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December Medium/Long Range Discussion


yoda
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  On 12/10/2020 at 11:54 PM, CAPE said:

Unless one simply likes hand wringing over details of a singular op run 5+ days out, love this panel and live for the next model cycle.

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Which one would you personally put your money on for down this way based on model guidance. I was more or less transferring all my eggs to Wednesday but Euro and GFS keeps me interested for Monday.

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  On 12/10/2020 at 11:50 PM, osfan24 said:

Aren't most of our big storms Miller B's anyway? Miller A's seem like unicorns these days.

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That can get way in the weeds because people argue over the definitions.  Is a miller B any storm that goes up west of the apps and jumps?  Only northern stream systems that jump and develop. Some mix?  Where does it go from A to B?  Most storm jump somewhere. Actually all storms jump since pressure centers are always redeveloping. But those jumps are often minor.  So when a gulf system gets into GA then jumps to off the Carolina coast we don’t say anything. When a storm jumps from Ohio to off VA that’s a bit more significant so it gets a different classification.  I don’t really like to waste time arguing about definitions and terminology.  So it just depends.  Rule is the more STJ dominant the better.  Further south the transfer and or phase the better!  Closer to a miller A the better.  But a pure miller A is rare.  And even those rules aren’t 100%  March 2013 we had a northern stream handoff that jumped so far south due to an Uber block that we got screwed and the heavier banding set up by Richmond.  Everything is a matter of degrees.  Everything depends on lots of variables.  Even the perfect track depends on how mature and deep the low is and the thermal profile around it.  

 

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  On 12/11/2020 at 12:44 AM, WinterWxLuvr said:

For me, I see very little chance that a low near Atlanta can somehow slide straight out to sea. At least I think we’d get precip with that.

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Tend to agree. Probably a glancing blow but something. That precip map shows you need heavier precip and dynamical cooling to get some snow. Timing of the shortwave relative to the cold air is also key. Want things a little slower. Seems HH euro did that.

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  On 12/11/2020 at 12:37 AM, Weather Will said:

WB EURO hour 90.  Seems a little slower.  That has to affect things later in the week...

DA53503F-4DF8-4D99-8B7F-1A76F0D3E882.png

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Depends. There wasn’t much correlation on the GEFS members between the two systems. I checked. There is enough separation (as of now). I think the mid week threat is more dependent on the high/confluence and the interaction of the STJ with the NS. 

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  On 12/10/2020 at 11:54 PM, CAPE said:

Unless one simply likes hand wringing over details of a singular op run 5+ days out, love this panel and live for the next model cycle.

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   again     very much like  12z  euro//eps 

 

 again     east coast  storms   EURO  leading    with consistency

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