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Thanksgiving week transient cold shot and the pattern beyond


ORH_wxman

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I'm thinking a more amped up solution is more likely than strung out nothing. The NAO rising points to a somewhat signifcant storm in the east..more likely to be rain than snow, obviously. Also, we've seen a lot of cases where these shortwaves coming out of the southwest pack a big punch.

and we've had big qpf events regularly for the last 3-4 months

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Be able to roast the turkey out on the sidewalk after the storm on weds..

Not per the Euro. You'd be lucky to get past 42 or so and me maybe 48-50.

Thicknesses on both GFS/Euro for the post storm "torch" are pretty low vs expected with those H5 heights arguing for above normal but not absurdly so.

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Not per the Euro. You'd be lucky to get past 42 or so and me maybe 48-50.

Thicknesses on both GFS/Euro for the post storm "torch" are pretty low vs expected with those H5 heights arguing for above normal but not absurdly so.

Yeah, Still on the + side though, Not what we really want to see heading into Dec but it is what it is with this pattern

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arrowheadsmiley.png

Lets not get overly dramatic now.

12z EURO looks pretty similar to the 00z run. Hopefully the mountains of NNE can pull off a solid accumulating snow. Maybe they'll be able to open for at least part of the holiday weekend.

Nothing to get dramatic about, lol, Its still a ways out there so it will change plenty more times between now and weds, The higher elevations will stand the best chance of seeing snow out of this with backside snows maybe to the coast as the low departs, But that's verbatium this run

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Nothing to get dramatic about, lol, Its still a ways out there so it will change plenty more times between now and weds, The higher elevations will stand the best chance of seeing snow out of this with backside snows maybe to the coast as the low departs, But that's verbatium this run

Yeah...850s are awfully warm (on this run verbatim) too in far NNE. So it could be tough even there. I'm not too invested, seeing that it is 11/17 right now. Later in the run, the Midwest really starts to torch though, even into parts of Manitoba/Alberta. It looks like a springtime pattern right there. 60's all the way into Nebraska.

I think it gets worse before it gets better.

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There was a winter in the late 1980s/early 1990s that was an absolute brutal torch up until mid-December. I think we hit 70s in Lowell.

Was that '92 and Tips famous diatribe?

I believe December '98 had temps in the 70s too. I was in third grade, if memory serves me correct.

EDIT: Yes. Record high temp for December is 76 degrees set in 1998.

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Yeah...850s are awfully warm (on this run verbatim) too in far NNE. So it could be tough even there. I'm not too invested, seeing that it is 11/17 right now. Later in the run, the Midwest really starts to torch though, even into parts of Manitoba/Alberta. It looks like a springtime pattern right there. 60's all the way into Nebraska.

I think it gets worse before it gets better.

It does, We are going to need to build the cold back into canada going forward if we can get this pattern to flip towards mid december

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True, But the cold air is pretty marginal right now

What makes this interesting, to me at least is there is cold air present, it's just not over us...it's not too far away though.

All we really need is a phase just early enough and a trough deepening just soon enough to where the storm does not really ride the cost but stays just far enough off-shore to allow the cold air to dump in...obviously I think even at this stage we can say coastal areas won't see much snow, if any but inland...it's definitely possible.

Considering this all may be dependent on the phasing and how the trough develops I don't think anything should be ruled out...those details often aren't really known until you're inside of 72 hours...possibly even less.

Considering we aren't seeing any models really with inside runners I think that's a major positive at this point.

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What makes this interesting, to me at least is there is cold air present, it's just not over us...it's not too far away though.

All we really need is a phase just early enough and a trough deepening just soon enough to where the storm does not really ride the cost but stays just far enough off-shore to allow the cold air to dump in...obviously I think even at this stage we can say coastal areas won't see much snow, if any but inland...it's definitely possible.

Considering this all may be dependent on the phasing and how the trough develops I don't think anything should be ruled out...those details often aren't really known until you're inside of 72 hours...possibly even less.

Considering we aren't seeing any models really with inside runners I think that's a major positive at this point.

Thats true, But we also have no blocking mechanisim either which still gives this a chance to be further north if it phases to early..

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Thats true, But we also have no blocking mechanisim either which still gives this a chance to be further north if it phases to early..

Certainly agree on that but there aren't really any indications that this will phase too early.

Blocking is kind of overrated I think...it's great to have but it's not necessarily needed.

At this stage I honestly don't care how the thermal profiles are being depicted.

I look at it like this...

We have the cold air source to our north, there are two areas of high pressure being modeled...one to our NW one to our NE...the system look to pass just SE of SNE

going by that I see opportunity for a cold solution and a solution for snow. If we were seeing a track through New England then I would not be thinking this.

At this stage, being this far out I'll just look at the overall setup and not pay attention to the mesoscale factors and temps...those will change every run.

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