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Jan 22-23 East Coast Storm Discussion


Wow

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I hear some people talk about the energy coming on shore in CA and being properly sampled at some point today.  Has that happened as of yet?, and would it make the models swing from their current trends?

 

I mean could more sampling make this an apps runner, or simple go up in smoke?  Would more sampling affect the track, or strength, or both??

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  On 1/19/2016 at 7:17 PM, The Alchemist said:

I hear some people talk about the energy coming on shore in CA and being properly sampled at some point today.  Has that happened as of yet?, and would it make the models swing from their current trends?

 

I mean could more sampling make this an apps runner, or simple go up in smoke???

i believe it came onshore early this morn.

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  On 1/19/2016 at 7:22 PM, superjames1992 said:

The 15z SREF is pretty far south.  It is kind of out of its range, though.

 

 

was just about to say that, not sure how much its worth but nice to see the south trends continue on the models as the sw came ashore this morning, resulting in better sampling for the models.  

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The Euro keeps trending farther south with the shortwave that rolls through the Great Lakes and into New England from hrs 15-39.  That in concert with the building west coast ridge forces our Pacific wave to dig well south.  The Great Lakes shortwave seems to be the key piece that has trended south (the Pacific wave is forced to track underneath the confluence in its wake).  If the flow was flat out ahead of our Pacific wave, it would lift north.

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  On 1/19/2016 at 7:07 PM, LovingGulfLows said:

Hmm, that seems to imply maybe Atlanta can get in on the comma head snows as low pressure begins to depart...wonder if the 850s have crashed by then.

 

  On 1/19/2016 at 7:06 PM, superjames1992 said:

I haven't seen that model before.  Looks like the French model?  Really interesting track as it transfers down towards the Gulf coast in the FL panhandle.  Wow.

 

http://meteocentre.com/models/explorateur.php?lang=fr&map=na&run=12&mod=arpege&stn=PNMPR&comp=1&run2=12&mod2=arpege&stn2=PNMPR&hh2=090&fixhh=1&stn2_type=prog&mode=latest&yyyy=latest&mm=latest&dd=latest&hh=078

 

The NAVGEM is also not far off (it came further south with the 12z run).  I think the JMA was similar, as well.

Yeah i'm curious to see how well it does in a wedge situation.  it implies a big ice storm for the upstate and even gets freezing temps into north ga before the main precip ends.

 

TT_TT_PN_078_0000.gifTT_TT_PN_084_0000.gif

TT_TT_PN_090_0000.gif

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  On 1/19/2016 at 7:07 PM, LovingGulfLows said:

Hmm, that seems to imply maybe Atlanta can get in on the comma head snows as low pressure begins to depart...wonder if the 850s have crashed by then.

850s go sub zero by 90 hours and would certainly indicate at least some back end snow

 

TT_GZ_UU_VV_090_0850.gifTT_GZ_UU_VV_096_0850.gif

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The GFS tries to look like euro at the beginning, but really has not WEDGE or Confluence into NE (EURO does, and been trending stronger)  I would favor the euro and its ensembles in this situation...why??  Better physics in the models, better handle on the energy imho...but maybe most importantly there is some good wedging and confluence in NE and a -NAO.  This could trend a bit further south...IMHO

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  On 1/19/2016 at 7:43 PM, Lookout said:

Yeah i'm curious to see how well it does in a wedge situation.  it implies a big ice storm for the upstate and even gets freezing temps into north ga before the main precip ends.

 

TT_TT_PN_078_0000.gifTT_TT_PN_084_0000.gif

TT_TT_PN_090_0000.gif

wow....that is about as pronounced of a wedge I think I have ever seen modeled for the upstate and ne ga

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  On 1/19/2016 at 7:46 PM, 27596WXNUT said:

Can someone clarify? Is the S/W onshore yet or does it come onshore tonight? Just trying to learn here.

The s/w energy won't be on shore until tonight around 00z from what I have seen.
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One trend I do see in the next day on the models is the leading wave moving across the lakes is trending south - that storm is what builds our HP overhead as it moves into 50/50 position.  I think this is part of the reason why our storm is digging farther south as well.

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  On 1/19/2016 at 7:55 PM, burgertime said:

EPS isn't quite as far south as the OP...still a BIG CAD signature there and low is bombing off the coast. 

 

It's a mean so it balloons the isobars more as you move further out, but the 850mb 0 line is dead on with the Euro operational.

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  On 1/19/2016 at 7:58 PM, burgertime said:

EPS snowfall maps on SV is 6 - 8 for CLT, 2 - 4 for GSP and then 10+ for WS, 6 - 8 for RDU and 15+ for GSO. 

 

:lmao:

 

I am only out to hr 72 on WB, but you can see the ULL digging further south and the ridge out west is a little taller.  You can tell it was going to be a better run (as it evidently was).

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  On 1/19/2016 at 7:57 PM, Wow said:

One trend I do see in the next day on the models is the leading wave moving across the lakes is trending south - that storm is what builds our HP overhead as it moves into 50/50 position.  I think this is part of the reason why our storm is digging farther south as well.

agreed!!  I think the GFS is screwing that up and jumping to much energy out ahead.  

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