol..well that would be a first..storm going to the se by 150 miles with the 850 line south in late December and it's rain on long island..this winter that is quite possible

A lot of times the QPF algorithms aren't worth the paper they're drawn on in these situations. Rely on soundings instead. I can sort of see a primary feature over the Ohio Valley which could cause some initial issues, but I have a hard time believing that much of the precip anywhere is rain (perhaps except for southern NJ if the 850 zero line crosses them) when the main storm gets going.

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yea. trending deff for a stronger snowfall but at the cost of a tighter precip gradient. so the coastal sections might reach low warning levels while the NW zones most likely remain advisory level snows.

Orange County is always the exception, they pull a 6 inch amount outta their ass in every storm.

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@ 36 hrs you see a 996 at the Benchmark , you see the GFS precip flow around that low

Now look at the 6z 42 hr same time and look at its interpretation of its precip field ,less organized .

So the depth of the Liquid is better on this run around its center , not quite to the NAM but not far off .

GFS precip too small for a 12 mb fall inside 12 hrs coming Northeast IMO

as it is it .50 city east . Nam .50 - .75 just think theres room to trend better

its been coming our way for 24 hrs now

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Currently at work and the interesting thing going on this morning is that the models have tremendously underestimated the jet dynamics over the OH Valley, we're getting tons of aircraft reporting turbulence in altitudes only some light chop was indicated, this could be a sign we've got heights pumping more ahead of the wave kicking out of the srn plains.

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Currently at work and the interesting thing going on this morning is that the models have tremendously underestimated the jet dynamics over the OH Valley, we're getting tons of aircraft reporting turbulence in altitudes only some light chop was indicated, this could be a sign we've got heights pumping more ahead of the wave kicking out of the srn plains.

Could mean that models are going to play catch up in the next 24 hours.

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Currently at work and the interesting thing going on this morning is that the models have tremendously underestimated the jet dynamics over the OH Valley, we're getting tons of aircraft reporting turbulence in altitudes only some light chop was indicated, this could be a sign we've got heights pumping more ahead of the wave kicking out of the srn plains.

Ton of southerly flow off the east coast , GFS will come west with the surface and precip field

very comfortable with a 6 inch call in a lot of spots

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The GFS printout shows about .25" at EWR and .3" at JFK. I don't see anything near a half inch.

@ 36 hrs you see a 996 at the Benchmark , you see the GFS precip flow around that low

Now look at the 6z 42 hr same time and look at its interpretation of its precip field ,less organized .

So the depth of the Liquid is better on this run around its center , not quite to the NAM but not far off .

GFS precip too small for a 12 mb fall inside 12 hrs coming Northeast IMO

as it is it .50 city east . Nam .50 - .75 just think theres room to trend better

its been coming our way for 24 hrs now

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The GFS printout shows about .25" at EWR and .3" at JFK. I don't see anything near a half inch.

Precip field doesnt match dynamics . Thought it read .50 - if it doesnt it should

and I thnk it comes west - as of know its on its own wit hthe weaker QPF

HARD TO ONLY GET .25 QPF with a system progged this way

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The GFS printout shows about .25" at EWR and .3" at JFK. I don't see anything near a half inch.

When you have the SREF's/NAM and GGEM all showing higher QPF totals than the GFS I wouldn't worry about it too much. The low takes a track slightly further offshore than the GGEM/NAM but it's in nearly the identical position that the 12z NAM was down on the VA/NC border. The initial wave also doesn't look quite as sharp or as negatively tilted as what the NAM shows which might not be pumping up the heights along the coast as much as what the other models are showing. Still not a bad run.

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Fair Warning the Euro may not show tons of QPF . So no one jump out of a window . It sometimes misses QPF close in .

The key to Euro is how much it deepens the LP and where the surface feature ends up-

The high RES should take it from there .

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