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January 30-February 2nd Wave Train


Chicago Storm

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  On 1/27/2014 at 6:22 PM, Hoosier said:

12z Euro is a bit slower.  Surface low is in the IN/OH area at 120 hours whereas the 00z run had it east of Detroit at 132.

 

Looks that way. Good enough 850 temp gradient at 120 hours. +5C here...and -5C cutting through Chicago.

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  On 1/27/2014 at 6:35 PM, Thundersnow12 said:

Elongated 1000mb low over Indy 12z Saturday but between advection snows early on and the decent defo band, it's solid.

 

the baroclinic zone and baby SE ridge has me leaning pretty hard towards more amplified models at this stage...especially if we see a slowing trend.

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  On 1/27/2014 at 6:36 PM, A-L-E-K said:

the baroclinic zone and baby SE ridge has me leaning pretty hard towards more amplified models at this stage...especially if we see a slowing trend.

 

The fact that the PNA should be leaning negative by the end of the week and certainly the weekend doesn't hurt that speculation.  I am leaning towards another near-miss and nice Chicago hit on this one.

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The differences wrt shortwave handling on the backside of that trough are pretty substantial. GFS in particular handles the energy completely differently than the GGEM/ECMWF do at this point. Probably will end up with something in the middle meaning MDW to DTW get the best snow. 

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I think we're going to have some issues here even if the more amped solutions verify.  2 days of moderating temps is not enough to efficiently warm cold surfaces and would expect something similar (icing with 2m temps well above freezing) to what happened farther north a couple weeks ago. 

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  On 1/27/2014 at 7:16 PM, Hoosier said:

I think we're going to have some issues here even if the more amped solutions verify.  2 days of moderating temps is not enough to efficiently warm cold surfaces and would expect something similar (icing with 2m temps well above freezing) to what happened farther north a couple weeks ago. 

 

 

i mentioned the same thing in the med range thread earlier today.

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  On 1/27/2014 at 7:25 PM, Gilbertfly said:

I guess nearly all 12Z guidance says I was an idiot for thinking the baro zone will set up further south and keep the "waves" progressive and south (for this thread's systems)....

 

should I claim horrible call now?  or wait for another few runs of guidance?  :axe:

 

 

Hey, you have the GFS on your side but hard to think it won't start baby stepping north sometime soon.

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  On 1/27/2014 at 7:25 PM, Gilbertfly said:

I guess nearly all 12Z guidance says I was an idiot for thinking the baro zone will set up further south and keep the "waves" progressive and south (for this thread's systems)....

 

should I claim horrible call now?  or wait for another few runs of guidance?  :axe:

Go big or go home. 

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