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January 26-27 Storm Threat


Baroclinic Zone

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Not major, but I can't say I like the look of the s/w digging further SW into TX.

I agree with everything you've said, the NAM is hideous for most of us at first bluff....but the pivot point is in PA and the warm air would get shut off similar to some other solutions...but not before it made it probably into our northern states. 850mb winds from Green Bay to Nova Scotia are SW to SSE....not usually a great premise for a big snow in SNE.

Thankfully it's the NAM.

My comments about 5h are through 48h...beyond that...

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Guess DTs stress is relieved

ABOUT THE 0Z NAM -- model discussion NOT forecast: yes the 0z NAM is overdone... and YES it is way inland... and yes past 60 hrs the NAM is crap... BUT the NAM is NOT by itself here. Its does have the 12z Canadian & Ukmet with it and the previous runs of the Euro. MOREOVER the overall pattern over N America DOES support an inland track - just NOT to the extreme of the 0z NAM...

I guess he has a point, but why does DT have a caps lock fetish for the words "does" and "not"?

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I guess he has a point, but why does DT have a caps lock fetish for the words "does" and "not"?

He's irritated, for some reason he has a big investment in this one. Classic DT. Like I said I like the guy, and I think he has a lot of great ideas but he has a hard time separating out the wheat from the chaff at times.

--

I kind of feel like we're going to see an extreme solution (for this winter) with this low...one that goes either west up into the region or a true BM type low. IMO, the NAM is heading NE, I actually think it ends up under us by a fair margin...but that's just me...IE towards the BM.

--

GFS solution would appear to be heading towards the faster side through h42.

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He's irritated, for some reason he has a big investment in this one. Classic DT. Like I said I like the guy, and I think he has a lot of great ideas but he has a hard time separating out the wheat from the chaff at times.

--

I kind of feel like we're going to see an extreme solution (for this winter) with this low...one that goes either west up into the region or a true BM type low. IMO, the NAM is heading NE, I actually think it ends up under us by a fair margin...but that's just me...IE towards the BM.

I agree and you can see it on the last few panels....

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You are going against a consensus of about 100 super computer runs, good luck

I'm perfectly prepared to change my thoughts.

But as it is, the few maps you posted do nothing to prove anything I said otherwise. All you posted was sea level pressure and ensemble mean QPF in which there is zero indication of what falls as rain or snow. And all the ensemble QPF says is "yes, we're working with a juicy system", and nothing more.

You're going to have to do better than that.

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Re: Greenland, temps remain cold because pressures are high at the surface too. This means that the thicknesses between pressure levels is smaller.

In this case, we have high heights with low pressure approaching at the surface, yielding greater thicknesses. As Taunton pointed out, this is not like past storms where snow is falling over I95 even with a track over the Cape.

This is a much more compact system, with a very very small half wavelength. Therefore, it can afford to not be as deep and have higher heights and still be quite potent. And this is what we see: a regime with much greater heights than we saw with the other storms. Boxing Day, with a similar track, was associated with a massive bomb at 500mb.

There could definitely be a stripe of sleet / freezing rain, but even considering the antecedent cold and snow pack ... we have high pressure bugging out and deep layer prolonged easterlies. That spells rain.

With such a case, a large region of higher QPF will be wasted as rain. Enhanced precip from the coastal front will be straddling rain/snow, making it major snow totals more difficult to come by. We'll likely see a secondary area of enhancement like Boxing Day, with signs pointing to pretty good deformation well northwest of the low. And this will fall as snow. But it will be a narrow zone.

So I'm pretty much looking at moderate accumulations with overrunning ahead of the storm for most, changing to rain east, with a narrow stripe of heavy snow west (not necessarily GC again, but not saying no).

That's probably a good position to take.lol This one going to be another solid hit Sam, at least that's where I'd put my money. Meanwhile, now at -8/-13 here at the house. Deep snow, sub-zero temps, and a boatload more Big Winter incoming, Big Big Winter,

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He's irritated, for some reason he has a big investment in this one. Classic DT. Like I said I like the guy, and I think he has a lot of great ideas but he has a hard time separating out the wheat from the chaff at times.

--

I kind of feel like we're going to see an extreme solution (for this winter) with this low...one that goes either west up into the region or a true BM type low. IMO, the NAM is heading NE, I actually think it ends up under us by a fair margin...but that's just me...IE towards the BM.

--

GFS solution would appear to be heading towards the faster side through h42.

My call will be an intense low riding 25-30 miles east of CC. We'll see.

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He's irritated, for some reason he has a big investment in this one. Classic DT. Like I said I like the guy, and I think he has a lot of great ideas but he has a hard time separating out the wheat from the chaff at times.

--

I kind of feel like we're going to see an extreme solution (for this winter) with this low...one that goes either west up into the region or a true BM type low. IMO, the NAM is heading NE, I actually think it ends up under us by a fair margin...but that's just me...IE towards the BM.

--

GFS solution would appear to be heading towards the faster side through h42.

It's not wheat and chaff. The guy simply doesn't play well. That's why he works out of a closet. No normal workspace would have him. Certainly a talented Met but :whistle:

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I'm perfectly prepared to change my thoughts.

But as it is, the few maps you posted do nothing to prove anything I said otherwise. All you posted was sea level pressure and ensemble mean QPF in which there is zero indication of what falls as rain or snow. And all the ensemble QPF says is "yes, we're working with a juicy system", and nothing more.

You're going to have to do better than that.

lol

COT is trying to will this into a no-brainer snow storm. like the Box afd said ....we need this to go by the benchmark ...i.e offshore for this to be a snow deal here.

gotta like 0z gfs....it threads the needle but continues the trend of low qpf on the cold side.

nam has 0c line over Southern ct.....s central ri and se mass by 12z wednesday ahead of the precip.

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Ukie is west.. not sure exactly where but it's more amped than the GFS by 72 with more ridging ahead.

I am pretty sure this will be rain along the coast. There's not much blocking and this is a powerful s/w. The ensemble means are pretty far west with a lot of them (something like half) turning to rain on the coast.

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